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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. Michael Udkow, MD
Oakland, CA · No drug or device payments recorded (2025) · (510) 752-1000
Dr. Mitchell Liverant, M.D.
Oakland, CA · No drug or device payments recorded (2025) · Telehealth · (646) 580-8292
Dr. Neil Stollman, MD
Oakland, CA · $1,947 in drug and device payments (2025) · Telehealth · (510) 444-3297
Dr. Paul Chard, MD PHD
Oakland, CA · $869 in drug and device payments (2025) · (510) 444-3297
Dr. Ralph Peterson, MD
Oakland, CA · $11,902 in drug and device payments (2025) · Telehealth · (510) 562-7467
Dr. Ronald Adler, MD
Oakland, CA · No drug or device payments recorded (2025) · (510) 437-4323
Dr. Sanya Wadhwa, M.D.
Oakland, CA · $2,368 in drug and device payments (2025) · (510) 444-3297
Dr. Sassan Pazirandeh, MD
Oakland, CA · No drug or device payments recorded (2025) · (510) 752-1000
Dr. Silvia Villagomez, MD
Oakland, CA · $1,742 in drug and device payments (2025) · Telehealth · (510) 444-3297
Dr. Stephanie Santos, MD
Oakland, CA · No drug or device payments recorded (2025) · Telehealth · (510) 752-1000
Dr. Stephanie Yan, MD
Oakland, CA · No drug or device payments recorded (2025) · Telehealth · (916) 973-6961
Dr. Susie Cohn, MD
Oakland, CA · $3,164 in drug and device payments (2025) · Telehealth · (510) 444-3297
Dr. Thomas Hargrave, MD
Oakland, CA · No drug or device payments recorded (2025) · (510) 444-3297
Dr. Zealous Wiley, MD
Oakland, CA · No drug or device payments recorded (2025) · (510) 444-3297
Dr. Liberacion Albinda, M.D.
Oakley, CA · No drug or device payments recorded (2025) · (925) 783-4305
Dr. Behnam Moein Jahromi, M.D.
Oceanside, CA · $510 in drug and device payments (2025) · Telehealth · (760) 704-5870
Dr. Christopher Devereaux, M.D.
Oceanside, CA · $2,587 in drug and device payments (2025) · Telehealth · (760) 724-8782
Dr. Hellen Chiao, MD
Oceanside, CA · $2,306 in drug and device payments (2025) · Telehealth · (760) 724-8782
Dr. Javaid Shad, M.D.
Oceanside, CA · $1,397 in drug and device payments (2025) · Telehealth · (760) 724-8782
Dr. Matthew Viernes, M.D.
Oceanside, CA · $2,393 in drug and device payments (2025) · Telehealth · (760) 724-8782
Dr. Mazer Ally, M.D.
Oceanside, CA · $66,212 in drug and device payments (2025) · Telehealth · (760) 704-5870
Dr. Megan Novo, MD
Oceanside, CA · $2,047 in drug and device payments (2025) · Telehealth · (760) 724-8782
Dr. Michael Kurtz, M.D.
Oceanside, CA · No drug or device payments recorded (2025) · (760) 724-8782
Dr. Michael Shim, M.D.
Oceanside, CA · $2,555 in drug and device payments (2025) · Telehealth · (760) 724-8782
Dr. Alaa Abousaif, MD
Orange, CA · $13,202 in drug and device payments (2025) · Telehealth · (714) 835-7700
Dr. Alexander Jahng, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 880-7812
Dr. Anoushka Dua, MD
Orange, CA · $400 in drug and device payments (2025) · (714) 456-8888
Dr. Avni Jain, MD, FRCPC
Orange, CA · $3,338 in drug and device payments (2025) · (714) 456-2249
Dr. Beshoy Yanny, M.D.
Orange, CA · $35,129 in drug and device payments (2025) · Telehealth · (714) 456-8888
Dr. Carol Monis
Orange, CA · $116 in drug and device payments (2025) · (714) 456-8888
Dr. C Gregory Albers, MD
Orange, CA · $48,303 in drug and device payments (2025) · Telehealth · (714) 456-8978
Dr. Christina Ling, M.D.
Orange, CA · $114 in drug and device payments (2025) · Telehealth · (888) 717-4463
Dr. Christopher Paiji, MD
Orange, CA · $8,942 in drug and device payments (2025) · Telehealth · (562) 234-3765
Dr. David Lee, M.D. M.P.H.
Orange, CA · $381 in drug and device payments (2025) · (714) 456-6745
Dr. David Stanton, M.D.
Orange, CA · $440 in drug and device payments (2025) · Telehealth · (714) 835-5100
Dr. David Veal
Orange, CA · No drug or device payments recorded (2025) · (714) 456-6745
Dr. Elliot Yu, M.D.
Orange, CA · $1,358 in drug and device payments (2025) · Telehealth · (714) 456-8888
Dr. Frances Dang, MD
Orange, CA · $17,870 in drug and device payments (2025) · Telehealth · (888) 717-4463
Dr. George Holman, MD
Orange, CA · $391 in drug and device payments (2025) · (714) 835-7700
Dr. Haig Najarian, MD
Orange, CA · $2,019 in drug and device payments (2025) · Telehealth · (714) 835-7700
Dr. Hardeep Singh, M.D.
Orange, CA · $2,795 in drug and device payments (2025) · Telehealth · (714) 835-7700
Dr. Jaehyun Kim, MD
Orange, CA · $95 in drug and device payments (2025) · Telehealth · (714) 456-8888
Dr. James Lee, MD
Orange, CA · $2,769 in drug and device payments (2025) · Telehealth · (714) 835-7700
Dr. Jason Samarasena, M.D.
Orange, CA · $120,664 in drug and device payments (2025) · Telehealth · (714) 456-6693
Dr. Jessica Hung, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 937-9400
Dr. John Lee, MD
Orange, CA · $34 in drug and device payments (2025) · Telehealth · (714) 456-8978
Dr. Jonathan Skupsky, MD/PHD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-7890
Dr. Jose Roque, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 937-9400
Dr. Joshua Kwon
Orange, CA · $4,059 in drug and device payments (2025) · (714) 456-6745
Dr. Kashyap Trivedi, MD
Orange, CA · $2,051 in drug and device payments (2025) · Telehealth · (714) 456-8888

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.