Quick answers
- Which hospitals does Mark R. Lena work at?
- Medicare's official clinician data lists Mark R. Lena at 2 hospitals: Northern Light Maine Coast Hospital and St Joseph Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark R. Lena see patients?
- Medicare's clinician data lists 1 practice location in Bangor, ME. Call before your visit to confirm the address.
- What is Mark R. Lena's specialty?
- Medicare lists Gastroenterology as the primary specialty, and also Internal Medicine.
- Does Mark R. Lena accept Medicare assignment?
- Yes. Medicare's clinician data says Mark R. Lena 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 R. Lena?
- (207) 907-3550, as listed in official Medicare / NPI Registry data.
- What is Mark R. Lena's NPI number?
- 1366484230. 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 R. Lena works
Medicare's Facility Affiliation Data lists Mark R. Lena at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Northern Light Maine Coast HospitalEllsworth, ME · Acute Care Hospital · CCN 200050
- St Joseph HospitalBangor, ME · Acute Care Hospital · CCN 200001
Practice locations
Addresses where Mark R. Lena is enrolled with Medicare (CMS data updated 2026-10-02).
- 360 Broadway, Suite 100Bangor, ME 04401 (207) 907‑3550
Group practices
Medicare enrollment lists Mark R. Lena as a member of this group (CMS data updated 2026-10-02).
- St Joseph Hospital199 clinicians in the group
Specialties
- Gastroenterologyprimary
- Internal Medicinealso
Other gastroenterologists in Bangor
Clinicians with the same Medicare primary specialty in Bangor, ME — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Geisel School Of Medicine At Dartmouth |
| Graduation year | 1982 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1366484230 |
| 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