Quick answers
- Which hospitals does John O. McKeon work at?
- Medicare's official clinician data lists John O. McKeon at 1 hospital: MaineHealth Maine Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John O. McKeon see patients?
- Medicare's clinician data lists 1 practice location in Portland, ME. Call before your visit to confirm the address.
- What is John O. McKeon's specialty?
- Medicare lists Anesthesiology as the primary specialty.
- Does John O. McKeon accept Medicare assignment?
- Yes. Medicare's clinician data says John O. McKeon 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 John O. McKeon?
- (207) 662-2526, as listed in official Medicare / NPI Registry data.
- What is John O. McKeon's NPI number?
- 1811557580. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John O. McKeon works
Medicare's Facility Affiliation Data lists John O. McKeon 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
Practice locations
Addresses where John O. McKeon is enrolled with Medicare (CMS data updated 2026-10-02).
- 22 Bramhall StPortland, ME 04102 (207) 662‑2526
Group practices
Medicare enrollment lists John O. McKeon as a member of this group (CMS data updated 2026-10-02).
- Spectrum Healthcare Partners PA308 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Portland
Clinicians with the same Medicare primary specialty in Portland, ME — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Touro Un Col Of Osteopathic Medicine, New York |
| Graduation year | 2019 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1811557580 |
| 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