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. Lichun Huo, MD
Long Beach, CA · $672 in drug and device payments (2025) · (657) 241-8041
Dr. Lisa Delong, M.D.
Long Beach, CA · $155 in drug and device payments (2025) · (562) 933-5437
Dr. Mailinh Vu, M.D.
Long Beach, CA · $733 in drug and device payments (2025) · (562) 424-8422
Dr. Martin Muth, M.D.
Long Beach, CA · No drug or device payments recorded (2025) · (657) 241-8990
Dr. Mary Louise Kiernan, MD
Long Beach, CA · $752 in drug and device payments (2025) · (562) 424-8422
Dr. Maurice Lam, M.D.
Long Beach, CA · No drug or device payments recorded (2025) · (562) 595-0591
Dr. Mayra Contreras, M.D.
Long Beach, CA · No drug or device payments recorded (2025) · (562) 989-5722
Dr. Megan Oakes, MD
Long Beach, CA · No drug or device payments recorded (2025) · (562) 977-8510
Dr. Melissa Perez
Long Beach, CA · No drug or device payments recorded (2025) · (657) 241-8990
Dr. Michael Cogan, MD
Long Beach, CA · $317 in drug and device payments (2025) · (562) 989-5722
Dr. Michele Eno, M.D.
Long Beach, CA · $27 in drug and device payments (2025) · (562) 426-3333
Dr. Mohammad Emamian, M.D.
Long Beach, CA · $277 in drug and device payments (2025) · (562) 437-1882
Dr. Mone Sandhu, M.D.
Long Beach, CA · No drug or device payments recorded (2025) · (562) 597-8190
Dr. Monica Leff, MD
Long Beach, CA · $107 in drug and device payments (2025) · (562) 595-7709
Dr. Nicholas Lee, M.D.
Long Beach, CA · No drug or device payments recorded (2025) · (562) 597-0376
Dr. Paul Weber, M.D., PH.D.
Long Beach, CA · No drug or device payments recorded (2025) · (657) 241-8990
Dr. Phyllis Oster, M.D.
Long Beach, CA · No drug or device payments recorded (2025) · (657) 241-8990
Dr. Rosanna Galzote-carino, M.D.
Long Beach, CA · $19 in drug and device payments (2025) · (657) 241-8990
Dr. Ruben Marmet, MD
Long Beach, CA · No drug or device payments recorded (2025) · (909) 382-0201
Dr. Ruthann Devera, M.D.
Long Beach, CA · $495 in drug and device payments (2025) · (657) 241-8041
Dr. Sacha Kang-chou, M.D.
Long Beach, CA · $114 in drug and device payments (2025) · (562) 595-5331
Dr. Sandra Makela, MD
Long Beach, CA · No drug or device payments recorded (2025) · (562) 595-7709
Dr. Shelly Dutt, M.D.
Long Beach, CA · No drug or device payments recorded (2025) · (657) 241-8990
Dr. Soon Sohn, MD
Long Beach, CA · No drug or device payments recorded (2025) · (562) 426-9661
Dr. Stanley Olenick, MD
Long Beach, CA · $23 in drug and device payments (2025) · (562) 427-7486
Dr. Sunaina Sehwani, M.D.
Long Beach, CA · $993 in drug and device payments (2025) · (657) 241-8990
Dr. Virginia Monsanto, NP
Long Beach, CA · No drug or device payments recorded (2025) · (562) 599-2248
Dr. Yahaira Plata
Long Beach, CA · No drug or device payments recorded (2025) · (562) 424-8422
Dr. Yumi Mendez-ishizaki, MD
Long Beach, CA · No drug or device payments recorded (2025) · (657) 241-8990
Dr. Allyson Davis, M.D.
Los Alamitos, CA · No drug or device payments recorded (2025) · (801) 674-8647
Dr. Andrew Awadalla, MD
Los Alamitos, CA · No drug or device payments recorded (2025) · (562) 429-9433
Dr. Carsten Ronlov, M.D.
Los Alamitos, CA · No drug or device payments recorded (2025) · (562) 429-9433
Dr. Cynthia Chao, DO A PROFESSIONAL CO
Los Alamitos, CA · $436 in drug and device payments (2025) · (562) 931-3137
Dr. Helen Mahoney, MD
Los Alamitos, CA · No drug or device payments recorded (2025) · (562) 431-5103
Dr. James Ger, M.D.
Los Alamitos, CA · No drug or device payments recorded (2025) · (562) 431-3521
Dr. Joel Kizner, M.D.
Los Alamitos, CA · No drug or device payments recorded (2025) · (562) 431-3606
Dr. Karen Koe, MD
Los Alamitos, CA · $830 in drug and device payments (2025) · Telehealth · (562) 595-1961
Dr. Michelle Reddy, MD
Los Alamitos, CA · $466 in drug and device payments (2025) · Telehealth · (562) 595-1961
Dr. Nancy Kimber, M.D.
Los Alamitos, CA · No drug or device payments recorded (2025) · (562) 430-0805
Dr. Rebecca Schwartz, MD
Los Alamitos, CA · $860 in drug and device payments (2025) · Telehealth · (562) 595-1961
Dr. Sabira Tejani, M.D.
Los Alamitos, CA · No drug or device payments recorded (2025) · (562) 493-1460
Dr. Timothy Rand, M.D.
Los Alamitos, CA · No drug or device payments recorded (2025) · (562) 431-5000
Dr. Virginia Agnelli, M.D.
Los Alamitos, CA · $61 in drug and device payments (2025) · (562) 431-3606
Dr. Abbie Hageman, MD
Los Altos, CA · $24 in drug and device payments (2025) · Telehealth · (650) 254-5200
Dr. Ashley Taggart
Los Altos, CA · No drug or device payments recorded (2025) · (650) 254-5200
Dr. Hardat Sukhdeo, MD
Los Altos, CA · $18 in drug and device payments (2025) · (650) 254-5200
Dr. Karen Shin, MD
Los Altos, CA · $18 in drug and device payments (2025) · (650) 254-5200
Dr. Kirstin Woo, MD
Los Altos, CA · No drug or device payments recorded (2025) · Telehealth · (650) 254-5200
Dr. Laurie Karl, M.D.
Los Altos, CA · No drug or device payments recorded (2025) · Telehealth · (650) 254-5200
Dr. Adrianna Barrett, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 783-4011

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.