OB-GYNs in California
Data updated monthly · Last refresh October 2026
5,103 Obstetrics & Gynecology providers practice in California, including 564 (11%) offering telehealth. The largest concentration is in Los Angeles. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.
5,103providers
564telehealth
Los Angelestop city
Obstetrics & Gynecology by city in California
Choose a city to see providers there.
Obstetrics & Gynecology providers in California
Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.
Dr. Derrick Barnes, M.D.Marina, CA · $1,035 in drug and device payments (2025) · Telehealth ·
(831) 582-2100 Dr. Alborz Borjian, DOMarina Del Rey, CA · $5,750 in drug and device payments (2025) ·
(310) 694-5255 Dr. Allan Lichtman, M.D.Marina Del Rey, CA · No drug or device payments recorded (2025) ·
(310) 301-0909 Dr. Charles Hamrell, M.D.Marina Del Rey, CA · No drug or device payments recorded (2025) ·
(310) 980-1314 Dr. Jamie Lipeles, D.O.Marina Del Rey, CA · $113 in drug and device payments (2025) · Telehealth ·
(310) 629-2447 Dr. Julie Gould, M.D.Marina Del Rey, CA · No drug or device payments recorded (2025) ·
(310) 694-5255 Dr. Quy Nguyen, M.D.Marina Del Rey, CA · $67 in drug and device payments (2025) ·
(310) 301-0230 Dr. Santelia RoseMarina Del Rey, CA · No drug or device payments recorded (2025) ·
(310) 694-5255 Dr. Ashley Vance, M.D.Martinez, CA · No drug or device payments recorded (2025) ·
(925) 370-5000 Dr. Emily Newfield, MDMartinez, CA · No drug or device payments recorded (2025) ·
(925) 370-5000 Dr. Huy DaoMartinez, CA · No drug or device payments recorded (2025) · Telehealth ·
(925) 372-1000 Dr. Joseph Bourque, MDMartinez, CA · No drug or device payments recorded (2025) ·
(925) 372-1000 Dr. Joseph MacedoMartinez, CA · No drug or device payments recorded (2025) ·
(925) 370-5110 Dr. Judith BlissMartinez, CA · No drug or device payments recorded (2025) ·
(925) 370-5110 Dr. Ogo Mbanugo, MDMartinez, CA · $1,602 in drug and device payments (2025) ·
(925) 370-5110 Dr. Paris Scott, MDMartinez, CA · No drug or device payments recorded (2025) ·
(925) 370-5000 Dr. Ruxandra Radu-radulescuMartinez, CA · No drug or device payments recorded (2025) ·
(925) 370-5608 Dr. Susan FeierabendMartinez, CA · No drug or device payments recorded (2025) ·
(925) 370-5110 Dr. Victoria Mancuso, MDMartinez, CA · No drug or device payments recorded (2025) ·
(925) 372-1000 Dr. Natasha Phillips, D.O.Marysville, CA · No drug or device payments recorded (2025) ·
(530) 749-4300 Dr. Ramesh Pundi, MDMarysville, CA · $163 in drug and device payments (2025) ·
(530) 741-3242 Dr. Scott Gale, M.D.Mcclellan, CA · No drug or device payments recorded (2025) ·
(916) 561-7480 Dr. Amanda Little-richardson, MDMenlo Park, CA · No drug or device payments recorded (2025) · Telehealth ·
(650) 498-7489 Dr. Aroti Achari, M.D.Menlo Park, CA · $21 in drug and device payments (2025) ·
(650) 498-6500 Dr. Carrie Rothstein, MDMenlo Park, CA · No drug or device payments recorded (2025) · Telehealth ·
(650) 498-6500 Dr. Catherine Wilkes, MDMenlo Park, CA · No drug or device payments recorded (2025) · Telehealth ·
(650) 498-6500 Dr. Francis Mcnee, MDMenlo Park, CA · No drug or device payments recorded (2025) ·
(650) 498-6500 Dr. Jennifer Conti, M.D., M.S.Menlo Park, CA · $106 in drug and device payments (2025) ·
(650) 498-6500 Dr. Kamilee Christenson, MDMenlo Park, CA · $106 in drug and device payments (2025) ·
(650) 497-8022 Dr. Nanette Lashay, MDMenlo Park, CA · No drug or device payments recorded (2025) ·
(650) 346-2996 Dr. Navdeesh Reiners, MDMenlo Park, CA · No drug or device payments recorded (2025) · Telehealth ·
(888) 924-1036 Dr. Paiyarut Kanjanavaikoon, MDMenlo Park, CA · No drug or device payments recorded (2025) ·
(650) 498-6675 Dr. Annapurna Reddy, M.D.Merced, CA · No drug or device payments recorded (2025) ·
(209) 384-5855 Dr. Brian Vierra, MDMerced, CA · No drug or device payments recorded (2025) ·
(209) 725-7560 Dr. Chieh Tsai, M.D.Merced, CA · No drug or device payments recorded (2025) ·
(209) 383-1343 Dr. Kristina Sogocio, MDMerced, CA · No drug or device payments recorded (2025) ·
(209) 723-6624 Dr. Naim Basel, D.O.Merced, CA · No drug or device payments recorded (2025) ·
(209) 383-5871 Dr. Serene Alexander, D.O.Merced, CA · $2,566 in drug and device payments (2025) · Telehealth ·
(209) 383-5871 Dr. Melissa Rankin, MDMill Valley, CA · No drug or device payments recorded (2025) ·
(415) 746-6140 Dr. Chanan Duong, MDMilpitas, CA · No drug or device payments recorded (2025) ·
(408) 945-2933 Dr. Danna Doering, MDMilpitas, CA · No drug or device payments recorded (2025) ·
(650) 945-2900 Dr. Diem Truong, MDMilpitas, CA · No drug or device payments recorded (2025) ·
(650) 945-2900 Dr. Hanh Hoang, M.D.Milpitas, CA · $360 in drug and device payments (2025) ·
(408) 930-1719 Conditions Obstetrics & Gynecology providers in California commonly treat
Patients often search by condition rather than specialty. These are conditions typically managed by Obstetrics & Gynecology providers. Individual practices vary, so confirm with the provider before booking.
- Pregnancy care
- Endometriosis
- Fibroids
- PCOS
- Menopause
- Contraception
Common questions
How many Obstetrics & Gynecology providers are in California?There are 5,103 Obstetrics & Gynecology providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.
Do Obstetrics & Gynecology providers in California offer telehealth?Yes. 564 of the 5,103 Obstetrics & Gynecology providers in California (about 11%) report offering telehealth services in CMS data.
Which cities in California have the most Obstetrics & Gynecology providers?Los Angeles (380), San Diego (278), San Francisco (249) have the highest concentration of Obstetrics & Gynecology providers in California.
How many Obstetrics & Gynecology providers in California received drug or device company payments?1,864 of 5,103 Obstetrics & Gynecology providers in California (37%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
What conditions do Obstetrics & Gynecology providers in California treat?Obstetrics & Gynecology providers commonly treat pregnancy care, endometriosis, fibroids, PCOS, menopause and related conditions. Individual practices vary, so confirm with the provider before booking.
Where does this data come from?Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.
Do most OB-GYNs in California work in independent practices or large health systems?Among 2,619 OB-GYNs in California enrolled in Medicare, 18% bill through a solo or small practice with fewer than 10 clinicians, 16% through a mid-size group of 10 to 99, and 66% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do OB-GYNs in California work at?According to CMS facility affiliation records, the California hospitals where the most OB-GYNs hold privileges are Hoag Memorial Hospital Presbyterian in Newport Beach; Cedars-Sinai Medical Center in Los Angeles; California Pacific Medical Ctr-Davies Campus Hosp in San Francisco.
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