The Contra Costa Board of Supervisors appoints Dr. Grant Colfax as the Director of Contra Costa Health, effective Tuesday, Aug. 19, 2025. Colfax served as the Director of Health for the City and County of San Francisco and he replaces Dr. Ori Tzvieli, interim director and will remain Contra Costa County’s Health Officer. He previously served as Director of the White House Office of National AIDS Policy during the Obama administration and as Director of HIV Prevention and Research at the San Francisco Department of Public Health. (Contra Costa County via Bay City News)

The Contra Costa County Board of Supervisors has appointed San Francisco’s former public health director to oversee its own county health department.

Dr. Grant Colfax, who stepped down in January after nearly six years in his role as San Francisco’s leading health official, was appointed as the director of Contra Costa Health effective Aug. 19, county officials said.

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Dan McMenamin is the managing editor at Bay City News, directing daily news coverage of the 12-county greater Bay Area. He has worked for BCN since 2008 and has been managing editor since 2014 after previously serving as BCN’s San Francisco bureau reporter. A UC Davis graduate, he came to BCN after working for a newspaper and nonprofit in the Davis area. He handles staffing, including coaching of our interns, day-to-day coverage decisions and management of the newswire.