Gastroenterology in Fairfield, California
Data updated monthly · Last refresh September 2026
9 Gastroenterology providers practice in Fairfield. Listings are drawn from federal public records and are not endorsements.
Gastroenterology providers in Fairfield
Listed alphabetically. 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. Frances Lee, DOFairfield, CA · $161 in drug and device payments (2025) · Telehealth ·
(707) 427-4900 Dr. Krishnaswamy Rajan, MDFairfield, CA · No drug or device payments recorded (2025) ·
(707) 399-8019 Dr. Lawrence Chan, M.D.Fairfield, CA · No drug or device payments recorded (2025) · Telehealth ·
(707) 427-4900 Dr. Merle Sogge, M.D.Fairfield, CA · No drug or device payments recorded (2025) · Telehealth ·
(707) 423-2506 Dr. Michael Krier, M.D.Fairfield, CA · $1,691 in drug and device payments (2025) · Telehealth ·
(707) 423-4501 Dr. Mounzer Al Samman, M.D.Fairfield, CA · $1,361 in drug and device payments (2025) · Telehealth ·
(707) 646-3555 Dr. Nazia Hasan, M.D., M.P.H.Fairfield, CA · $2,140 in drug and device payments (2025) ·
(707) 646-3555 Dr. Rashid Iqbal, MDFairfield, CA · $288 in drug and device payments (2025) · Telehealth ·
(707) 399-9200 Dr. Richard Gould, M.D.Fairfield, CA · No drug or device payments recorded (2025) ·
(707) 427-4900 Conditions Gastroenterology providers in Fairfield, 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.
- Acid reflux
- IBS
- Crohn disease
- Ulcerative colitis
- Celiac disease
- Colon cancer screening
Common questions
How many Gastroenterology providers are in Fairfield, California?There are 9 Gastroenterology providers with active NPI records practicing in Fairfield, according to federal NPPES data refreshed monthly.
What conditions do Gastroenterology providers in Fairfield treat?Gastroenterology providers in Fairfield 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 records 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.
All specialties in Fairfield Gastroenterology across California