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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. Tu Tranvan, M.D.
Rosemead, CA · $15 in drug and device payments (2025) · (626) 285-7598
Dr. Anand Madan, M.D.
Roseville, CA · $4,198 in drug and device payments (2025) · Telehealth · (916) 773-6200
Dr. David Pompa, MD
Roseville, CA · $493 in drug and device payments (2025) · Telehealth · (916) 878-4940
Dr. Gerardo Lamiel, MD
Roseville, CA · No drug or device payments recorded (2025) · (916) 784-4000
Dr. Jasbir Rangi, MD
Roseville, CA · $3,719 in drug and device payments (2025) · Telehealth · (916) 773-6200
Dr. John Canio, M.D.
Roseville, CA · $3,067 in drug and device payments (2025) · Telehealth · (916) 773-6200
Dr. Mahmoud Eltorai, MD
Roseville, CA · No drug or device payments recorded (2025) · (916) 784-4000
Dr. Rahul Dhillon, M.D.
Roseville, CA · $645 in drug and device payments (2025) · Telehealth · (916) 262-2370
Dr. Rakesh Parikh, MD
Roseville, CA · $3,435 in drug and device payments (2025) · Telehealth · (916) 773-6200
Dr. Randell Vallero, MD
Roseville, CA · $8,020 in drug and device payments (2025) · Telehealth · (916) 773-6200
Dr. Ronald Hsu, MD
Roseville, CA · $25,951 in drug and device payments (2025) · Telehealth · (916) 773-6200
Dr. Shilpa Lingala, M.D.
Roseville, CA · $227 in drug and device payments (2025) · Telehealth · (916) 878-4940
Dr. Sreepriya Balasubramanian, MD
Roseville, CA · $156 in drug and device payments (2025) · (916) 784-4000
Dr. Theodor Feinstat, MD
Roseville, CA · No drug or device payments recorded (2025) · (916) 773-6200
Dr. Walter Zajac, MD
Roseville, CA · No drug or device payments recorded (2025) · (916) 784-4000
Dr. William Chen, M.D.
Roseville, CA · $72 in drug and device payments (2025) · (916) 878-4940
Dr. Abdul Khaleq, MD
Sacramento, CA · $1,099 in drug and device payments (2025) · Telehealth · (916) 262-9370
Dr. Abhinav Koul, M.D.
Sacramento, CA · $1,086 in drug and device payments (2025) · Telehealth · (916) 734-7183
Dr. Aida Nasirishargh
Sacramento, CA · No drug or device payments recorded (2025) · (916) 734-3759
Dr. Alexander Kuo, MD
Sacramento, CA · $132 in drug and device payments (2025) · (916) 734-2737
Dr. Alexander Miller, MD
Sacramento, CA · $3,604 in drug and device payments (2025) · Telehealth · (916) 734-3751
Dr. Alex Zhornitskiy
Sacramento, CA · $407 in drug and device payments (2025) · Telehealth · (916) 734-7183
Dr. Ali Akram
Sacramento, CA · $358 in drug and device payments (2025) · (916) 734-3751
Dr. Altaf Jan, M.D.
Sacramento, CA · $609 in drug and device payments (2025) · Telehealth · (916) 262-9370
Dr. Amar Al-juburi, M.D.
Sacramento, CA · $219 in drug and device payments (2025) · Telehealth · (916) 734-3751
Dr. Anastasia Waechter, M.D.
Sacramento, CA · No drug or device payments recorded (2025) · Telehealth · (916) 734-7224
Dr. Andrew Chao, M.D.
Sacramento, CA · $232 in drug and device payments (2025) · (916) 734-3751
Dr. Andrew Gilman, M.D.
Sacramento, CA · No drug or device payments recorded (2025) · (916) 734-8616
Dr. Angela Mallory, P.A.
Sacramento, CA · No drug or device payments recorded (2025) · Telehealth · (916) 733-5779
Dr. Antonio Mendoza Ladd, M.D.
Sacramento, CA · $28,336 in drug and device payments (2025) · Telehealth · (916) 734-7224
Dr. Asha Cogdill, M.D.
Sacramento, CA · $17 in drug and device payments (2025) · Telehealth · (916) 734-3759
Dr. Ashwani Kapoor, MD
Sacramento, CA · $974 in drug and device payments (2025) · Telehealth · (916) 733-3370
Dr. Cara Torruellas, M.D.
Sacramento, CA · No drug or device payments recorded (2025) · Telehealth · (916) 734-7080
Dr. Carol Lee, MD
Sacramento, CA · No drug or device payments recorded (2025) · (916) 973-5000
Dr. Cecilia Terrado, M.D.
Sacramento, CA · No drug or device payments recorded (2025) · Telehealth · (916) 734-7224
Dr. Christopher Aoki, M.D.
Sacramento, CA · $1,839 in drug and device payments (2025) · Telehealth · (916) 734-7183
Dr. Christopher Bowlus, M.D.
Sacramento, CA · $20,336 in drug and device payments (2025) · Telehealth · (916) 734-3751
Dr. Cindy Piao, MD
Sacramento, CA · No drug or device payments recorded (2025) · (916) 688-2028
Dr. David Arenson, MD
Sacramento, CA · No drug or device payments recorded (2025) · (916) 454-0655
Dr. De Tan
Sacramento, CA · $1,174 in drug and device payments (2025) · Telehealth · (916) 262-9370
Dr. Don Finegold, MD
Sacramento, CA · No drug or device payments recorded (2025) · (916) 688-2000
Dr. Earl Gear, M.D.
Sacramento, CA · No drug or device payments recorded (2025) · (916) 733-3333
Dr. Edwin Gyorffy, MD
Sacramento, CA · No drug or device payments recorded (2025) · (916) 688-2000
Dr. Eric Mao, M.D.
Sacramento, CA · $112 in drug and device payments (2025) · Telehealth · (916) 734-8616
Dr. Frank Reynolds, M.D.
Sacramento, CA · No drug or device payments recorded (2025) · (916) 733-3333
Dr. Gautam Gandhi, MD
Sacramento, CA · $418 in drug and device payments (2025) · (916) 454-0655
Dr. George Meyer, MD
Sacramento, CA · No drug or device payments recorded (2025) · (916) 973-5000
Dr. Gerald Kohn, MD
Sacramento, CA · No drug or device payments recorded (2025) · (916) 688-2000
Dr. Guinea Fan, M.D.
Sacramento, CA · $25 in drug and device payments (2025) · Telehealth · (916) 734-7224
Dr. Hisham Hussan, M.D.
Sacramento, CA · No drug or device payments recorded (2025) · Telehealth · (916) 734-3759

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.