Quick answers
- Which hospitals does Mark E. Brewster work at?
- Medicare's official clinician data lists Mark E. Brewster at 5 hospitals: CHI St Alexius Health, CHI St Alexius Health Dickinson, Garrison Memorial Hospital, McKenzie County Healthcare Systems Inc and Sanford Medical Center Bismarck. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark E. Brewster see patients?
- Medicare's clinician data lists 1 practice location in Watford City, ND. Call before your visit to confirm the address.
- What is Mark E. Brewster's specialty?
- Medicare lists Gastroenterology as the primary specialty, and also Internal Medicine.
- Does Mark E. Brewster accept Medicare assignment?
- Yes. Medicare's clinician data says Mark E. Brewster 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.
- Does Mark E. Brewster offer telehealth?
- Medicare's clinician data says Mark E. Brewster offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Mark E. Brewster?
- (701) 842-3000, as listed in official Medicare / NPI Registry data.
- What is Mark E. Brewster's NPI number?
- 1275773046. 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 E. Brewster works
Medicare's Facility Affiliation Data lists Mark E. Brewster at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- CHI St Alexius HealthBismarck, ND · Acute Care Hospital · CCN 350002
- CHI St Alexius Health DickinsonDickinson, ND · Critical Access Hospital · CCN 351336
- Garrison Memorial HospitalGarrison, ND · Critical Access Hospital · CCN 351303
- McKenzie County Healthcare Systems IncWatford City, ND · Critical Access Hospital · CCN 351302
- Sanford Medical Center BismarckBismarck, ND · Acute Care Hospital · CCN 350015
Practice locations
Addresses where Mark E. Brewster is enrolled with Medicare (CMS data updated 2026-10-02).
- 709 4th Ave NEWatford City, ND 58854 (701) 842‑3000
Group practices
Medicare enrollment lists Mark E. Brewster as a member of this group (CMS data updated 2026-10-02).
- McKenzie County Healthcare Systems Inc66 clinicians in the group
Specialties
- Gastroenterologyprimary
- Internal Medicinealso
Other gastroenterologists in North Dakota
Clinicians with the same Medicare primary specialty in North Dakota — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Wayne State University School Of Medicine |
| Graduation year | 2007 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1275773046 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians