Quick answers
- Which hospitals does Marek Marcinkiewicz work at?
- Medicare's official clinician data lists Marek Marcinkiewicz at 3 hospitals: Flagstaff Medical Center, Fort Defiance Indian Hospital and San Juan Regional Medical Center Inc. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Marek Marcinkiewicz see patients?
- Medicare's clinician data lists 2 practice locations, including Fort Defiance, AZ. Call before your visit to confirm the address.
- What is Marek Marcinkiewicz's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Marek Marcinkiewicz accept Medicare assignment?
- Yes. Medicare's clinician data says Marek Marcinkiewicz 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 Marek Marcinkiewicz offer telehealth?
- Medicare's clinician data says Marek Marcinkiewicz offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Marek Marcinkiewicz?
- (928) 729-8082, as listed in official Medicare / NPI Registry data.
- What is Marek Marcinkiewicz's NPI number?
- 1891951828. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Marek Marcinkiewicz works
Medicare's Facility Affiliation Data lists Marek Marcinkiewicz at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Flagstaff Medical CenterFlagstaff, AZ · Acute Care Hospital · CCN 030023
- Fort Defiance Indian HospitalFt. Defiance, AZ · Acute Care Hospital · CCN 030071
- San Juan Regional Medical Center IncFarmington, NM · Acute Care Hospital · CCN 320005
Practice locations
Addresses where Marek Marcinkiewicz is enrolled with Medicare (CMS data updated 2026-10-02).
- Corner of Route N12 and N7, Fdihb Inc.Fort Defiance, AZ 86504 (928) 729‑8082
- PO Box, Suite 649Fort Defiance, AZ 86504
Group practices
Medicare enrollment lists Marek Marcinkiewicz as a member of this group (CMS data updated 2026-10-02).
- The Fort Defiance Indian Hospital Board, Incorporation151 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Fort Defiance
Clinicians with the same Medicare primary specialty in Fort Defiance, AZ — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1988 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1891951828 |
| 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