Quick answers
- Which hospitals does Billy W. Mahaney work at?
- Medicare's official clinician data lists Billy W. Mahaney at 5 hospitals: MaineHealth Maine Medical Center, MaineHealth Mid Coast Hospital, MaineHealth Pen Bay Hospital, MaineHealth Waldo Hospital and Mount Desert Island Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Billy W. Mahaney see patients?
- Medicare's clinician data lists 3 practice locations, including Bar Harbor, ME, Belfast, ME and Brunswick, ME. Call before your visit to confirm the address.
- What is Billy W. Mahaney's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Billy W. Mahaney accept Medicare assignment?
- Yes. Medicare's clinician data says Billy W. Mahaney 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 Billy W. Mahaney?
- (207) 288-5081, as listed in official Medicare / NPI Registry data.
- What is Billy W. Mahaney's NPI number?
- 1457342966. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Billy W. Mahaney works
Medicare's Facility Affiliation Data lists Billy W. Mahaney at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- MaineHealth Maine Medical CenterPortland, ME · Acute Care Hospital · CCN 200009
- MaineHealth Mid Coast HospitalBrunswick, ME · Acute Care Hospital · CCN 200021
- MaineHealth Pen Bay HospitalRockport, ME · Acute Care Hospital · CCN 200063
- MaineHealth Waldo HospitalBelfast, ME · Critical Access Hospital · CCN 201312
- Mount Desert Island HospitalBar Harbor, ME · Critical Access Hospital · CCN 201304
Practice locations
Addresses where Billy W. Mahaney is enrolled with Medicare (CMS data updated 2026-10-02).
- 10 Wayman LnBar Harbor, ME 04609 (207) 288‑5081
- 118 Northport AveBelfast, ME 04915 (207) 338‑2500
- 123 Medical Ctr DrBrunswick, ME 04011 (207) 729‑0181
Group practices
Medicare enrollment lists Billy W. Mahaney as a member of these groups (CMS data updated 2026-10-02).
- Mount Desert Island Hospital65 clinicians in the group
- New England Radiological Consortium LLC19 clinicians in the group
- Radiology Consultants of Maine LLC14 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Bar Harbor
Clinicians with the same Medicare primary specialty in Bar Harbor, ME — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2001 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1457342966 |
| 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