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Gastroenterologists in California

Data updated monthly · Last refresh October 2026

2,135 Gastroenterology providers practice in California, including 918 (43%) 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.

2,135providers
918telehealth
Los Angelestop city

Gastroenterology by city in California

Choose a city to see providers there.

Gastroenterology in Los Angeles195 providers
Gastroenterology in San Diego126 providers
Gastroenterology in San Francisco103 providers
Gastroenterology in Sacramento89 providers
Gastroenterology in Stanford63 providers
Gastroenterology in San Jose46 providers
Gastroenterology in Orange45 providers
Gastroenterology in Torrance44 providers
Gastroenterology in Fresno41 providers
Gastroenterology in La Jolla36 providers
Gastroenterology in Loma Linda33 providers
Gastroenterology in Walnut Creek33 providers
Gastroenterology in Palo Alto29 providers
Gastroenterology in Oakland27 providers
Gastroenterology in Fremont26 providers
Gastroenterology in Santa Monica26 providers
Gastroenterology in West Hollywood26 providers
Gastroenterology in Anaheim25 providers
Gastroenterology in Newport Beach23 providers
Gastroenterology in Beverly Hills23 providers
Gastroenterology in Riverside22 providers
Gastroenterology in Irvine22 providers
Gastroenterology in Modesto21 providers
Gastroenterology in Santa Rosa19 providers

Gastroenterology 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. Katherine Hahn, MD
Beverly Hills, CA · $87 in drug and device payments (2025) · Telehealth · (310) 248-8200
Dr. Leo Treyzon, M.D.
Beverly Hills, CA · $3,627 in drug and device payments (2025) · (310) 688-4141
Dr. Lisa Lin
Beverly Hills, CA · $569 in drug and device payments (2025) · Telehealth · (310) 273-0040
Dr. Marc Edelstein, M.D.
Beverly Hills, CA · $834 in drug and device payments (2025) · Telehealth · (310) 659-1300
Dr. Pauline Yasmeh, MD
Beverly Hills, CA · $591 in drug and device payments (2025) · (310) 598-5371
Dr. Robert Mocharla, M.D.
Beverly Hills, CA · $490 in drug and device payments (2025) · Telehealth · (310) 855-7002
Dr. Shahab Mehdizadeh, M.D.
Beverly Hills, CA · $6,813 in drug and device payments (2025) · Telehealth · (310) 246-4100
Dr. Shahrad Hakimian, M.D.
Beverly Hills, CA · $258 in drug and device payments (2025) · Telehealth · (310) 248-8200
Dr. Simi Singh-mitchell, M.D.
Beverly Hills, CA · $594 in drug and device payments (2025) · Telehealth · (310) 248-8200
Dr. Soraya Ross, MD
Beverly Hills, CA · $129 in drug and device payments (2025) · Telehealth · (310) 888-1234
Dr. Theodore Stein, M.D.
Beverly Hills, CA · $227 in drug and device payments (2025) · (310) 967-1884
Dr. Tova Sofer
Beverly Hills, CA · $1,070 in drug and device payments (2025) · Telehealth · (310) 248-8200
Dr. Mostafa Hamdy, MD
Brawley, CA · No drug or device payments recorded (2025) · (760) 344-7976
Dr. Oscar Lopez, MD
Brawley, CA · $251 in drug and device payments (2025) · (760) 351-4400
Dr. Patrick Sweet, MD
Brawley, CA · $711 in drug and device payments (2025) · Telehealth · (760) 517-7845
Dr. Ramakrishna Gollapudi, M.D.
Brentwood, CA · $103 in drug and device payments (2025) · Telehealth · (925) 756-3400
Dr. Benedict Garrett, MD
Burbank, CA · $472 in drug and device payments (2025) · Telehealth · (818) 845-3773
Dr. David Alexanian, M.D.
Burbank, CA · $904 in drug and device payments (2025) · Telehealth · (818) 845-3773
Dr. David Schulman, MD
Burbank, CA · $163 in drug and device payments (2025) · (818) 845-3773
Dr. Dean La Barba, MD
Burbank, CA · $1,075 in drug and device payments (2025) · Telehealth · (818) 845-3733
Dr. Esmail Hessami, MD
Burbank, CA · No drug or device payments recorded (2025) · (818) 845-9222
Dr. Henry Fisher, MD
Burbank, CA · $818 in drug and device payments (2025) · Telehealth · (818) 845-3773
Dr. John Kasher, M.D.
Burbank, CA · $637 in drug and device payments (2025) · Telehealth · (818) 295-6944
Dr. Kenneth Ballan, M.D.
Burbank, CA · No drug or device payments recorded (2025) · (818) 295-6944
Dr. Kerry Weiner, M.D.
Burbank, CA · No drug or device payments recorded (2025) · (818) 295-6944
Dr. Mary Farid, D.O.
Burbank, CA · $186 in drug and device payments (2025) · Telehealth · (818) 845-3773
Dr. Paul Ephraim, M.D.
Burbank, CA · No drug or device payments recorded (2025) · (818) 295-6944
Dr. Richard Kuritzkes, MD
Burbank, CA · $576 in drug and device payments (2025) · Telehealth · (818) 845-3773
Dr. Scott Hahm, M.D.
Burbank, CA · $470 in drug and device payments (2025) · Telehealth · (818) 843-9020
Dr. Stephen Levinson, MD
Burbank, CA · No drug or device payments recorded (2025) · (818) 845-3773
Dr. Tina Storage, M.D.
Burbank, CA · $1,660 in drug and device payments (2025) · Telehealth · (818) 843-9015
Dr. Vikas Pabby, M.D.
Burbank, CA · $489 in drug and device payments (2025) · Telehealth · (818) 843-9021
Dr. Anne Thai, M.D.
Burlingame, CA · $1,691 in drug and device payments (2025) · Telehealth · (650) 685-6105
Dr. Ernest Ribera, MD
Burlingame, CA · $3,116 in drug and device payments (2025) · Telehealth · (650) 342-6506
Dr. Katherine Wong
Burlingame, CA · $411 in drug and device payments (2025) · Telehealth · (650) 652-8480
Dr. Kenneth Roost, MD
Burlingame, CA · No drug or device payments recorded (2025) · (650) 697-9146
Dr. Michael Bender, M.D.
Burlingame, CA · No drug or device payments recorded (2025) · (650) 652-8480
Dr. Michael Northcutt, M.D.
Burlingame, CA · No drug or device payments recorded (2025) · (650) 652-8480
Dr. Negar Yaghooti, M.D.
Burlingame, CA · $1,106 in drug and device payments (2025) · Telehealth · (650) 342-6506
Dr. Prachi Nene, M.D.
Burlingame, CA · $358 in drug and device payments (2025) · Telehealth · (650) 777-4400
Dr. Rani Berry
Burlingame, CA · $954 in drug and device payments (2025) · Telehealth · (650) 652-8480
Dr. Robert Osterhoff, M.D.
Burlingame, CA · $970 in drug and device payments (2025) · Telehealth · (650) 652-8500
Dr. Tressia Hing, M.D.
Burlingame, CA · $125 in drug and device payments (2025) · (650) 652-8480
Dr. Vino Verghese, MD
Burlingame, CA · $542 in drug and device payments (2025) · Telehealth · (650) 652-8480
Dr. Laya Nasrollah
Camarillo, CA · $181 in drug and device payments (2025) · Telehealth · (805) 469-8900
Dr. Christopher Romberg, MD
Cameron Park, CA · $98 in drug and device payments (2025) · (530) 626-2611
Dr. Majd Michael, M.D.
Cameron Park, CA · $186 in drug and device payments (2025) · Telehealth · (832) 712-7053
Dr. Matthew Cole, M.D., M.P.H.
Cameron Park, CA · $123 in drug and device payments (2025) · Telehealth · (530) 672-7060
Dr. Russell Jacoby, MD
Cameron Park, CA · No drug or device payments recorded (2025) · (530) 672-2701
Dr. Wai Kan Chiu, M.D., PH.D.
Cameron Park, CA · $174 in drug and device payments (2025) · Telehealth · (530) 626-2611

Conditions Gastroenterology providers in California commonly treat

Patients often search by condition rather than specialty. These are conditions typically managed by Gastroenterology providers. Individual practices vary, so confirm with the provider before booking.

Common questions

How many Gastroenterology providers are in California?

There are 2,135 Gastroenterology providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.

Do Gastroenterology providers in California offer telehealth?

Yes. 918 of the 2,135 Gastroenterology providers in California (about 43%) report offering telehealth services in CMS data.

Which cities in California have the most Gastroenterology providers?

Los Angeles (195), San Diego (126), San Francisco (103) have the highest concentration of Gastroenterology providers in California.

How many Gastroenterology providers in California received drug or device company payments?

1,329 of 2,135 Gastroenterology providers in California (62%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.

What conditions do Gastroenterology providers in California treat?

Gastroenterology providers commonly treat acid reflux, IBS, Crohn disease, ulcerative colitis, celiac disease 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 Gastroenterologists in California work in independent practices or large health systems?

Among 1,498 Gastroenterologists in California enrolled in Medicare, 21% bill through a solo or small practice with fewer than 10 clinicians, 8% through a mid-size group of 10 to 99, and 71% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.

Which hospitals do Gastroenterologists in California work at?

According to CMS facility affiliation records, the California hospitals where the most Gastroenterologists hold privileges are Stanford Health Care in Stanford; Ronald Reagan UCLA Medical Center in Los Angeles; Cedars-Sinai Medical Center in Los Angeles.

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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 Gastroenterology in California? Get featured.