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. Kimberly Kelly, MDAnaheim, CA · No drug or device payments recorded (2025) ·
(888) 988-2800 Dr. Kip Taylor, MDAnaheim, CA · No drug or device payments recorded (2025) ·
(888) 988-2800 Dr. Latasha Mason, MDAnaheim, CA · No drug or device payments recorded (2025) ·
(888) 988-2800 Dr. Lorena Jaramillo, M.D.Anaheim, CA · No drug or device payments recorded (2025) ·
(714) 279-4000 Dr. Mary Shaffer, MDAnaheim, CA · No drug or device payments recorded (2025) ·
(888) 988-2800 Dr. Michael Gleeson, MDAnaheim, CA · No drug or device payments recorded (2025) ·
(888) 988-2800 Dr. Nancy Arovas, MDAnaheim, CA · No drug or device payments recorded (2025) ·
(888) 988-2800 Dr. Neal Lonky, MDAnaheim, CA · No drug or device payments recorded (2025) ·
(888) 988-2800 Dr. Nicte Flores, MDAnaheim, CA · No drug or device payments recorded (2025) ·
(888) 988-2800 Dr. Nilima Mamtora, MDAnaheim, CA · $181 in drug and device payments (2025) · Telehealth ·
(714) 956-3535 Dr. Noelani Guaderrama, MDAnaheim, CA · No drug or device payments recorded (2025) ·
(888) 988-2800 Dr. Patrick Roth, MDAnaheim, CA · No drug or device payments recorded (2025) ·
(888) 988-2800 Dr. Paula Richter, MDAnaheim, CA · No drug or device payments recorded (2025) ·
(888) 988-2800 Dr. Peggy Grau, MDAnaheim, CA · No drug or device payments recorded (2025) ·
(888) 988-2800 Dr. Rajasree Seshadri, DOAnaheim, CA · No drug or device payments recorded (2025) ·
(888) 988-2800 Dr. Ronald Kohorn, MDAnaheim, CA · No drug or device payments recorded (2025) ·
(888) 988-2800 Dr. Rosa Bribiesca, NP NURSE PRACTITIONE Dr. Sang Kim, MDAnaheim, CA · No drug or device payments recorded (2025) ·
(714) 827-0390 Dr. Sumana Yeturu, MDAnaheim, CA · No drug or device payments recorded (2025) ·
(888) 988-2800 Dr. Walter Berberich Jr., MDAnaheim, CA · No drug or device payments recorded (2025) ·
(888) 988-2800 Dr. William Hayton, MDAnaheim, CA · No drug or device payments recorded (2025) ·
(888) 988-2800 Dr. Yuna Medina, MDAnaheim, CA · No drug or device payments recorded (2025) ·
(888) 988-2800 Dr. Yung Tae Kim, MDAnaheim, CA · No drug or device payments recorded (2025) ·
(714) 527-7731 Dr. Anahita LatorraAntioch, CA · No drug or device payments recorded (2025) ·
(925) 813-3400 Dr. Cori Pachtman, MDAntioch, CA · No drug or device payments recorded (2025) ·
(925) 813-6500 Dr. Daniel Zimmerman, MDAntioch, CA · No drug or device payments recorded (2025) ·
(925) 754-9223 Dr. Darcy Baird, MDAntioch, CA · No drug or device payments recorded (2025) ·
(925) 813-6500 Dr. Edgard Sanchez, MDAntioch, CA · No drug or device payments recorded (2025) ·
(925) 779-5000 Dr. James Ferry, MDAntioch, CA · No drug or device payments recorded (2025) ·
(925) 813-6500 Dr. Jessica Lennon, MDAntioch, CA · No drug or device payments recorded (2025) ·
(925) 756-3400 Dr. Johanna Burch, MDAntioch, CA · No drug or device payments recorded (2025) ·
(925) 813-6500 Dr. Katrina Hendricks, MDAntioch, CA · No drug or device payments recorded (2025) ·
(925) 779-5090 Dr. Kelly Park, D.O.Antioch, CA · No drug or device payments recorded (2025) ·
(925) 813-6500 Dr. Kenneth Grullon, MDAntioch, CA · No drug or device payments recorded (2025) ·
(925) 779-5000 Dr. Kyla Yee, M.D.Antioch, CA · No drug or device payments recorded (2025) ·
(925) 756-3400 Dr. Ligia Giese, MDAntioch, CA · No drug or device payments recorded (2025) ·
(925) 779-5000 Dr. Mary Klemm, DOAntioch, CA · No drug or device payments recorded (2025) ·
(925) 813-6500 Dr. Nicole Shelton, M.D.Antioch, CA · No drug or device payments recorded (2025) ·
(925) 813-3400 Dr. Nina Lee, MDAntioch, CA · No drug or device payments recorded (2025) ·
(925) 779-5000 Dr. Sarah-bianca Dolisca, M.D.Antioch, CA · No drug or device payments recorded (2025) ·
(678) 907-0342 Dr. Susie Ahn, MDAntioch, CA · No drug or device payments recorded (2025) ·
(925) 779-5090 Dr. Vivien Tin, MDAntioch, CA · No drug or device payments recorded (2025) ·
(925) 779-5000 Dr. Young Kim, M.D.Antioch, CA · No drug or device payments recorded (2025) ·
(925) 778-0700 Dr. Amal Guha, MDApple Valley, CA · $18 in drug and device payments (2025) ·
(760) 242-2099 Dr. Annette Hollingsworth-moore, MDApple Valley, CA · $350 in drug and device payments (2025) ·
(760) 813-3699 Dr. Daniel Villarosa, M.DApple Valley, CA · $203 in drug and device payments (2025) ·
(760) 242-6652 Dr. Gurleen Toor, NPApple Valley, CA · $62 in drug and device payments (2025) ·
(760) 242-2146 Dr. Mohammad Ahmadinia, MDApple Valley, CA · $39 in drug and device payments (2025) ·
(760) 946-2243 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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