Home › Top 4 Obstetrician-gynecologist in Brentwood, California Find best Obstetrician-gynecologist in Brentwood, California, with all necessary contact information, including addresses, phone numbers, working hours, map locations, and website links. Obstetrics-Gynecology: Sutter East Bay Medical Foundation: Brentwood US, Brentwood, CA 94513350 John Muir Pkwy Muir OBGYN Medical Group Inc. US, Brentwood, CA 94513350 John Muir Pkwy Dr. Nadine Hanna US, Brentwood, CA 94513350 John Muir Pkwy # 205 Manita Nat US, Brentwood, CA 945132400 Balfour Rd Ste 230