Director Team

Barbie Laderman-Jones
Director of Shelter Medicine
Liora Kahn

Director of Volunteer Services

Marcus Pon

Director of Learning and Development

David Sierra, DVM
Hospital Medical Director, Pacific Heights Campus

Dr. Sierra was born and raised in the small San Joaquin Valley town of Madera, CA.

After earning his undergraduate degree in Biological Sciences at UC Davis, he stayed in Davis for Veterinary School, graduating in 2004. He then completed a one-year internship in small animal medicine and surgery at Veterinary Medical and Surgical Group in Ventura…

Sara Taylor, RVT

Nursing Care Director – Mission Hospital

Jena Valdez, DVM
Director of Community Medicine

Dr Jena Valdez fell in love with the Bay Area as an undergraduate student at UC Berkeley. She is a graduate of Colorado State University’s College of Veterinary Medicine and Biomedical Sciences, and is an active volunteer with RAVS, or Rural Area Veterinary Services, a non-profit group which provides veterinary care to underserved areas. Her professional interests include feline medicine, pain management and acupuncture. She is a…

Nicolette Zarday, DVM, MPH
Hospital Medical Director, Mission Campus
Dr. Zarday grew up in New York City. After finishing her undergraduate degree at Brown University, she moved to the west coast and spent a year in San Francisco before enrolling in veterinary school at UC Davis…

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