TIMOTHY C. SIMMONS, M.D.
Dr. Simmons entered private practice in Los Angeles in 1980. He has been appointed to numerous positions including Chief of Medicine and Chief of Staff at Robert F. Kennedy Hospital. Since 1987, Dr. Simmons has conducted over 80 clinical trials for various pharmaceutical companies. He is a Clinical Instructor in Gastroenterology and a Clinical Assistant Professor of Medicine at the UCLA-Wadsworth VA Hospital Center. Dr. Simmons is one of the original founding physicians of West Gastroenterology Medical Group

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ADEBAMBO OJURI, M.D.
Dr. Ojuri entered private practice with West Gastronenterology Medical Group in 1993. Dr. Ojuri has served as Chairman of the Department of Internal Medicine at Lincoln Hospital in Los Angeles and was previously an Associate Clinical Professor of Medicine at the UCLA School of Medicine. Dr. Ojuri is a member of the American Gastroenterology Association, American Medical Association, American Society of Gastroenterology Endoscopy, and National Medical Association.

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FRED GLETTEN, M.D.
Dr. Gletten entered private practice with West Gastroenterology Medical Group in 1982.  He has held various positions as Chief of Gastroenterology Lab at Brotman Memorial Hospital and Los Angeles Doctors Hospital, and he was appointed Chief of Staff for Los Angeles Doctors Hospital from 1985-1986 and 1987-1988.  Since 1988, Dr. Gletten has conducted over 50 clinical trials for various pharmaceutical companies.  Dr. Gletten currently serves on the faculty as an Assistant Clinical Professor of Medicine at UCLA School of Medicine’s Department of Internal Medicine and Charles Drew Medical School.

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ROBERT FAN, M.D.
Dr. Fan is a graduate of the Medical College of Ohio where he received his M.D. and a Ph.D. in Biochemistry and Molecular Biology in 1998.  He completed his internship and residency in internal medicine at UCLA Greater Los Angeles Health Care System.  Dr. Fan completed his gastroenterology fellowship in 2004 at the Division of Digestive Diseases at UCLA. Dr. Fan has been with West Gastroenterology Medical Group since 2005.

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CYRIL ANYADIKE, M.D.
Dr. Anyadike received his M.D. from the Bowman Grey School of Medicine at Wake Forest University, North Carolina in 1996.  He completed his internship at the University of California, Davis-East Bay and his residency at Saginaw Cooperative Hospitals Inc. (SCHI) Department of Internal Medicine in association with Michigan State University in 1998 and 2002 respectively. He is currently an Assistant Professor in Gastroenterology at LAC-King Drew Medical Center.  Dr. Anyadike joined West Gastroenterology Medical Group in 2006.   

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MARIAN ROSENTHAL, M.D.
Dr. Marian Rosenthal is a graduate of Barnard College and New York University Medical School where she received her M.D. in 1967.  She completed her internship at Bellvue Hospital in New York.  In addition, she completed her residency at Bellvue Hospital and UCLA. Followed by a gastroenterology fellowship in 1971 at the UCLA/Wadsworth VA Hospital.  From 1971-2002, Dr. Rosenthal was on staff at the Kaiser Foundation Hospitals in Inglewood and West Los Angeles.  She is currently a retired per diem Gastroenterologist for the Kaiser Foundation Hospital, West Los Angeles.  From 1979 -1983, she was a member of the FDA Gastroenterology Drug Advisory Committee. She has held positions as Chairman of Regional Gastroenterology Committee for Southern California Permanente, Chief Physician of Gastroenterology Section for Kaiser West Los Angeles, and past President of the Southern California Society for Gastrointestinal Endoscopy (1986).  Dr. Rosenthal is currently an Assistant Clinical Professor for UCLA’s Department of Medicine, and has been an attending physician in Gastroenterology at Wadsworth VA Hospital since 1971.  Dr. Rosenthal became a Diplomat of the American Board of Internal Medicine in 1972 and a Diplomat of the American Board of Gastroenterology in 1975.  Dr. Rosentahl is a member of the Southern California Society for Gastrointestinal Endoscopy, Southern California Society for Gastroenterology, American Gastroenterological Association, and American Society of Gastrointestinal Endoscopy.  Dr. Rosenthal has been with West Gastroenterology Medical Group since March of 2004.  mrosenthal@westgastro.com

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ESMERELDA LAKE, NP, MSN
Esmerelda Lake completed her undergraduate degree in Nursing from the University of Southern California in 1997. She later completed the MSN program at the University of California, Los Angeles in 2001. She completed her internship at Little Company of Mary in 2001 prior to joining West Gastroenterology Medical Group in 2003.

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CHRISTHAM WINDROSS-WHITE, NP
Christham Windross-White received a Bachelor of Science in Nursing from California State University, Long Beach, in 1999. She later completed the RN/MSN and her Family Nurse Practitioner Certification at the University of California, Los Angeles, in 2001. After working as an intern for UCLA Cardiology and Kaiser Permanente, she joined West Gastroenterology Medical Group in February of 2002.

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