Quick answers
- Which hospitals does Mark D. Kaplan work at?
- Medicare's official clinician data lists Mark D. Kaplan at 2 hospitals: Houlton Regional Hospital and Penobscot Valley Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark D. Kaplan see patients?
- Medicare's clinician data lists 2 practice locations, including Princeton, ME and Danforth, ME. Call before your visit to confirm the address.
- What is Mark D. Kaplan's specialty?
- Medicare lists Family Practice as the primary specialty, and also Internal Medicine.
- Does Mark D. Kaplan accept Medicare assignment?
- Yes. Medicare's clinician data says Mark D. Kaplan 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 Mark D. Kaplan?
- (207) 796-5503, as listed in official Medicare / NPI Registry data.
- What is Mark D. Kaplan's NPI number?
- 1861498461. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark D. Kaplan works
Medicare's Facility Affiliation Data lists Mark D. Kaplan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Houlton Regional HospitalHoulton, ME · Critical Access Hospital · CCN 201308
- Penobscot Valley HospitalLincoln, ME · Critical Access Hospital · CCN 201303
Practice locations
Addresses where Mark D. Kaplan is enrolled with Medicare (CMS data updated 2026-10-02).
- 136 Mill StPrinceton, ME 04668 (207) 796‑5503
- 201 Houlton RdDanforth, ME 04424 (207) 448‑2347
Group practices
Medicare enrollment lists Mark D. Kaplan as a member of these groups (CMS data updated 2026-10-02).
- St Croix Regional Family Health Center21 clinicians in the group
- East Grand Health Center Inc7 clinicians in the group
Specialties
- Family Practiceprimary
- Internal Medicinealso
Other family doctors in Maine
Clinicians with the same Medicare primary specialty in Maine — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1972 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1861498461 |
| 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