HealthcareDiscovery.AI / Doctors / California / Obstetrics & Gynecology

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 in Los Angeles380 providers
Obstetrics & Gynecology in San Diego278 providers
Obstetrics & Gynecology in San Francisco249 providers
Obstetrics & Gynecology in Sacramento197 providers
Obstetrics & Gynecology in San Jose128 providers
Obstetrics & Gynecology in Oakland100 providers
Obstetrics & Gynecology in Orange81 providers
Obstetrics & Gynecology in Torrance76 providers
Obstetrics & Gynecology in Fresno74 providers
Obstetrics & Gynecology in Bakersfield70 providers
Obstetrics & Gynecology in Riverside69 providers
Obstetrics & Gynecology in La Jolla66 providers
Obstetrics & Gynecology in Long Beach63 providers
Obstetrics & Gynecology in Loma Linda61 providers
Obstetrics & Gynecology in Santa Monica57 providers
Obstetrics & Gynecology in Walnut Creek56 providers
Obstetrics & Gynecology in Anaheim56 providers
Obstetrics & Gynecology in Santa Clara53 providers
Obstetrics & Gynecology in Modesto53 providers
Obstetrics & Gynecology in Mountain View50 providers
Obstetrics & Gynecology in Fontana50 providers
Obstetrics & Gynecology in Fremont49 providers
Obstetrics & Gynecology in Pasadena45 providers
Obstetrics & Gynecology in Roseville45 providers

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. Neha Sharma
Santa Maria, CA · $1,500 in drug and device payments (2025) · (805) 928-3678
Dr. Perla Park, M.D
Santa Maria, CA · $52 in drug and device payments (2025) · (805) 938-9200
Dr. Peter Roca, M.D.
Santa Maria, CA · No drug or device payments recorded (2025) · (805) 354-7101
Dr. Peter Singson, M.D.
Santa Maria, CA · No drug or device payments recorded (2025) · (805) 739-8710
Dr. Rebecca Jones, M.D.
Santa Maria, CA · $16 in drug and device payments (2025) · (805) 354-7101
Dr. Rebecca Ruebsamen, DO
Santa Maria, CA · No drug or device payments recorded (2025) · (805) 354-7101
Dr. Robert Mcghie, M.D.
Santa Maria, CA · No drug or device payments recorded (2025) · (805) 928-3678
Dr. Stephanie Zamora, DO
Santa Maria, CA · No drug or device payments recorded (2025) · (805) 354-7101
Dr. Tad Callahan, MD
Santa Maria, CA · No drug or device payments recorded (2025) · (805) 922-0481
Dr. Taimur Chaudhry, MD
Santa Maria, CA · No drug or device payments recorded (2025) · (805) 354-7101
Dr. Vellore Kasturi, MD
Santa Maria, CA · $236 in drug and device payments (2025) · (805) 928-3678
Dr. Xinyue Chen, DO
Santa Maria, CA · No drug or device payments recorded (2025) · (805) 354-7101
Dr. Abigail Armstrong, M.D.
Santa Monica, CA · $261 in drug and device payments (2025) · (323) 410-1291
Dr. Adel Samaan, MD
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 914-0130
Dr. Albert Phillips
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 828-8585
Dr. Alexander Chiang, M.D.
Santa Monica, CA · $1,263 in drug and device payments (2025) · Telehealth · (310) 301-8707
Dr. Allison Leong, M.D.
Santa Monica, CA · $283 in drug and device payments (2025) · (310) 264-1777
Dr. Allyson Gonzalez, M.D.
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 420-6546
Dr. Amy Stoddard, M.D.
Santa Monica, CA · $77 in drug and device payments (2025) · Telehealth · (310) 301-8707
Dr. Angela Nishio, M.D.
Santa Monica, CA · $683 in drug and device payments (2025) · Telehealth · (310) 828-8585
Dr. Banafsheh Bayati, M.D.
Santa Monica, CA · $89 in drug and device payments (2025) · (424) 348-3800
Dr. Brianne Romeroso, M.D.
Santa Monica, CA · $123 in drug and device payments (2025) · Telehealth · (310) 301-8707
Dr. Brittany Davis
Santa Monica, CA · No drug or device payments recorded (2025) · Telehealth · (310) 794-7274
Dr. Candice Tilles, M.D.
Santa Monica, CA · $1,014 in drug and device payments (2025) · (310) 829-7878
Dr. Canty Wang
Santa Monica, CA · $716 in drug and device payments (2025) · (310) 828-8585
Dr. Caroline Colin, M.D.
Santa Monica, CA · $35 in drug and device payments (2025) · (310) 829-0080
Dr. Carolyne Parks, MD
Santa Monica, CA · $1,085 in drug and device payments (2025) · (310) 829-7878
Dr. Daniel Ginn, D.O.
Santa Monica, CA · $536 in drug and device payments (2025) · Telehealth · (310) 794-7274
Dr. Dina Kiseleva, M.D.
Santa Monica, CA · $1,409 in drug and device payments (2025) · (310) 829-7878
Dr. Emily Sikking, MD
Santa Monica, CA · $427 in drug and device payments (2025) · (310) 264-1820
Dr. Glenn Miller, M.D.
Santa Monica, CA · $21 in drug and device payments (2025) · (310) 963-6433
Dr. Hannah Reiser, MD
Santa Monica, CA · No drug or device payments recorded (2025) · Telehealth · (310) 899-7500
Dr. Henry Hasserjian, M.D.
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 828-8585
Dr. Jacqueline Trejo, M.D.
Santa Monica, CA · $615 in drug and device payments (2025) · (310) 828-8585
Dr. James Moran, M.D.
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 582-7312
Dr. Janet Yamamura, MD
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 828-7565
Dr. Jessica Rastegar, M.D.
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 255-0990
Dr. Jitsen Chang, M.D.
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 255-0990
Dr. Jon Matsunaga, M.D.
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 829-7878
Dr. Karen Blanchard, M.D.
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 264-1777
Dr. Karla Iacampo, MD
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 582-7312
Dr. Kathryn Goldrath
Santa Monica, CA · $1,133 in drug and device payments (2025) · Telehealth · (310) 794-7274
Dr. Kavita Vinekar, M.D.
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 794-7274
Dr. Klara Vogel, M.D.
Santa Monica, CA · $1,086 in drug and device payments (2025) · Telehealth · (310) 829-7878
Dr. Lawrence Bruksch, M.D.
Santa Monica, CA · $149 in drug and device payments (2025) · (310) 255-0990
Dr. Lennard Kessler, MD
Santa Monica, CA · $225 in drug and device payments (2025) · (310) 453-0577
Dr. Lisa Masterson, MD
Santa Monica, CA · $428 in drug and device payments (2025) · Telehealth · (310) 451-9900
Dr. Lisa Valle, D.O.
Santa Monica, CA · $21 in drug and device payments (2025) · (424) 231-7116
Dr. Loren Castellon, MD
Santa Monica, CA · $741 in drug and device payments (2025) · (310) 828-8585
Dr. Macey Barnes, MD
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 794-7274

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.

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.

Obstetrics & Gynecology in all 50 states Search all 5,103 in the directory Ask Zach for help choosing

Related

Try a city like Tucson, a zip like 85016, or a specialty like psychiatry. For a doctor by name, use the full search.
Sources: NPPES (CMS), Doctors and Clinicians national files, CMS Open Payments 2025. Updated monthly. Records are public federal data and are not verified credentials, licensure checks, or endorsements. This directory is informational and not medical advice. How we build this directory. Are you a Obstetrics & Gynecology in California? Get featured.