Quick answers
- Which hospitals does Joshua A. Keller work at?
- Medicare's official clinician data lists Joshua A. Keller at 4 hospitals: MaineHealth Franklin Hospital, MaineHealth Maine Medical Center, The Memorial Hospital and York Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Joshua A. Keller see patients?
- Medicare's clinician data lists 2 practice locations, including York, ME and Portland, ME. Call before your visit to confirm the address.
- What is Joshua A. Keller's specialty?
- Medicare lists Rheumatology as the primary specialty.
- Does Joshua A. Keller accept Medicare assignment?
- Yes. Medicare's clinician data says Joshua A. Keller 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 Joshua A. Keller?
- (207) 351-2118, as listed in official Medicare / NPI Registry data.
- What is Joshua A. Keller's NPI number?
- 1578975439. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Joshua A. Keller works
Medicare's Facility Affiliation Data lists Joshua A. Keller at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- MaineHealth Franklin HospitalFarmington, ME · Critical Access Hospital · CCN 201316
- MaineHealth Maine Medical CenterPortland, ME · Acute Care Hospital · CCN 200009
- The Memorial HospitalNorth Conway, NH · Critical Access Hospital · CCN 301307
- York HospitalYork, ME · Acute Care Hospital · CCN 200020
Practice locations
Addresses where Joshua A. Keller is enrolled with Medicare (CMS data updated 2026-10-02).
- 16 Hospital DrYork, ME 03909 (207) 351‑2118
- 51 Sewall StPortland, ME 04102 (207) 774‑5761
Group practices
Medicare enrollment lists Joshua A. Keller as a member of these groups (CMS data updated 2026-10-02).
- York Hospital198 clinicians in the group
- Rheumatology Associates P.A.10 clinicians in the group
Specialties
- Rheumatologyprimary
Other rheumatologists in Maine
Clinicians with the same Medicare primary specialty in Maine — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2014 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1578975439 |
| 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