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 Robert B. Ash, M.D.
Dr. Ash joined Valley Radiotherapy Associates in 2007. He is a Canadian-trained radiation oncologist who is board-certified in both the United States and Canada. After completing his undergraduate medical training at Memorial University of Newfoundland, he completed his post-graduate training at Memorial University of Western Ontario. He was Associate Professor of Medicine at the University of Western Ontario as well as Chair of the Thoracic Multidisciplinary Team and Director of Undergraduate Medical Education for Oncology. Currently, he is Director of Radiation Oncology at St. Joseph Hospital, Orange. In addition to general radiation oncology, Dr Ash has an interest in thoracic malignancies as well as genitourinary malignancies. He is also trained in prostate brachytherapy..
 Tanuja A. Bhandari, M.D.
Tanuja A. Bhandari, MD joined Valley Radiotherapy Associates Medical Group in November, 2007 and practices at Vantage Radiation Oncology Treatment Centers in Riverside and San Bernardino, California. She received her Bachelor of Science degree in Biology from the University of California, Irvine followed by a Medical Degree from The American University in Coral Gables, Florida. She completed 2 years of post-graduate training in Internal Medicine at the Greater Baltimore Medical Center, Affiliate Hospital of Johns Hopkins University. She then completed her residency in Radiation Oncology at Allegheny General Hospital-Drexel University Program, which serves as the National Surgical Adjuvant Breast and Bowel Project (NSABP) Headquarters.
Dr. Bhandari is a member of the American Society for Therapeutic Radiology and Oncology, American Society of Clinical Oncology, and American Association for Women Radiologists. She has special interest in radiation therapy for breast, colorectal, and prostate cancer.
 Leslie
E. Botnick, M.D.
Dr. Leslie Botnick is a board certified Radiation Oncologist
practicing at Valley Radiation Oncology Center in Tarzana, CA. Dr.
Botnick is the Chief Executive Officer of Valley Radiotherapy
Associates Medical Group. He received a Bachelors of Arts Degree
from Brooklyn College followed by a Medical Degree from New York
Medical College. He interned at Metropolitan Hospital in New York
before serving his residency at the Harvard Joint Center for
Radiation Therapy in Boston. He later became Chief Resident at the
Joint Center. He was Medical Director of Radiation Oncology at the
Beth Israel Hospital in Boston. Dr. Botnick has written over 40
publications on Breast Cancer, Hodgkin's, Head and Neck Cancer and
Hematopoietic Stem Cell Repair. Dr. Botnick is currently associated
with several Health Systems throughout Los Angeles and Orange
Counties in California, including the nationally renowned John Wayne
Cancer Institute, as well as in Colorado and New Mexico. Dr.
Botnick is also listed in Who's Who of Doctors in America and
in Good Housekeeping magazine as a leading physician in the
treatment of Breast Cancer. Dr. Botnick is a regular participant on
the notably syndicated weekly radio show "The Group Room," a show
dedicated to the clinical and psychosocial support of cancer
patients. Areas of expertise include Breast, Prostate, Pancreatic
and Rectal Cancer as well as Hodgkins and Non-Hodgkins Lymphoma.
Other languages spoken: Hebrew
 Marc
I. Botnick, M.D.
Dr. Marc Botnick joined Valley Radiotherapy Associates in 2000
and is a board certified Radiation Oncologist practicing at
Providence St. Joseph Medical Center in Burbank, CA, and Valley
Radiation Oncology Center in Tarzana, CA. He received his Bachelor
of Arts Degree in Biology from the University of Pennsylvania
followed by a Medical Degree from the Hahnemann University School of
Medicine. He completed his Radiation Oncology residency training at
the Memorial Sloan Kettering Cancer Center in New York where he
dedicated an entire year towards advanced brachytherapy training.
He is experienced at HDR and permanent seed prostate implants in
addition to implants for Head and Neck, Gynecological, Lung and soft
tissue malignancies. He serves as one of the primary
brachytherapists of Valley Radiotherapy Associates Medical Group,
performing prostate seed implants at several facilities including
Providence St. Joseph Medical Center, Providence Holy Cross Medical
Center, St. John's Health Center and the Little Company of Mary
Hospital in Torrance. Areas of expertise include Prostate, Head and
Neck, Pancreatic and Colorectal Cancer as well as High Dose
Radiation on Gynecological Cancers.
 Nancy A. Cersonsky, M.D.
Nancy A Cersonsky, MD joined Valley Radiotherapy Associates Medical Group in October, 2007 and is working as a Radiation Oncologist at Swedish Medical Center, Englewood, Colorado. She earned her Doctor of Medicine degree at the University of Colorado, Denver. She completed her internship at Saint Barnabas Medical Center in Livingston, NJ, an affiliate of Mt. Sinai Medical center in NYC. Her Radiation Oncology Residence was completed at University of Cincinnati Hospital in Ohio. She is a member of the American Society for Therapeutic Radiology and Oncology, American Medical Association, American Society for Clinical Oncology; Dr. Cersonsky’s treatment specialties include Stereotactic Radiosurgery for brain and thoracic malignancies and Prostate Brachytherapy. She has a special interest in radiation therapy for CNS, breast, gastrointestinal and skin malignancies.
 Helen
K. Chen, M.D.
Dr. Helen Chen joined Valley Radiotherapy Associates in 2001 and
is a board certified Radiation Oncologist practicing at Good
Samaritan Hospital in Los Angeles, CA, and Valley Radiotherapy
Medical office in Monterey Park. She grew up in the San Gabriel
Valley and is trilingual in Chinese, Spanish and English. She was a
Kodak Scholar and honored Phi Beta Kappa at Stanford University,
where she received her B.S. with Distinction. She earned her M.D.
from the University of California, San Francisco and completed a
medicine internship at Huntington Memorial Hospital in Pasadena.
Her residency in Radiation Oncology at the University of California,
Irvine allowed her to gain expertise in interstitial brachytherapy.
She was a hyperthermia research fellow at the City of Hope National
Medical Center. She practiced for one year in the San Gabriel
Valley prior to coming to the Little Company of Mary Hospital Cancer
Center in Torrance, California in 1995. Her interests include
breast cancer, optimizing 3-dimensional conformal radiation
techniques and community teaching and outreach in oncology. Areas
of expertise include Breast and Lung Cancer, Gynecological Cancers,
Brachytherapy, and Palliative Care.
Other languages spoken: Chinese, Spanish
 Marshall
Davis, M.D.
Dr. Marshall Davis joined Valley Radiotherapy Associates in
2001and is a board certified Radiation Oncologist. Dr. Davis is the
Medical Director at Swedish Medical Center in Englewood, CO. He was
the former Director of Radiation Oncology for the Little Company of
Mary Hospital Cancer Center in Torrance, California and was also the
director of Radiosurgery at the Newport Diagnostic Center in Newport
Beach, California. He received his Bachelor of Arts Degree from
Nebraska Wesleyan University and received his Medical Degree from
the University of Nebraska Medical School. He interned at Denver
Presbyterian Medical Center and completed his Radiation Oncology
residency at the University of California, San Francisco Medical
Center under the direction of Doctors Steven Leibel and David
Larson. Dr. Davis has been previously involved in the development of
the “Cyberknife”, a robotic stereotactic radiation delivery system.
The first Beta test site, located at Newport Diagnostic Center
undertook initial phase I (feasibility) data collection treating
intracranial targets. Dr. Davis later served as principal
investigator for their Institutional Review Board and was involved
in developing/implementing investigational protocols for performance
of body radiosurgery using the Cyberknife, treating prostate cancer
and spinal tumors. Areas of expertise include gynecologic cancer,
head and neck cancer and stereotactic radiosurgery.
 Dechen
Dolkar, M.D.
Dr. Dechen Dolkar joined Valley Radiotherapy Associates in 1999
and is a board certified Radiation Oncologist practicing at St. Jude
Medical Center in Fullerton, CA. She graduated from the University
of Southern California with a Bachelor of Science degree in
Biomedical Engineering. She also received her MD degree from the
University of Southern California. After interning in medicine at
White Memorial Medical Center, she completed her radiation oncology
residency at UCLA. In addition to general Radiation Oncology
practice, areas of expertise include IMRT, Intravascular
Brachytherapy, and Head and Neck Cancer.
 Nancy
A. Ellerbroek, M.D.,F.A.C.R.
Dr. Nancy Ellerbroek joined Valley Radiotherapy Associates in
1993 and is a board certified Radiation Oncologist. Dr. Ellerbroek
is the Medical Director at Providence Holy Cross Medical Center in
Mission Hills, CA. She has a Bachelor of Arts degree in physics, as
well as an M.D. degree from the University of California at Los
Angeles. After she completed her residency in Radiation Oncology at
UCLA in 1987, she spent three years on the faculty of the University
of Texas, M.D. Anderson Cancer Center in Houston, where she achieved
the title of Assistant Professor of Radiotherapy. She spent the
following three years at Loma Linda University Medical Center, where
she achieved the title of Associate Professor of Radiation Medicine.
She performed research and teaching at each of those facilities,
with special interest in the treatment of breast, head and neck, and
lung cancer. Dr. Ellerbroek is Past President of the Southern
California Radiation Oncology Society, and is currently President of
District 17 of the Los Angeles County Medical Association. She is
the current Vice President of the American Association of Women
Radiologists. She serves as a Counselor to the Radiological Society of North America, and on the Editorial
Board of the journal Radiology. Areas of expertise include
the treatment of patients with Breast and Prostate cancers.
 Ramez
Farah, M.D.
Dr. Farah joined Valley Radiotherapy Associates
Medical Group in April 2004 and is the Medical Director at Vantage
Radiation Oncology Center in Riverside. He is Board Certified in
Radiation Oncology. He completed his residency at The University of
Chicago under the chairmanship of Dr. Ralph Weichselbaum. He
received special training with world renowned, pioneers Radiation
Oncologists like Professor Bernard Pierquin, Professor Brigit Van
Derwerf Messing, Professor Sam Hellman, and Dr. Lionel Cohen.
He served as an Assistant Professor at the University of Chicago for
five years during which he was active in clinical research and
published a number of articles on Hodgkin’s Disease, Lymphoma, and
Prostate Cancer. His areas of expertise include IMRT, HDR
brachytherapy for GYN malignancies, and prostate seed implants.
Other languages spoken: French and Arabic
 Afshin
Forouzannia, M.D.
Dr. Afshin Forouzannia joined Valley Radiotherapy Associates in
2003 and is a board certified Radiation Oncologist practicing at
Providence Holy Cross Medical Center in Mission Hills, CA. He
received his B.A. from Michigan State University in 1994 and
completed medical school at Wayne State University School of
Medicine in Michigan in 1998. He did a one-year internship at St.
Joseph’s Mercy Hospital in Ann Arbor, Michigan before beginning his
residency at the University of Wisconsin. For the final two years of
his residency, Dr. Forouzannia acted as chief resident and has been
an instructor for several medical school courses at the University
of Wisconsin. He has had extensive experience with breast
brachytherapy during his residency and has published several
abstracts on the subject. Dr. Forouzannia’s areas of clinical
expertise include Brachytherapy, Breast, GYN and Prostate.
Other languages spoken: Farsi (Persian)
 Garth
A. Green, M.D.
Dr. Garth Green joined Valley Radiotherapy Associates in 1999 and
is a board certified Radiation Oncologist. Dr. Green is the
Co-Medical Director at Little Company of Mary Hospital Cancer Center
in Torrance, CA and Medical Director of Little Company of Mary San
Pedro Hospital in San Pedro, CA. He graduated from the University of
California at Berkeley with a Bachelor of Arts degree in Classical
Greek. He received his M.D. from Tulane University School of
Medicine, and completed his residency training at the University of
Southern California. After serving as a fellow in radiation oncology
at the Fox Chase Cancer Center in Philadelphia, Pennsylvania, he
returned to the department of radiation oncology at the University
of Southern California School of Medicine as an Assistant
Professor. Areas of expertise include Central Nervous System
Tumors, as well as Gastro-intestinal, Head and Neck, and Prostate
Cancer.
 Judith A. Harrison, M.D.
Dr. Judith A. Harrison is a board certified Radiation Oncologist and practices at St. Joseph Hospital in Orange, CA and Children’s Hospital of Orange County.
Initially at Michigan State University, a dual BS degree in Mathematics/chemistry was completed in the Honors College Program. Luckily an AEC Fellowship allowed completion of a MS degree in Bioradiology at U.C. Berkley. The use of radiation in medicine fascinated my interest and I went on to obtain an M.D. at UC San Francisco and later was specialty trained in Radiation Oncology at UC Irvine. Over the last 35 years, I have been Director of Radiation Oncology at St. Joseph Hospital and Children’s Hospital of Orange County. I maintained a clinical position at UC Irvine Medical School and have been advanced to Clinical Professor. I am still excited by the technological advances in my field and look forward to patient care every day.
 Janet M. Hocko, M.D.
Janet Hocko, MD joined Valley Radiotherapy Associates Medical Group in December, 2006 and is the Medical Director at Vantage Radiation Oncology Therapy Center in Riverside. Dr. Hocko is board certified in Radiation Oncology. She earned her Doctor of Medicine degree at the University of California Irvine. She completed her residency and internship at Loma Linda University Medical Center and was an Assistant Professor there for many years.
She is a member of the American Society for Therapeutic Radiology and Oncology, American Medical Association, San Bernardino County Medical Society and Los Angeles Radiological Society. Dr. Hocko’s treatment specialties include brachytherapy for gynecological malignancies. She has a special interest in radiation therapy for breast, gastrointestinal and lung malignancies.
 Rex
Hoffman, M.D.
Dr. Rex Hoffman joined Valley Radiotherapy Associates Medical
Group in 2001 and is a board certified Radiation Oncologist
practicing at Providence St. Joseph Medical Center in Burbank, CA.
He received a Bachelor of Arts in Economics at the University of
California, San Diego. He attended medical school at Tulane
University in New Orleans, Louisiana where he received his medical
degree. He completed his internship at Good Samaritan Regional
Medical Center in Phoenix, Arizona, before heading to the University
of California, San Francisco for a residency in Radiation Oncology.
During his four years at the University of California, San
Francisco, he co-authored an article on Managing Lung Cancer Brain
Metastases with Radiosurgery as well as papers on the management of
anal, penile and urethral cancer. Two papers, one on gastric cancer
and a second on nasopharyngeal cancer brachytherapy are in progress.
His interests include the management of brain tumors, with
conventional external beam radiation therapy and radiosurgery, as
well as gastro-intestinal cancers.
 Linas
J. Kazlauskas, M.D.
Dr. Linas Kazlauskas joined Valley Radiotherapy Associates in
2001 and is a board certified Radiation Oncologist. Dr. Kazlauskas
practices at Vantage Radiation Oncology Centers in San Bernardino
and Riverside, CA. He received a Bachelor of Science degree in
Physics from Loyola University of Chicago, and his Doctor of
Medicine degree from Rush Medical College. Dr. Kazlauskas completed
his internship and residency in Radiation Oncology at
Rush-Presbyterian-St. Luke’s Medical Center in Chicago. Areas of
expertise include Prostate, Lung, Skin and Breast Cancer.
Other languages spoken: Lithuanian
 Young S. Lee, MD
Dr. Young Lee joined Valley Radiotherapy Associates in 2006 and he practices at our two Orange County facilities, St. Jude Medical Center and St. Joseph of Orange Hospital. He received a B.S. in Engineering and Applied Science from Caltech and his M.D. from UCLA School of Medicine. After completing his residency at University of California, Irvine, in 1992, he worked at City of Hope as a staff Radiation Oncologist. He developed in-house multi-disciplinary clinical trial for locally advanced Head and Neck cancer patients at City of Hope. He was the primary investigator for a phase II clinical trial using electrochemical therapy before he joined the staff at St. Joseph Hospital in Orange in 1996. Dr. Lee’s areas of clinical expertise include prostate cancer, head and neck cancer and brachytherapy. He serves as the co-director of the Prostate Brachytherapy Program at St. Joseph Hospital. Dr. Lee is an avid soccer fan, player and a coach. He is fluent in Korean.
 Bernard S. Lewinsky, M.D., F.A.C.R.
Dr. Bernard Lewinsky received his board certification in Radiation Oncology in 1974. His undergraduate years were at UC Berkeley where he received a Bachelor's degree in Biology. He received a Master's Degree in Biology from the University of Oregon in 1965. His Medical training was at University of California, Irvine, receiving his medical degree in 1969. After a year's internship at LA County-USC, he started his training at Saroni Tumor Institute in San Francisco. He spent a year of Fellowship at the Royal Marsden Hospital, London, England, and then completed his training at the West Coast Cancer Foundation, San Francisco in 1974. After two years as Chief, Radiation Therapy Service at Letterman Army Medical Center as his Military duty in the Army, he came to Los Angeles and began his practice at Western Tumor Medical Group in 1977. Dr. Lewinsky has been at WTMG since that time and became its President and owner in 1994. He has received the Medal of Commendation for his services in the Army and has also been recognized as a Fellow of the American College of Radiology.
Dr. Lewinsky has developed special interest in Breast and Prostate cancers and has authored and co-authored many peer-reviewed articles in the Medical literature and has also written several chapters in Medical textbooks. His main interest outside of the Medical field is Nature Photography. He believes there is a healing aspect and connection between nature photography and the human body and mind. Other languages spoken: German and Spanish.
 James M. Mason, M.D.
Dr. James Mason is a board certified Radiation Oncologist practicing at the Vantage Radiation Oncology Centers at Wildomar and Redhawk. He received both his BS and MD degrees from Wayne State University in Detroit, Michigan. Following this, he completed an internship in internal medicine and a residency in radiation oncology at Wayne State University. Subsequently, he graduated from Harvard University’s School of Public Health with an MPH in 2004.
Prior to relocating to Southern California, Dr. Mason was a staff physician for 6 years at the Cleveland Clinic Foundation in Cleveland, Ohio. Dr. Mason has published articles on breast and lung cancer. His areas of expertise include HDR brachytherapy, LDR brachytherapy, intensity modulated radiation therapy, prostate brachytherapy, stereotactic radiosurgery, 3D conformal radiation therapy, and mammosite®.
 Mary
Lou Ozohan, M.D., F.A.C.R.
Dr. Mary Lou Ozohan joined Valley Radiotherapy Associates in 1991
and is a board certified Radiation Oncologist. Dr. Ozohan is the
Medical Director at Valley Radiation Oncology Center in Tarzana, CA.
She graduated from the University of Manitoba College of Medicine
before interning and serving her residency at the LAC-USC Medical
Center. Prior to joining the Medical Group, she was Director of
Radiation Therapy for the Radiation Oncology Medical Clinic of
Tarzana. She is a member of the Board of Directors of the Los
Angeles County Medical Association and the recipient of the Life
Achievement Award of the Hermanos en La Lucha Contra el Cancer
League. Dr. Ozohan was awarded a Fellowship by the American College
of Radiology in September 1998. Areas of expertise include Breast
and Gynecological Malignancies as well as High Dose Radiation for
Gynecological Cancers and Skin Cancer.
Other languages spoken: Spanish, Ukrainian, and Russian
 Terence
J. Roberts, M.D.
Dr. Terence Roberts joined Valley Radiotherapy Associates in 2003
and is a board certified Radiation Oncologist practicing at Vantage
Radiation Oncology Center in Wildomar, CA. He received his B.A. in
1984 and his medical degree in 1987 from Johns Hopkins University.
He completed an internship in Internal Medicine at the University of
Arkansas before returning to Johns Hopkins for his residency. After
residency, he was an Assistant Professor in the Department of
Radiation Oncology at the University of Arizona from 1991 to 1993
and then entered private practice in Fort Smith, Arkansas. From 1995
through 1998, Dr. Roberts attended law school at Stanford University
while continuing to practice Radiation Oncology part-time. He
practiced corporate law for four years before spending a year as a
clinical fellow at the University of California San Francisco.
During his fellowship, Dr. Roberts focused on Brachytherapy and
Intensity Modulated Radiation Therapy. His clinical areas of
expertise include cancers of the head and neck and central nervous
and genitourinary systems.
 Brian Ronson, M.D.
Dr. Brian Ronson joined Valley Radiotherapy Associates Medical Group in 2005 and is a board certified Radiation Oncologist practicing at Vantage Radiation Oncology Centers in Wildomar and Temecula, California. He received a B.A. in Biology from Johns Hopkins University and his M.D. degree from University of Maryland. He completed his residency at Loma Linda University Medical Center, where in his fourth year; he focused on brachytherapy, gaining additional hands-on experience through the Seattle Prostate Institute and its affiliates and Long Beach Memorial Medical Center.
He has published articles on cancer gene therapy, pituitary adenomas, non-hodgkin’s lymphoma and prostate cancer. He has also authored a provisional patent that addresses the use of electromagnetic radiation to focus the deposition and action of anti-cancer drugs. Dr. Ronson’s areas of clinical expertise include prostate cancer and brachytherapy, brain tumors and lymphoma.
Other languages spoken: Spanish
 Christopher
M. Rose, M.D., F.A.C.R.
Dr. Christopher Rose is a board certified Radiation Oncologist
practicing at Providence St. Joseph’s Medical Center in Burbank,
CA. Dr. Rose is both the Technical and Associate Director of Valley
Radiotherapy Associates Medical Group. He received his B.S. from the
Massachusetts Institute of Technology and M.D. from Harvard Medical
School. Upon graduation, he served an internship and residency in
Internal Medicine at the Beth Israel Hospital in Boston, followed by
a residency in Radiation Oncology at the Harvard Joint Center for
Radiation Therapy. Dr. Rose was Visiting Clinical Scientist at the
Institute for Cancer Research, Royal Marsden Hospital, University of
London in Great Britain. He was an Assistant Professor of Radiation
Oncology at Harvard Medical School. He is currently an Associate
Clinical Professor of Radiation Oncology at the UCLA School of
Medicine. Dr. Rose is past-President of the American Society of
Therapeutic Radiology and Oncology, the professional society of
Radiation Oncology. He is Past President of the Council of
Affiliated Regional Radiation Oncology Societies of the American
College of Radiology, Past President of the California Radiation
Oncology Society, and Counselor of the American College of
Radiology. He is the Expert Physician reviewer for radiation
oncology for Transamerica Occidental Medicare Administration and
advisor to the Health Care Financing Agency Clinical Practice
Expense Panel. Dr. Rose has published more than 50 articles on the
treatment of Breast Cancer, Head and Neck Cancer and physico-chemical
methods of radiation sensitization. He is listed in Best Doctors
in America. Areas of expertise include Prostate, Breast, Skin,
Rectal, Esophageal, and Lung Cancer as well as Bone Metastases.
 Maira E. Simental, M.D.
Dr. Maira Simental joined Valley Radiotherapy Associates in 2005. Prior to her position at St. Bernardine Medical Center she was Assistant Professor of Radiation Oncology at Loma Linda University Medical Center in Loma Linda, California. She earned a Bachelor of Arts degree in Biology at La Sierra University in Riverside, and a Doctor of Medicine degree at Loma Linda University School of Medicine. Dr. Simental completed her internship in Family Medicine at the San Bernardino County Medical Center and her residency in Therapeutic Radiology at Loma Linda University Medical Center. She received her board certification from the American Board of Radiology in therapeutic radiology. Dr. Simental specializes in the treatment of gynecologic, breast, lung, brain, head and neck cancers. She is a member of the American Society for Therapeutic Radiology and Oncology, The American College of Radiation Oncology and the California Medical Association.
Languages spoken: English, Spanish
 Paul Y. Song, M.D.
Dr. Paul Y. Song joined Valley Radiotherapy Associates Medical Group in 2007 and practices at Vantage West Hills Radiation Therapy Center in West Hills, CA. He graduated with honors from the University of Chicago and received his Medical degree from George Washington University. He completed his residency in radiation oncology at the University of Chicago in 1995 where he also served as chief resident and was honored as an ASTRO research fellow for 1995-96 by the American Society for Therapeutic Radiology and Oncology pursuing research in genetic radiotherapy. Dr. Song was also a visiting brachytherapy fellow at the Institut Gustave Roussy in Villejuif, France. He is board-certified.
Dr. Song was an attending physician in the department of radiation oncology at Inova Fairfax Hospital from 1996-2003. In 2003 he became an attending staff physician in the Dept. of radiation oncology and co-chief of the brachytherapy service at the Center for Prostate Disease Research at Walter Reed Army Medical Center. He was named one of the top doctors in Washington, D.C. by Washingtonian Magazine and Consumer Checkbook in 2002 and 2005.
Most recently, Dr. Song was an attending physician and clinical instructor at the Little Company of Mary/University of Chicago Cancer center in Evergreen Park, IL.
Dr. Song has established very successful HDR and prostate seed brachytherapy, stereotactic radiosurgery, and IMRT programs de novo and has published several articles on the treatment of prostate cancer and brain tumors.
 Ronald
W. Thompson, M.D., F.A.C.R.
Dr. Ronald Thompson joined Valley Radiotherapy in 2002 and is a
board certified Radiation Oncologist practicing at St. John’s Health
Center in Santa Monica, CA. He received his BS from the University
of San Francisco in 1960. He attended medical school at Stanford
University, and completed his Internship at the University of
Oregon. Dr. Thompson completed two residencies, the first in
General Surgery at the Santa Clara Valley Medical Center in San
Jose, California and the second in Radiation Therapy at Stanford
Medical Center in Palo Alto, California. Dr. Thompson also spent 6
years in the U.S. Army Reserve as a Captain in the Medical Corps
from 1966-1972. From 1973 to 2002, he was the Chairman of the
Department of Radiation Oncology at Cedars Sinai Comprehensive
Cancer Center, and in 1981, he was named a Fellow by the American
College of Radiology. Dr. Thompson also holds an adjunct
professorship at University of California, Los Angeles. Dr.
Thompson has published extensively on Lymphomas, Radiosurgery,
Breast Cancer and Brachytherapy. His clinical areas of expertise
include cancers of the prostate, breast, skin and head & neck
cancers.
 Tara A. Washington, M.D.
Dr. Tara Washington is a board certified Radiation Oncologist practicing at the Vantage Radiation Oncology Centers in Wildomar and Temecula, California. She received her Bachelor of Science Degree from the Massachusetts Institute of Technology and her Medical Degree from the University of Michigan Medical School. She completed her residency training in Radiation Oncology at the Loyola University Medical Center. Subsequently, she joined the Wayne State University School of Medicine Radiation Oncology Department which is now affiliated with the Karmanos Cancer Institute.
Dr. Washington served as a key member of several Multidisciplinary teams including those focused on Breast, Gastrointestinal and Central Nervous System Cancers. She has specialized training and experience in the use of Partial Breast Irradiation and Gamma Knife Radiosurgery. Dr. Washington has also been an invited speaker for multiple professional and community groups as well as local media outlets on topics ranging from Contemporary Issues in the Management of Localized Breast Cancer to Current Recommendations for Cancer Screening.
 Robert
C. Wollman, M.D.
Dr. Robert Wollman is the Medical Director of the Department of Radiaology and Chairman of the Cancer Committee at St John's Health Center. His areas of expertise include prostate, bladder, breast, brain, melanoma, lung, gastrointestinal, head & neck cancers, as well as IMRT/IGRT (Intensity Modulated/Image Guided Radiation Therapy). He has lectured widely on prostate cancer, skin cancer and head & neck cancer. Dr. Wollman's publications include articles on the outcome of radiation for prostate cancer, the hormonal regulation of breast cancer, as well as chanpters in the text book Cancer Medicine.
Dr. Wollman graduated from the State University of New York at Binghamton with a Bachelor of Arts Degree in Biology and he received his Medical Degree from New York University School of Medicine. His internship was spent at Columbia-Presbyterian Medical Center in New York and his residency was completed at Memorial Sloan-Kettering Cancer Center in New York, where he served as Chief Resident in Radiation Oncology.
 Henry Yampolsky, M.D.
Dr. Henry Yampolsky joined Valley Radiotherapy Associates Medical Group in 2007 and is a board certified Radiation Oncologist practicing at The Center for Radiation Therapy of Beverly Hills and Vantage Radiation Oncology Center in Tarzana. He completed his Radiation Oncology specialty training at the University of Southern California/Norris Cancer Center and LAC+USC Medical Center. While at USC, Dr. Yampolsky acquired broad clinical expertise in the treatment of a wide range of cancers, as well as extensive experience with intensity modulated radiation therapy (IMRT), stereotactic radiotherapy and gynecologic brachytherapy. In addition, Dr. Yampolsky has designed and participated in several clinical trials investigating novel cancer treatments. He has presented his research in lymphoma/leukemia and in radiation treatment planning techniques at several scientific meetings.
Dr. Yampolsky is one of only a few Russian-speaking radiation oncologists in Southern California. He grew up in the former Soviet Union where he studied computer science at one of the most prestigious universities in Moscow. After immigrating to the United States in 1992, Dr. Yampolsky graduated from the University of California, Los Angeles with a B.S. in Biochemistry. He received his M.D. degree from the University of Southern California. His areas of interest are image guided radiation therapy (IGRT) and stereotactic radiosurgery (SRS).
 Robert P. Zimmerman, M.D.
Dr. Robert Zimmerman is a Cum Laude graduate of the University of California, Los Angeles, where he earned his Bachelor of Science degree in biology. He graduated from the UCLA School of Medicine where he was selected for membership in the honorary medical society, Alpha Omega Alpha. He served his medical internship at UCLA's San Fernando Valley Program at the Olive View Medical Center and the VA Sepulveda Medical Center in California. Dr. Zimmerman completed his radiation oncology residency at the UCLA Department of Radiation Oncology in Los Angeles.
Dr. Zimmerman has done extensive research in cancer treatment, and was the recipient of an American Cancer Society Clinical Oncology Fellowship and a RSNA Roentgen Resident/Fellow Research Award. His scientific research work has resulted in numerous publications and presentations pertaining to radiation oncology. Dr. Zimmerman has served as Assistant Professor of Radiation Oncology at the Texas A&M University College of Medicine. He is a member of the American Society for Therapeutic Radiology and Oncology, the American College of Radiation Oncology and is Board Certified in Radiation Oncology by the American Board of Radiology. Dr. Zimmerman has had extensive experience with HDR implants for GYN cancer and Prostate Brachytherapy with permanent seed implants as well being an early adopter of CT guided IMRT using the Tomotherapy Hi-Art system. He is bilingual in English and Spanish. |