Quick answers
- Which hospitals does William C. Byer work at?
- Medicare's official clinician data lists William C. Byer at 2 hospitals: Mount Desert Island Hospital and Mountain View Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William C. Byer see patients?
- Medicare's clinician data lists 3 practice locations, including Bar Harbor, ME and Las Cruces, NM. Call before your visit to confirm the address.
- What is William C. Byer's specialty?
- Medicare lists Certified Registered Nurse Anesthetist (CRNA) as the primary specialty.
- Does William C. Byer accept Medicare assignment?
- Yes. Medicare's clinician data says William C. Byer 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 William C. Byer?
- (575) 556-7455, as listed in official Medicare / NPI Registry data.
- What is William C. Byer's NPI number?
- 1285921403. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where William C. Byer works
Medicare's Facility Affiliation Data lists William C. Byer at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mount Desert Island HospitalBar Harbor, ME · Critical Access Hospital · CCN 201304
- Mountain View Regional Medical CenterLas Cruces, NM · Acute Care Hospital · CCN 320085
Practice locations
Addresses where William C. Byer is enrolled with Medicare (CMS data updated 2026-10-02).
- 10 Wayman LnBar Harbor, ME 04609
- 4311 E Lohman AveLas Cruces, NM 88011 (575) 556‑7455
- 4351 E Lohman Ave, Suite 102Las Cruces, NM 88011 (575) 532‑3300
Group practices
Medicare enrollment lists William C. Byer as a member of these groups (CMS data updated 2026-10-02).
- Las Cruces HB Medical Services LLC157 clinicians in the group
- Mount Desert Island Hospital65 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), Maine →
Other nurse anesthetists in Bar Harbor
Clinicians with the same Medicare primary specialty in Bar Harbor, ME — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| Graduation year | 2011 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1285921403 |
| 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