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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. Prista Charuworn, MD
Stanford, CA · No drug or device payments recorded (2025) · (650) 723-6661
Dr. Rahul Verma, MD
Stanford, CA · $97 in drug and device payments (2025) · Telehealth · (650) 723-4000
Dr. Robert Huang, M.D.
Stanford, CA · $322 in drug and device payments (2025) · Telehealth · (650) 498-4560
Dr. Robert Lerrigo, M.D.
Stanford, CA · No drug or device payments recorded (2025) · Telehealth · (650) 725-6511
Dr. Samuel Marcus, M.D.
Stanford, CA · $1,211 in drug and device payments (2025) · Telehealth · (650) 723-4000
Dr. Sarah Streett, MD
Stanford, CA · $29 in drug and device payments (2025) · Telehealth · (650) 723-4000
Dr. Sean Spencer, MD, PHD
Stanford, CA · $91 in drug and device payments (2025) · Telehealth · (650) 723-4000
Dr. Shai Friedland, M.D.
Stanford, CA · $74,594 in drug and device payments (2025) · Telehealth · (650) 723-4000
Dr. Sharareh Moraveji, M.D.
Stanford, CA · $119 in drug and device payments (2025) · Telehealth · (650) 723-4000
Dr. Sidhartha Sinha, MD
Stanford, CA · No drug or device payments recorded (2025) · Telehealth · (650) 723-4000
Dr. Smit Deliwala, MD
Stanford, CA · $2,433 in drug and device payments (2025) · Telehealth · (650) 723-4000
Dr. Stephan Rogalla, MD
Stanford, CA · No drug or device payments recorded (2025) · (650) 723-8000
Dr. Subhas Banerjee, MD
Stanford, CA · $414 in drug and device payments (2025) · Telehealth · (650) 723-4000
Dr. Sunny Sandhu, MD
Stanford, CA · $709 in drug and device payments (2025) · Telehealth · (650) 723-4000
Dr. Uri Ladabaum, MD
Stanford, CA · $226 in drug and device payments (2025) · Telehealth · (650) 723-4000
Dr. Vijay Pottathil, M.D.
Stanford, CA · No drug or device payments recorded (2025) · (650) 723-4000
Dr. Walter Park, M.D.
Stanford, CA · $86,880 in drug and device payments (2025) · Telehealth · (650) 723-4000
Dr. Yan Jiang, MD
Stanford, CA · No drug or device payments recorded (2025) · Telehealth · (650) 723-4000
Dr. Yi Jiang, MD
Stanford, CA · $29 in drug and device payments (2025) · Telehealth · (650) 723-4000
Dr. Ashwini Anumandla, M.D.
Stockton, CA · $15 in drug and device payments (2025) · (209) 957-7050
Dr. David Cornish, MD
Stockton, CA · $17 in drug and device payments (2025) · (209) 476-2000
Dr. George Rishwain, M.D.
Stockton, CA · No drug or device payments recorded (2025) · (209) 475-5500
Dr. Gurtej Malhi, M.D
Stockton, CA · $67 in drug and device payments (2025) · Telehealth · (209) 546-5200
Dr. Iftikhar Malik, M.D.
Stockton, CA · No drug or device payments recorded (2025) · Telehealth · (209) 941-0791
Dr. Khaleeq Siddiqui, M.D.
Stockton, CA · $378 in drug and device payments (2025) · Telehealth · (209) 546-5200
Dr. Lakshma Tiyyagura, MD
Stockton, CA · $2,121 in drug and device payments (2025) · (209) 466-4685
Dr. Sandar Linn, MD
Stockton, CA · No drug or device payments recorded (2025) · Telehealth · (209) 955-3066
Dr. Sohan Mahil, M.D.
Stockton, CA · No drug or device payments recorded (2025) · (209) 957-7050
Dr. John Wood
Sunnyvale, CA · No drug or device payments recorded (2025) · (408) 739-6000
Dr. Bahman Falakassa, M.D
Sun Valley, CA · $136 in drug and device payments (2025) · (818) 768-3000
Dr. Jeng Yuh, M.D.
Sylmar, CA · No drug or device payments recorded (2025) · (818) 364-3205
Dr. Lisa Toy, M.D.
Sylmar, CA · $151 in drug and device payments (2025) · (818) 364-4627
Dr. Long Le
Sylmar, CA · $478 in drug and device payments (2025) · Telehealth · (818) 364-1555
Dr. Richard Hu, MD
Sylmar, CA · $186 in drug and device payments (2025) · (818) 364-3205
Dr. Ronald Koretz, MD
Sylmar, CA · No drug or device payments recorded (2025) · (818) 364-3205
Dr. Irving Klasky, M.D.
Tarzana, CA · No drug or device payments recorded (2025) · (818) 708-6000
Dr. Jim Amerian, M.D.
Tarzana, CA · $755 in drug and device payments (2025) · Telehealth · (818) 708-6000
Dr. Kenneth Hepps, MD
Tarzana, CA · $3,266 in drug and device payments (2025) · Telehealth · (818) 996-4796
Dr. Lori Kam, M.D.
Tarzana, CA · No drug or device payments recorded (2025) · (818) 708-6000
Dr. Lucien Jacobs, M.D.
Tarzana, CA · No drug or device payments recorded (2025) · (818) 708-6070
Dr. Maurice Gourdji, M.D.
Tarzana, CA · $2,513 in drug and device payments (2025) · Telehealth · (818) 708-6070
Dr. Michael Madievsky, MD
Tarzana, CA · $4,141 in drug and device payments (2025) · Telehealth · (818) 996-4796
Dr. Neil Fagen, MD
Tarzana, CA · No drug or device payments recorded (2025) · (818) 996-4796
Dr. Sheldon Getzug, M.D.
Tarzana, CA · No drug or device payments recorded (2025) · (818) 708-6000
Dr. Indraneel Chakrabarty, M.D.
Temecula, CA · $4,218 in drug and device payments (2025) · Telehealth · (951) 501-4200
Dr. Rajesh Veluvolu, MD
Temecula, CA · $814 in drug and device payments (2025) · Telehealth · (951) 501-4200
Dr. Sajni Amin, MD
Temecula, CA · $738 in drug and device payments (2025) · (951) 600-4337
Dr. Sathish Subramanian, MD, PHD
Temecula, CA · $272 in drug and device payments (2025) · Telehealth · (951) 501-4200
Dr. Ken Nguyen, M.D.
Temple City, CA · $30,256 in drug and device payments (2025) · Telehealth · (626) 898-4560
Dr. Tien-chun Chen, MD
Temple City, CA · $1,431 in drug and device payments (2025) · Telehealth · (626) 898-4560

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.

Related reading on HealthcareDiscovery.AI

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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.