Meet the Administration

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Dr. Grant Colfax

Grant Colfax, MD
Chief Executive Officer
925-957-5403

Office of The Director

Head Shot of Ori Tzvieli in lab coat

Ori Tzvieli, MD
Health Officer
925-957-5403

Lavonna Martin, MPH, MPA
Deputy Health Services Director
925-957-5403

Gilbert Salinas, MPA
Chief Equity Officer
925-957-2670

Depuity Director Rachael Birch

Rachael Birch
Deputy Health Services Director
925-957-5403

Head Shot of Matt Kaufmann

Matt Kaufmann
Deputy Health Services Director
925-957-5403

Dora Regalado
Personnel/Payroll Director
925-957-5250 | 925-957-5260 fax

David Culberson

David Culberson
CEO, Contra Costa Regional Medical Center & Health Centers
925-370-5100
925-370-5138 fax

Head Shot of Suzanne Tavano

Suzanne Tavano, PhD
Director, Behavioral Health Services
925-957-5169
925-957-5217 fax

Head Shot of Marshal Bennett

Marshall Bennett
Director of Emergency Medical Services
925-608-5454
925-228-2492 fax

Head Shot of Sefanit Mekuria

Sefanit Mekuria, MD, MPH
Director of Public Health
925-313-6712
925-313-6721 fax

Head Shot of Christy Saxton

Christy Saxton
Director, Health, Housing and Homeless Services
925-608-6700 main office
925-608-6741 fax

Nicole Heath
Director, Hazardous Materials
925-655-3200
925-646-2073 fax

Irene Lo, MD, FACS
CEO (interim), Contra Costa Health Plan
925-313-6000
925-313-6585 fax

Kristian Lucas, REHS
Director of Environmental Health
925-608-5500
925-608-5502 fax