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. William Jurewitz, M.D.
San Pedro, CA · No drug or device payments recorded (2025) · (310) 622-5586
Dr. Anne Wara, MD
San Rafael, CA · No drug or device payments recorded (2025) · (415) 444-2000
Dr. Bonnie Sudler, MD
San Rafael, CA · No drug or device payments recorded (2025) · (415) 444-2000
Dr. Cassius Scott, MD
San Rafael, CA · No drug or device payments recorded (2025) · (415) 444-2000
Dr. Charles Bookoff, MD
San Rafael, CA · No drug or device payments recorded (2025) · (415) 499-6890
Dr. Gabriel Farkas, MD
San Rafael, CA · No drug or device payments recorded (2025) · (415) 444-2000
Dr. Harris Simmonds, MD
San Rafael, CA · No drug or device payments recorded (2025) · (415) 455-8814
Dr. Helen Noble, MD
San Rafael, CA · No drug or device payments recorded (2025) · (415) 444-2000
Dr. Jan Herr, MD
San Rafael, CA · No drug or device payments recorded (2025) · (415) 444-2000
Dr. Jenny Soriano, MD
San Rafael, CA · No drug or device payments recorded (2025) · (415) 499-4030
Dr. Judy Hennessey, MD
San Rafael, CA · No drug or device payments recorded (2025) · (415) 444-2000
Dr. Maria Iniguez, M.D.
San Rafael, CA · No drug or device payments recorded (2025) · (415) 444-4450
Dr. Mark Glasser, MD
San Rafael, CA · No drug or device payments recorded (2025) · (415) 444-2000
Dr. Martin Schwartz, MD OB GYN
San Rafael, CA · No drug or device payments recorded (2025) · (415) 499-4030
Dr. Melissa Crochet, M.D.
San Rafael, CA · $16 in drug and device payments (2025) · (415) 444-4440
Dr. Monica Chiu, M.D.
San Rafael, CA · No drug or device payments recorded (2025) · (707) 765-3940
Dr. Nicole Betenia, MD MPH
San Rafael, CA · No drug or device payments recorded (2025) · (415) 448-1500
Dr. Peter Heinlein, MD
San Rafael, CA · $155 in drug and device payments (2025) · (415) 444-2000
Dr. Cassandra Mellinger
San Ramon, CA · No drug or device payments recorded (2025) · (925) 254-9840
Dr. Curtis Appel, MD
San Ramon, CA · No drug or device payments recorded (2025) · (925) 244-7600
Dr. Emil Eyvazzadeh, MD
San Ramon, CA · No drug or device payments recorded (2025) · (925) 277-1441
Dr. Fadel Shammout, MD
San Ramon, CA · $282 in drug and device payments (2025) · (925) 587-4808
Dr. Helen Matthews, M.D.
San Ramon, CA · No drug or device payments recorded (2025) · Telehealth · (925) 452-6644
Dr. Leroy Leabman, MD
San Ramon, CA · No drug or device payments recorded (2025) · (925) 820-4476
Dr. Maria Quan, MD
San Ramon, CA · $66 in drug and device payments (2025) · Telehealth · (925) 263-5583
Dr. Mark Lollar, MD
San Ramon, CA · No drug or device payments recorded (2025) · (925) 327-1500
Dr. Ravi Agarwal, MD
San Ramon, CA · $475 in drug and device payments (2025) · (925) 867-1800
Dr. Renee Hilliard, M.D.
San Ramon, CA · No drug or device payments recorded (2025) · (925) 327-1500
Dr. Sadaf Samizay, M.D.
San Ramon, CA · No drug or device payments recorded (2025) · (925) 587-4808
Dr. Spenser Perloff, M.D.
San Ramon, CA · $683 in drug and device payments (2025) · Telehealth · (925) 254-9840
Dr. Susan Raymond, MD
San Ramon, CA · $42 in drug and device payments (2025) · (925) 244-4700
Dr. Akta Patel, M.D.
Santa Ana, CA · $131 in drug and device payments (2025) · (714) 796-7881
Dr. Ambica Garg, M. D.
Santa Ana, CA · $7 in drug and device payments (2025) · (714) 953-1112
Dr. Amir Nasseri, M.D.
Santa Ana, CA · No drug or device payments recorded (2025) · (714) 966-9094
Dr. Christopher Donnelly, M.D.
Santa Ana, CA · No drug or device payments recorded (2025) · (714) 967-4700
Dr. Daniel Reich, MD
Santa Ana, CA · $51 in drug and device payments (2025) · (714) 543-4880
Dr. Debora Sedaghat, DO
Santa Ana, CA · $111 in drug and device payments (2025) · (714) 953-4242
Dr. Diemchi Nguyenphuc, MD
Santa Ana, CA · $306 in drug and device payments (2025) · (714) 929-2300
Dr. Emad Hashemi, M.D.
Santa Ana, CA · $29 in drug and device payments (2025) · (714) 929-2300
Dr. Ernestine Wen, M.D
Santa Ana, CA · No drug or device payments recorded (2025) · (714) 967-4792
Dr. George Kallins, M.D.
Santa Ana, CA · No drug or device payments recorded (2025) · (714) 668-8888
Dr. Hossein Kani
Santa Ana, CA · No drug or device payments recorded (2025) · (714) 972-2111
Dr. Hubert Jeng, M.D
Santa Ana, CA · No drug or device payments recorded (2025) · (714) 850-9263
Dr. Hyung Kim, MD
Santa Ana, CA · No drug or device payments recorded (2025) · (714) 540-7720
Dr. Jaime Ludmir, M.D
Santa Ana, CA · $72 in drug and device payments (2025) · (714) 754-7799
Dr. Janel Yoshida, MD
Santa Ana, CA · No drug or device payments recorded (2025) · (714) 830-6500
Dr. Jay Masserman, M.D.
Santa Ana, CA · No drug or device payments recorded (2025) · (657) 282-6355
Dr. Jenny Lee, M.D.
Santa Ana, CA · No drug or device payments recorded (2025) · (714) 929-2493
Dr. Kathy Anderson, M.D.
Santa Ana, CA · No drug or device payments recorded (2025) · (714) 547-7575
Dr. Pratibha Desai, M D FACOG
Santa Ana, CA · No drug or device payments recorded (2025) · (714) 834-8780

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.