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Medical Staff Administration

For physicians and allied health professionals wishing to apply for Medical Staff or Allied Health Professional Membership, please click here to access MD App and request an account. You will be notified by email regarding your password and instructions to complete the on-line application. If you have any questions, please call the Medical Staff Office at 909-580-3341. Thank you.

Medical Staff Leadership

John H. Brill, M.D.John H. Brill, M.D.
Chief Medical Officer

Mark Comunale
Carol Lee, M.D.
Designated Institutional Official


David C. Ahamba, M.D.
Ambulatory Services

Kambiz RaoufiKambiz Raoufi, M.D.
Medicine Services

Mark Comunale
Steven Barr, M.D.
Operative Services/Patient Safety Officer

Dev Gnanadev
Dev GnanaDev, M.D.
Surgery

Guillermo Valenzuela
Guillermo
Valenzuela, M.D.

Surgical Services

Medical Staff Officers

placeholder imageHyung-Suk "Tommy" Lee, M.D.
President

David SeiglerDavid Seigler, M.D.
President-Elect

placeholder image
Steven Barr, M.D.
Secretary-Treasurer

Kambiz RaoufiKambiz Raoufi, M.D.
Immediate Past President

Application Link

Medical Staff Chairs

Mark Comunale
Steven Barr, M.D.
Anesthesia
Chair

David Seigler
David Seigler, M.D.
Behavioral Health
Chair

Rodney Rogers
Rodney Borger, M.D.
Emergency Medicine
Chair

David LanumDavid C. Ahamba, M.D.
Family Medicine
Chair

Kambiz RaoufiKambiz Raoufi, M.D.
Internal Medicine
Chair

Ha Le, M.D.
Ha Le, M.D.
Medical Imaging
Chair

Gail Hopkins, M.D.
Gail Hopkins, M.D.
Orthopedics
Chair

Carolyn LeachCarolyn Leach, M.D.
Laboratory Medicine
Chair

Dev Gnanadev
Dev GnanaDev, M.D.
Surgery
Chair

Guillermo Valenzuela
Guillermo
Valenzuela, M.D.

Women's Health
Chair

Webster Wong
Webster Wong, M.D.
Pediatrics
Chair