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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. Marc Makhani, M.D.
Los Angeles, CA · $2,557 in drug and device payments (2025) · Telehealth · (310) 657-5244
Dr. Mark Ovsiowitz, MD
Los Angeles, CA · $206 in drug and device payments (2025) · Telehealth · (310) 825-9711
Dr. Mark Pimentel, M.D.
Los Angeles, CA · $4,558 in drug and device payments (2025) · Telehealth · (310) 423-6143
Dr. Marvin Perer, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 440-0375
Dr. Maurice Elihu, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 551-9900
Dr. Mehdi Mohamadnejad
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 267-9659
Dr. Mehrdad Vosoghi, M.D.
Los Angeles, CA · $1,043 in drug and device payments (2025) · Telehealth · (310) 556-7747
Dr. Michael Kline, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 442-5100
Dr. Michael Pimienta, MD
Los Angeles, CA · $1,775 in drug and device payments (2025) · (213) 977-4156
Dr. Minh Do, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 206-0449
Dr. Mitchell Spirt, M.D.
Los Angeles, CA · $1,025 in drug and device payments (2025) · Telehealth · (310) 551-0082
Dr. Mordecai Solomon, D.O.
Los Angeles, CA · $44 in drug and device payments (2025) · (213) 440-2040
Dr. Neel Mann, M.D.
Los Angeles, CA · $200 in drug and device payments (2025) · Telehealth · (323) 442-5100
Dr. Neil Sevy, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 857-2000
Dr. Nicholas Karyotakis, MD
Los Angeles, CA · $1,707 in drug and device payments (2025) · Telehealth · (310) 282-0525
Dr. Nipaporn Pichetshote, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (323) 442-5100
Dr. Nirupama Bonthala, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 208-5400
Dr. Noor Ali
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 783-0141
Dr. Oliver Goldsmith, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (323) 857-2000
Dr. Parviz Javdan, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 441-2000
Dr. Patrick Chang, MD
Los Angeles, CA · $329 in drug and device payments (2025) · (323) 442-5100
Dr. Patrick Takahashi, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (213) 620-0822
Dr. Paul Leonor, M.D.
Los Angeles, CA · $1,841 in drug and device payments (2025) · (323) 226-7556
Dr. Paul Paik, MD
Los Angeles, CA · $144 in drug and device payments (2025) · (323) 409-1000
Dr. Paul Shao
Los Angeles, CA · $49,233 in drug and device payments (2025) · (626) 226-7096
Dr. Payman Khorrami, MD
Los Angeles, CA · $2,969 in drug and device payments (2025) · Telehealth · (310) 553-5588
Dr. Peter Anton, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 825-1597
Dr. Pilsoo Oh, MD
Los Angeles, CA · $454 in drug and device payments (2025) · Telehealth · (213) 368-0360
Dr. Priyam Tripathi, M.D.
Los Angeles, CA · $1,999 in drug and device payments (2025) · Telehealth · (310) 855-7002
Dr. Pyoung Kwon, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (213) 487-4141
Dr. Rahul Chhablani, MD
Los Angeles, CA · $302 in drug and device payments (2025) · (630) 915-1716
Dr. Rebecca Slomovic, M.D.
Los Angeles, CA · $94 in drug and device payments (2025) · (323) 442-5100
Dr. Richard Aranda, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 825-0631
Dr. Richard Dwyer, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (213) 483-2470
Dr. Robert Brook, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 825-0631
Dr. Rome Jutabha, M.D.
Los Angeles, CA · $154 in drug and device payments (2025) · (323) 442-5100
Dr. Rushabh Modi
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 442-5100
Dr. Sadeea Abbasi, M.D., PH.D.
Los Angeles, CA · $234,604 in drug and device payments (2025) · Telehealth · (323) 226-7556
Dr. Said Rahban, MD
Los Angeles, CA · $56 in drug and device payments (2025) · (323) 852-1751
Dr. Sammy Saab, MD
Los Angeles, CA · $367,988 in drug and device payments (2025) · Telehealth · (310) 794-7783
Dr. Sarah Sheibani, M.D.
Los Angeles, CA · $16,847 in drug and device payments (2025) · Telehealth · (323) 442-5100
Dr. Sarina Lowe, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 208-5400
Dr. Saroja Bangaru, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (323) 442-5100
Dr. Shahid Sial, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 400-4189
Dr. Sharon Kim
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 409-7995
Dr. Shelly Lu, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (323) 442-5100
Dr. Siamak Tabib, M.D.
Los Angeles, CA · $1,056 in drug and device payments (2025) · (310) 652-4472
Dr. Simon Lo, M.D.
Los Angeles, CA · $6,417 in drug and device payments (2025) · Telehealth · (310) 423-6082
Dr. Sivareddy Tegulapalle, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (213) 387-9000
Dr. Sohrab Yamini, M.D.
Los Angeles, CA · $490 in drug and device payments (2025) · (310) 234-6600

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.