Quick answers
- Which hospitals does Oliver Barnyak work at?
- Medicare's official clinician data lists Oliver Barnyak at 3 hospitals: Gifford Medical Center, Mary Hitchcock Memorial Hospital and Mt Ascutney Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Oliver Barnyak see patients?
- Medicare's clinician data lists 3 practice locations, including Lebanon, NH, Windsor, VT and Randolph, VT. Call before your visit to confirm the address.
- What is Oliver Barnyak's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Oliver Barnyak accept Medicare assignment?
- Yes. Medicare's clinician data says Oliver Barnyak 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 Oliver Barnyak?
- (603) 650-5000, as listed in official Medicare / NPI Registry data.
- What is Oliver Barnyak's NPI number?
- 1831693787. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Oliver Barnyak works
Medicare's Facility Affiliation Data lists Oliver Barnyak at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Gifford Medical CenterRandolph, VT · Critical Access Hospital · CCN 471301
- Mary Hitchcock Memorial HospitalLebanon, NH · Acute Care Hospital · CCN 300003
- Mt Ascutney HospitalWindsor, VT · Critical Access Hospital · CCN 471302
Practice locations
Addresses where Oliver Barnyak is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Medical Ctr DrLebanon, NH 03756 (603) 650‑5000
- 289 County RdWindsor, VT 05089
- 44 S Main StRandolph, VT 05060 (802) 728‑7000
Group practices
Medicare enrollment lists Oliver Barnyak as a member of these groups (CMS data updated 2026-10-02).
- Dartmouth-Hitchcock Clinic1,472 clinicians in the group
- Windsor Hospital Corporation61 clinicians in the group
- Gifford Medical Center Inc56 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Lebanon
Clinicians with the same Medicare primary specialty in Lebanon, NH — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Geisel School Of Medicine At Dartmouth |
| Graduation year | 2018 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1831693787 |
| 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