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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. Bassem Elgohary, M.D.
Huntington Beach, CA · $153 in drug and device payments (2025) · (714) 483-2566
Dr. Jay Diliberto, MD
Huntington Beach, CA · $22 in drug and device payments (2025) · (714) 596-2800
Dr. Phiet Phung, MD
Huntington Beach, CA · No drug or device payments recorded (2025) · (714) 968-0068
Dr. Pundari Chemitiganti, M.D.
Huntington Beach, CA · $29 in drug and device payments (2025) · (714) 843-6789
Dr. Sirus Farivar, MD
Huntington Beach, CA · $497 in drug and device payments (2025) · (714) 841-7878
Dr. Tu Tran, M.D.
Huntington Park, CA · No drug or device payments recorded (2025) · (323) 588-9748
Dr. Eugene Christian, EUGENE CHRISTIAN
Inglewood, CA · No drug or device payments recorded (2025) · (310) 671-3328
Dr. Mark Lott, M.D.
Inglewood, CA · $2,157 in drug and device payments (2025) · Telehealth · (310) 671-7010
Dr. Stephen Parnell, M.D.
Inglewood, CA · $3,614 in drug and device payments (2025) · Telehealth · (310) 671-7010
Dr. Steven Lerner, M.D.
Inglewood, CA · $2,708 in drug and device payments (2025) · (310) 671-7010
Dr. Ardalan Babaknia, MD
Irvine, CA · $628 in drug and device payments (2025) · (949) 753-8844
Dr. David Choi, D.O.
Irvine, CA · $3,600 in drug and device payments (2025) · (949) 612-9090
Dr. David Kaufman, D.O.
Irvine, CA · $912 in drug and device payments (2025) · Telehealth · (949) 727-2035
Dr. Fang Yu
Irvine, CA · $612 in drug and device payments (2025) · Telehealth · (949) 679-0000
Dr. Heba Ashraf, MD
Irvine, CA · $2,953 in drug and device payments (2025) · (949) 258-7229
Dr. Henry Niho, M.D.
Irvine, CA · No drug or device payments recorded (2025) · (949) 932-2604
Dr. Herbert Lee, MD
Irvine, CA · $7,337 in drug and device payments (2025) · Telehealth · (949) 552-9628
Dr. Hooshang Meshkinpour, M.D.
Irvine, CA · $660 in drug and device payments (2025) · Telehealth · (949) 417-1100
Dr. John Hoefs, MD
Irvine, CA · No drug or device payments recorded (2025) · (949) 748-7474
Dr. Jun-ichi Ohara, M.D., PH.D.
Irvine, CA · No drug or device payments recorded (2025) · Telehealth · (949) 654-8963
Dr. Kong Peng Yap, M.D.
Irvine, CA · No drug or device payments recorded (2025) · (949) 825-5198
Dr. Lance Uradomo, M.D.
Irvine, CA · $328 in drug and device payments (2025) · Telehealth · (949) 671-4673
Dr. Lino Deguzman, M.D.
Irvine, CA · $4,824 in drug and device payments (2025) · (949) 727-1232
Dr. Omeed Alipour, M.D.
Irvine, CA · $694 in drug and device payments (2025) · Telehealth · (800) 826-4673
Dr. Paul Lee, MD
Irvine, CA · $3,033 in drug and device payments (2025) · (949) 612-9090
Dr. Rashmi Kumar, MD
Irvine, CA · $37,880 in drug and device payments (2025) · Telehealth · (949) 557-0251
Dr. Rochelle Wong, MD
Irvine, CA · $270 in drug and device payments (2025) · (949) 612-9090
Dr. Shahrooz Bemanian
Irvine, CA · $1,328 in drug and device payments (2025) · (949) 612-9090
Dr. Shireena Desai, M.D.
Irvine, CA · No drug or device payments recorded (2025) · (949) 932-5000
Dr. Timothy Zaki, MD
Irvine, CA · $1,358 in drug and device payments (2025) · (949) 612-9090
Dr. Victor Yu, M.D.
Irvine, CA · $2,646 in drug and device payments (2025) · (949) 612-9090
Dr. You-jen Chou, MD
Irvine, CA · $1,371 in drug and device payments (2025) · Telehealth · (800) 826-4673
Dr. Shanti Siddiqui, M.D.
Jackson, CA · No drug or device payments recorded (2025) · (209) 257-0311
Dr. Dina Ezzeddine, M.D.
Lafayette, CA · $126 in drug and device payments (2025) · (701) 530-6000
Dr. Gail Schoenau, M.D.
Laguna Beach, CA · No drug or device payments recorded (2025) · Telehealth · (949) 499-8233
Dr. Barry Donner, MD
Laguna Hills, CA · $1,290 in drug and device payments (2025) · Telehealth · (949) 770-7163
Dr. Benjamin Weinberg, MD
Laguna Hills, CA · $1,480 in drug and device payments (2025) · Telehealth · (657) 241-4280
Dr. Catherine Ngo, M.D.
Laguna Hills, CA · $1,205 in drug and device payments (2025) · Telehealth · (949) 770-7163
Dr. Dalia Al-mudallal, M.D.
Laguna Hills, CA · $1,814 in drug and device payments (2025) · Telehealth · (949) 452-3933
Dr. David Hatoff, MD
Laguna Hills, CA · $125 in drug and device payments (2025) · (949) 770-7691
Dr. Farid Jalali, M.D.
Laguna Hills, CA · $131 in drug and device payments (2025) · (949) 448-0656
Dr. James Trenbeath, MD
Laguna Hills, CA · No drug or device payments recorded (2025) · (949) 770-7163
Dr. Manish Shrestha, M.D.
Laguna Hills, CA · $702 in drug and device payments (2025) · (949) 448-0656
Dr. Priya Sharma
Laguna Hills, CA · $66 in drug and device payments (2025) · Telehealth · (949) 334-8270
Dr. Rose Codini, M.D.
Laguna Hills, CA · No drug or device payments recorded (2025) · (949) 452-3933
Dr. Scott Lee, M.D.
Laguna Hills, CA · $1,413 in drug and device payments (2025) · Telehealth · (657) 241-4280
Dr. Shazia Ali, M.D.
Laguna Hills, CA · $483 in drug and device payments (2025) · Telehealth · (949) 334-8270
Dr. Theodore Sy, MD
Laguna Hills, CA · $1,287 in drug and device payments (2025) · Telehealth · (949) 448-0656
Dr. Ahmad Mansour, MD
La Jolla, CA · $1,250 in drug and device payments (2025) · Telehealth · (858) 824-4151
Dr. Andrew Mayer, MD
La Jolla, CA · $306 in drug and device payments (2025) · Telehealth · (858) 453-5200

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.