Quick answers
- Which hospitals does William A. Hanner work at?
- Medicare's official clinician data lists William A. Hanner at 3 hospitals: Ascension St John Medical Center, Mount Desert Island Hospital and Northern Light Mayo Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William A. Hanner see patients?
- Medicare's clinician data lists 3 practice locations, including Bar Harbor, ME and Tulsa, OK. Call before your visit to confirm the address.
- What is William A. Hanner's specialty?
- Medicare lists General Surgery as the primary specialty.
- Does William A. Hanner accept Medicare assignment?
- Yes. Medicare's clinician data says William A. Hanner 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 A. Hanner?
- (207) 288-5024, as listed in official Medicare / NPI Registry data.
- What is William A. Hanner's NPI number?
- 1528386984. 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 A. Hanner works
Medicare's Facility Affiliation Data lists William A. Hanner at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Ascension St John Medical CenterTulsa, OK · Acute Care Hospital · CCN 370114
- Mount Desert Island HospitalBar Harbor, ME · Critical Access Hospital · CCN 201304
- Northern Light Mayo HospitalDover Foxcroft, ME · Critical Access Hospital · CCN 201309
Practice locations
Addresses where William A. Hanner is enrolled with Medicare (CMS data updated 2026-10-02).
- 10 Wayman LnBar Harbor, ME 04609
- 17 Hancock StBar Harbor, ME 04609 (207) 288‑5024
- 3336 E 32nd St, Suite 250Tulsa, OK 74135 (918) 600‑0025
Group practices
Medicare enrollment lists William A. Hanner as a member of these groups (CMS data updated 2026-10-02).
- Mount Desert Island Hospital65 clinicians in the group
- Midtown Surgical and Skin Institute PLLC2 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in Maine
Clinicians with the same Medicare primary specialty in Maine — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Oklahoma State University College Of Osteopathic Medicine |
| Graduation year | 2010 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1528386984 |
| 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