Quick answers
- Which hospitals does Mark W. Zilkoski work at?
- Medicare's official clinician data lists Mark W. Zilkoski at 3 hospitals: Frances Mahon Deaconess Hospital, Poplar Community Hospital and Trinity Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark W. Zilkoski see patients?
- Medicare's clinician data lists 1 practice location in Wolf Point, MT. Call before your visit to confirm the address.
- What is Mark W. Zilkoski's specialty?
- Medicare lists Family Practice as the primary specialty, and also Geriatric Medicine.
- Does Mark W. Zilkoski accept Medicare assignment?
- Yes. Medicare's clinician data says Mark W. Zilkoski 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 W. Zilkoski?
- (406) 653-6437, as listed in official Medicare / NPI Registry data.
- What is Mark W. Zilkoski's NPI number?
- 1801909080. 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 W. Zilkoski works
Medicare's Facility Affiliation Data lists Mark W. Zilkoski at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Frances Mahon Deaconess HospitalGlasgow, MT · Critical Access Hospital · CCN 271316
- Poplar Community HospitalPoplar, MT · Critical Access Hospital · CCN 271300
- Trinity HospitalWolf Point, MT · Critical Access Hospital · CCN 271341
Practice locations
Addresses where Mark W. Zilkoski is enrolled with Medicare (CMS data updated 2026-10-02).
- 301 Knapp StWolf Point, MT 59201 (406) 653‑6437
Group practices
Medicare enrollment lists Mark W. Zilkoski as a member of this group (CMS data updated 2026-10-02).
- Wolf Point Clinic Association Inc16 clinicians in the group
Specialties
- Family Practiceprimary
- Geriatric Medicinealso
Other family doctors in Montana
Clinicians with the same Medicare primary specialty in Montana — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | State University Of Ny Upstate Medical University |
| Graduation year | 1977 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1801909080 |
| 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