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Gastroenterology

Mark Wilson, MD

Works at hospitals in Billings, MT · Hazlehurst, MS · Flowood, MS … · Montana, Mississippi

Summary

Mark Wilson, MD (Gastroenterology) is listed by Medicare at 5 hospitals in Billings, MT, Hazlehurst, MS and Flowood, MS and other places. NPI 1184612368. 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 Mark Wilson, 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
39Years since medical school (graduated 1987)
MaleGender (as listed)
Billings Clinic Specialty Supplies and Services, LLCGroup practice (+2 more)

Quick answers

Which hospitals does Mark Wilson work at?
Medicare's official clinician data lists Mark Wilson at 5 hospitals: Billings Clinic Hospital, Copiah County Medical Center, Merit Health River Oaks, Mississippi Baptist Medical Center and St Dominic-Jackson Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Mark Wilson see patients?
Medicare's clinician data lists 5 practice locations, including Madison, MS, Flowood, MS and Billings, MT. Call before your visit to confirm the address.
What is Mark Wilson's specialty?
Medicare lists Gastroenterology as the primary specialty.
Does Mark Wilson accept Medicare assignment?
Yes. Medicare's clinician data says Mark Wilson 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 Mark Wilson?
(406) 238-2500, as listed in official Medicare / NPI Registry data.
What is Mark Wilson's NPI number?
1184612368. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Mark Wilson works

Medicare's Facility Affiliation Data lists Mark Wilson 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 Mark Wilson is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

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

  • Billings Clinic Specialty Supplies and Services, LLC824 clinicians in the group
  • St. Dominic Medical Associates LLC132 clinicians in the group
  • Gastrointestinal Associates PA46 clinicians in the group

Specialties

Find other Gastroenterology doctors in Mississippi →

Other gastroenterologists in Madison

Clinicians with the same Medicare primary specialty in Madison, MS — not a recommendation.

All gastroenterologists in Madison →

Clinician information

CredentialMD
Graduation year1987
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1184612368
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