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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. Somaya Albhaisi, MBBCH, MPH
Los Angeles, CA · $101 in drug and device payments (2025) · (323) 409-7995
Dr. Stephen Kim, MD
Los Angeles, CA · $8,506 in drug and device payments (2025) · Telehealth · (310) 208-5400
Dr. Stephen Pandol, MD
Los Angeles, CA · $11,735 in drug and device payments (2025) · Telehealth · (310) 478-3711
Dr. Steven-huy Han, MD
Los Angeles, CA · $79,225 in drug and device payments (2025) · Telehealth · (310) 794-7783
Dr. Suk Seo, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 301-8708
Dr. Taaj Raasikh, MD
Los Angeles, CA · $142 in drug and device payments (2025) · (323) 442-5100
Dr. Takeshi Saito, M.D., PHD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 442-5100
Dr. Terri Getzug, MD
Los Angeles, CA · $681 in drug and device payments (2025) · Telehealth · (310) 825-0631
Dr. Thomas Kovacs, MD
Los Angeles, CA · $232 in drug and device payments (2025) · (310) 825-1597
Dr. Thomas Kun, M.D.
Los Angeles, CA · $31 in drug and device payments (2025) · (310) 738-1054
Dr. Thomas Teller, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 783-4011
Dr. Thomas Wang, MD
Los Angeles, CA · $3,968 in drug and device payments (2025) · Telehealth · (323) 442-5100
Dr. Thomas Zarchy, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 442-5100
Dr. Timnit Tekeste, M.D.
Los Angeles, CA · $2,162 in drug and device payments (2025) · Telehealth · (206) 226-6668
Dr. Venkataraman Muthusamy, MD
Los Angeles, CA · $54,202 in drug and device payments (2025) · Telehealth · (310) 825-1597
Dr. Vijayamalini Pampati, DO
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 783-4011
Dr. Vijay Pandyarajan, MD, PHD
Los Angeles, CA · $33 in drug and device payments (2025) · Telehealth · (310) 423-3870
Dr. Wei-chung Chen, MD
Los Angeles, CA · $735 in drug and device payments (2025) · Telehealth · (323) 442-5100
Dr. Wendy Ho, MD
Los Angeles, CA · $665 in drug and device payments (2025) · Telehealth · (310) 206-0644
Dr. Yin Chan, MD
Los Angeles, CA · $67 in drug and device payments (2025) · Telehealth · (310) 423-6082
Dr. Yong Lee, M.D.
Los Angeles, CA · $14 in drug and device payments (2025) · (323) 731-0681
Dr. Bassam Saffouri, MD
Los Gatos, CA · No drug or device payments recorded (2025) · (408) 370-7801
Dr. Michelle Nguyen, MD
Los Gatos, CA · $8,391 in drug and device payments (2025) · Telehealth · (408) 471-2222
Dr. Tejinder Kalra, M.D.
Los Gatos, CA · $16 in drug and device payments (2025) · (669) 294-8800
Dr. Ambreen Khurshid, M.D.
Madera, CA · $161 in drug and device payments (2025) · (559) 637-4000
Dr. Kalyani Shah, M.D.
Madera, CA · No drug or device payments recorded (2025) · (559) 675-5501
Dr. Naeem Akhtar, MD
Madera, CA · $2,004 in drug and device payments (2025) · (559) 673-4000
Dr. Bhupinder Romana, MD
Manteca, CA · $48 in drug and device payments (2025) · (209) 405-2406
Dr. Howard Marks, M.D.
Manteca, CA · No drug or device payments recorded (2025) · (209) 239-0515
Dr. Ismail Wadiwala, MD
Manteca, CA · No drug or device payments recorded (2025) · (209) 823-1121
Dr. Ripudaman Beniwal, MD
Manteca, CA · $15 in drug and device payments (2025) · Telehealth · (209) 239-0515
Dr. Albert Palitz, MD
Martinez, CA · No drug or device payments recorded (2025) · (925) 372-1000
Dr. Arati Pratap, M.D.
Martinez, CA · No drug or device payments recorded (2025) · (617) 935-1383
Dr. Paul Reif, MD
Martinez, CA · No drug or device payments recorded (2025) · (925) 370-5110
Dr. Randall Lee, MD
Martinez, CA · $287 in drug and device payments (2025) · (925) 372-2000
Dr. Terence Heywood, MD
Martinez, CA · No drug or device payments recorded (2025) · (925) 372-1000
Dr. Homayoun Shojamanesh, M.D.
Mather, CA · $53 in drug and device payments (2025) · (916) 366-5339
Dr. Sarah Flores, M.D., M.P.H.
Mather, CA · $899 in drug and device payments (2025) · Telehealth · (916) 366-5339
Dr. Virmeet Singh, M.D.
Mather, CA · No drug or device payments recorded (2025) · (916) 366-5339
Dr. Harvey Young, M.D.
Menlo Park, CA · No drug or device payments recorded (2025) · Telehealth · (650) 324-8881
Dr. Mary Chan, MD
Menlo Park, CA · No drug or device payments recorded (2025) · (650) 498-6500
Dr. Sinda Mein, MD
Menlo Park, CA · $66 in drug and device payments (2025) · Telehealth · (650) 498-6652
Dr. Tu Nguyen, MD
Menlo Park, CA · $31 in drug and device payments (2025) · Telehealth · (650) 498-6500
Dr. Lillian Choi, MD
Merced, CA · $227 in drug and device payments (2025) · (209) 720-7183
Dr. Madhu Kris, M.D.
Merced, CA · $369 in drug and device payments (2025) · (209) 384-3115
Dr. Sivakumar Munnangi, M.D.
Merced, CA · $1,640 in drug and device payments (2025) · Telehealth · (209) 724-9900
Dr. Claudio Rivera, MD, MPH
Mission Hills, CA · $340 in drug and device payments (2025) · (818) 838-4500
Dr. Jihad Batah, MD
Mission Hills, CA · No drug or device payments recorded (2025) · (818) 365-9531
Dr. Kathan Chintamaneni, MD
Mission Hills, CA · $23 in drug and device payments (2025) · Telehealth · (262) 389-8441
Dr. Magued Beshay, MD
Mission Hills, CA · $719 in drug and device payments (2025) · (818) 837-5776

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.