925-543-0140
Medical Anesthesia Consultants
Directors of Gastrointestinal Anesthesia

Sarah Vankova, MD and Paul Pabst, MD

Anesthesia Leaders

San Ramon Regional Medical Center and ValleyCare Medical Center
Andrew Knight, MD, Kenneth Wong, MD, Allison Duffy, MD and Howard Tsuchiya, MD

Haywon Lieh, M.D.

Medical Director
Aspen Surgery Center

Kenneth Wong

Site Director, San Ramon Regional Medical Center

Howard Tsuchiya, M.D.

Department Chair, ValleyCare Medical Center

Andrew Knight, M.D.

Medical Director, ValleyCare Medical Center

Allison Duffy, M.D.
Ryan Green, M.D. Site Director, Walnut Creek Endoscopy Center
Ryan Green, M.D.

Site Director at Walnut Creek Endoscopy Center

Ray Engstrom, M.D. Medical Director Cardiac Services at San Ramon Regional Medical Center and ValleyCare Medical Center
Ray Engstrom, M.D.

Medical Director
Cardiac Services at San Ramon Regional Medical Center and ValleyCare Medical Center

Haywon Lieh, M.D. Medical Director Aspen Surgery Center
Haywon Lieh, M.D.

Medical Director at Aspen Surgery Center