Quick answers
- Which hospitals does Mark Demar work at?
- Medicare's official clinician data lists Mark Demar at 2 hospitals: Banner Churchill Community Hospital and Northeastern Nevada Regional Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark Demar see patients?
- Medicare's clinician data lists 3 practice locations, including Elko, NV and Fallon, NV. Call before your visit to confirm the address.
- What is Mark Demar's specialty?
- Medicare lists General Surgery as the primary specialty.
- Does Mark Demar accept Medicare assignment?
- Yes. Medicare's clinician data says Mark Demar 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 Demar?
- (775) 777-2061, as listed in official Medicare / NPI Registry data.
- What is Mark Demar's NPI number?
- 1821050253. 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 Demar works
Medicare's Facility Affiliation Data lists Mark Demar at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Banner Churchill Community HospitalFallon, NV · Critical Access Hospital · CCN 291313
- Northeastern Nevada Regional HospitalElko, NV · Acute Care Hospital · CCN 290008
Practice locations
Addresses where Mark Demar is enrolled with Medicare (CMS data updated 2026-10-02).
- 1995 Errecart Blvd, Suite 102Elko, NV 89801 (775) 777‑2061
- 801 E Williams AveFallon, NV 89406
- 801 E Williams Ave, Suite 2207 2208 3301 3309 3310Fallon, NV 89406 (775) 867‑7701
Group practices
Medicare enrollment lists Mark Demar as a member of these groups (CMS data updated 2026-10-02).
- Banner Churchill Community Hospital24 clinicians in the group
- Northeastern Nevada Physician Practices LLC21 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in Elko
Clinicians with the same Medicare primary specialty in Elko, NV — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Cincinnati College Of Medicine |
| Graduation year | 1991 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1821050253 |
| 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