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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. Jacqueline Chang, MD
Sacramento, CA · $214 in drug and device payments (2025) · (916) 734-7183
Dr. Jason Guardino, D.O.
Sacramento, CA · No drug or device payments recorded (2025) · (916) 688-6675
Dr. Jeffrey Ko, M.D.
Sacramento, CA · $352 in drug and device payments (2025) · (916) 734-8616
Dr. Jesse Stondell, M.D.
Sacramento, CA · No drug or device payments recorded (2025) · Telehealth · (916) 734-7080
Dr. Joanne Lin, DO
Sacramento, CA · No drug or device payments recorded (2025) · (916) 734-3751
Dr. Johnathan Zhang, MD
Sacramento, CA · $2,179 in drug and device payments (2025) · Telehealth · (916) 733-3370
Dr. John Hata, M.D.
Sacramento, CA · No drug or device payments recorded (2025) · (916) 423-2124
Dr. John Mccracken, MD
Sacramento, CA · No drug or device payments recorded (2025) · Telehealth · (916) 973-5000
Dr. Jonathan Davidson, M.D.
Sacramento, CA · $615 in drug and device payments (2025) · Telehealth · (916) 699-8592
Dr. Jonathan Lin, MD
Sacramento, CA · $98 in drug and device payments (2025) · Telehealth · (916) 784-4000
Dr. Jose Martinez Perez, MD
Sacramento, CA · No drug or device payments recorded (2025) · (916) 734-2737
Dr. Joseph Leung, M.D.
Sacramento, CA · $88 in drug and device payments (2025) · (916) 734-7224
Dr. Joseph Marsano
Sacramento, CA · No drug or device payments recorded (2025) · (916) 734-3751
Dr. Joseph Toth
Sacramento, CA · $122 in drug and device payments (2025) · (916) 734-4597
Dr. Juan Garcia, M.D.
Sacramento, CA · $163 in drug and device payments (2025) · Telehealth · (916) 734-3751
Dr. Kimberly Wong, M.D.
Sacramento, CA · $68 in drug and device payments (2025) · Telehealth · (916) 734-2737
Dr. Kuldeep Tagore, M.D.
Sacramento, CA · $1,563 in drug and device payments (2025) · Telehealth · (916) 734-3759
Dr. Lankai Xu, MD
Sacramento, CA · $122 in drug and device payments (2025) · (916) 734-7183
Dr. Lien Le
Sacramento, CA · No drug or device payments recorded (2025) · Telehealth · (916) 734-3751
Dr. Linda Lee, M.D.
Sacramento, CA · $318 in drug and device payments (2025) · (916) 733-3370
Dr. Loc Ton, M.D.
Sacramento, CA · No drug or device payments recorded (2025) · (916) 688-2000
Dr. Lydia Aye, D.O.
Sacramento, CA · $101 in drug and device payments (2025) · Telehealth · (916) 734-2011
Dr. Manan Jhaveri, MD
Sacramento, CA · No drug or device payments recorded (2025) · Telehealth · (916) 681-6159
Dr. Maneesh Dave, M.D, MPH
Sacramento, CA · $150 in drug and device payments (2025) · Telehealth · (216) 844-1995
Dr. Maria Aguilar
Sacramento, CA · $101 in drug and device payments (2025) · Telehealth · (916) 734-2786
Dr. Mary Pauly, MD
Sacramento, CA · No drug or device payments recorded (2025) · (916) 734-3751
Dr. Michael Lawson, MD
Sacramento, CA · No drug or device payments recorded (2025) · (916) 734-3751
Dr. Micha Rojany, MD
Sacramento, CA · $1,945 in drug and device payments (2025) · Telehealth · (916) 734-3751
Dr. Michelle Lee, D.O.
Sacramento, CA · $1,338 in drug and device payments (2025) · (916) 454-1604
Dr. Nicole Bernstein, MD
Sacramento, CA · No drug or device payments recorded (2025) · (916) 734-3759
Dr. Palaniappan Manickam, M.D., MPH
Sacramento, CA · No drug or device payments recorded (2025) · (916) 733-3370
Dr. Ralph Koldinger, M.D.
Sacramento, CA · No drug or device payments recorded (2025) · (916) 454-0655
Dr. Rana Khan, M.D.
Sacramento, CA · $1,555 in drug and device payments (2025) · Telehealth · (916) 733-3390
Dr. Rekha Cheruvattath, MD
Sacramento, CA · $1,142 in drug and device payments (2025) · Telehealth · (916) 681-6159
Dr. Renee Debose, MD
Sacramento, CA · $1,749 in drug and device payments (2025) · Telehealth · (916) 733-3370
Dr. Robert Levy
Sacramento, CA · No drug or device payments recorded (2025) · (916) 734-7087
Dr. Robert Midgley, MD
Sacramento, CA · No drug or device payments recorded (2025) · (916) 688-2000
Dr. Robert Pecha, MD
Sacramento, CA · $30 in drug and device payments (2025) · (916) 734-3588
Dr. Rupinder Mann, M.D.
Sacramento, CA · $1,341 in drug and device payments (2025) · Telehealth · (916) 734-7183
Dr. Sadha Tivakaran, MD
Sacramento, CA · No drug or device payments recorded (2025) · (916) 973-5000
Dr. Sandy Vien
Sacramento, CA · No drug or device payments recorded (2025) · (916) 734-2011
Dr. Serag Dredar, M.D.
Sacramento, CA · $752 in drug and device payments (2025) · Telehealth · (916) 262-9370
Dr. Shannon Schroeder, MD
Sacramento, CA · $170 in drug and device payments (2025) · Telehealth · (916) 734-2737
Dr. Sheeva Johnson
Sacramento, CA · No drug or device payments recorded (2025) · Telehealth · (916) 688-2000
Dr. Shiro Urayama, M.D.
Sacramento, CA · $5,213 in drug and device payments (2025) · Telehealth · (916) 734-3751
Dr. Shruti Patel, M.D.
Sacramento, CA · $506 in drug and device payments (2025) · Telehealth · (916) 734-2737
Dr. Sirisha Grandhe, M.D.
Sacramento, CA · $995 in drug and device payments (2025) · Telehealth · (916) 734-3751
Dr. Stephanie Mai, M.D.
Sacramento, CA · $618 in drug and device payments (2025) · Telehealth · (916) 262-9370
Dr. Thimmaiah Theethira, M.D.,
Sacramento, CA · $1,524 in drug and device payments (2025) · Telehealth · (916) 661-6000
Dr. Thomas Imperato, M.D.
Sacramento, CA · $207 in drug and device payments (2025) · (916) 423-2124

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.