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Gastroenterology

Veysel Tahan, MD

Works at hospitals in Charleston, WV · Fortuna, CA · Eureka, CA … · West Virginia, California, Ohio

Summary

Veysel Tahan, MD (Gastroenterology) is listed by Medicare at 4 hospitals in Charleston, WV, Fortuna, CA and Eureka, CA and other places. NPI 1700155231. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Veysel Tahan, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

GastroenterologyPrimary specialty
YesAccepts Medicare assignment
33Years since medical school (graduated 1993)
MaleGender (as listed)
Providence Medical FoundationGroup practice (+1 more)

Quick answers

Which hospitals does Veysel Tahan work at?
Medicare's official clinician data lists Veysel Tahan at 4 hospitals: Charleston Area Medical Center, Providence Redwood Memorial Hospital, Providence St Joseph Hospital and Summa Health System. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Veysel Tahan see patients?
Medicare's clinician data lists 2 practice locations, including Eureka, CA and Charleston, WV. Call before your visit to confirm the address.
What is Veysel Tahan's specialty?
Medicare lists Gastroenterology as the primary specialty, and also Internal Medicine.
Does Veysel Tahan accept Medicare assignment?
Yes. Medicare's clinician data says Veysel Tahan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Veysel Tahan?
(714) 449-4800, as listed in official Medicare / NPI Registry data.
What is Veysel Tahan's NPI number?
1700155231. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Veysel Tahan works

Medicare's Facility Affiliation Data lists Veysel Tahan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Veysel Tahan is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Veysel Tahan as a member of these groups (CMS data updated 2026-10-02).

  • Providence Medical Foundation1,466 clinicians in the group
  • Charleston Area Medical Center Inc985 clinicians in the group

Specialties

Find other Gastroenterology doctors in California →

Other gastroenterologists in Eureka

Clinicians with the same Medicare primary specialty in Eureka, CA — not a recommendation.

All gastroenterologists in Eureka →

Clinician information

CredentialMD
Graduation year1993
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1700155231
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians