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Internal Medicine - Gastroenterology Specialists in Concord, CA

Browse 5 Internal Medicine - Gastroenterology providers listed in NPPES with a practice address in Concord, California.

5 Healthcare Providers

How Concord compares with the U.S.

5 active clinicians in Internal Medicine - Gastroenterology list a practice address in Concord, CA in the NPI registry.

With fewer than 10 clinicians, rates per 100,000 residents are not reliable enough to compare.

Too few clinicians in Internal Medicine - Gastroenterology in Concord are listed in the CMS Medicare file to report Medicare assignment or telehealth shares.

These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.

Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com ยท Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026.

Showing 1โ€“5 of 5 providers
With recent CMS data first, then Aโ€“Z

Dr. Alex A Aslan , MD

Internal Medicine - Gastroenterology

Active NPI Status
2222 East St Ste 300, Concord, CA 945202066
Phone: 9256827730
NPI Identifier 1538115571
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Dr. Kalyani Maganti , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
2222 East St Ste 300, Concord, CA 945202066
Phone: 9256827730
NPI Identifier 1073533212
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Dr. Tedmond Cw Szeto , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
2700 Grant St Ste 310, Concord, CA 945202279
Phone: 9259879650
NPI Identifier 1508061631
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Dr. David N Varon , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
2485 High School Ave, Suite 306, Concord, CA 945201819
Phone: 9256766622
NPI Identifier 1184702656
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Dr. Richard Augustus Messian , MD

Internal Medicine - Gastroenterology

Active NPI Status
2415 High School Ave, Suite 100, Concord, CA 945201800
Phone: 9256879650
NPI Identifier 1609929751
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Frequently Asked Questions about Internal Medicine - Gastroenterology in Concord

How do I check a Internal Medicine - Gastroenterology practitioner's license?

Each practitioner profile shows the NUCC taxonomy code and any state license number the practitioner reported to NPPES, plus a link to the California licensing board lookup. NPPES entries are self-reported; current license status is published only by the state board.

Why is a practitioner missing from this list?

This list shows NPI records that are active in NPPES. A deactivated NPI keeps its profile with the deactivation date and practice history; find it with the site search by name or NPI number.