Quick answers
- Which hospitals does Michael J. Isaac work at?
- Medicare's official clinician data lists Michael J. Isaac at 2 hospitals: Maine General Medical Center and Northern Light Mercy Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Michael J. Isaac see patients?
- Medicare's clinician data lists 4 practice locations, including Portland, ME, Augusta, ME and Westbrook, ME. Call before your visit to confirm the address.
- What is Michael J. Isaac's specialty?
- Medicare lists Hospitalist as the primary specialty, and also Internal Medicine.
- Does Michael J. Isaac accept Medicare assignment?
- Yes. Medicare's clinician data says Michael J. Isaac 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 Michael J. Isaac?
- (207) 879-3000, as listed in official Medicare / NPI Registry data.
- What is Michael J. Isaac's NPI number?
- 1275782690. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Michael J. Isaac works
Medicare's Facility Affiliation Data lists Michael J. Isaac at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Maine General Medical CenterAugusta, ME · Acute Care Hospital · CCN 200039
- Northern Light Mercy HospitalPortland, ME · Acute Care Hospital · CCN 200008
Practice locations
Addresses where Michael J. Isaac is enrolled with Medicare (CMS data updated 2026-10-02).
- 155 Rover River PkwyPortland, ME 04102 (207) 879‑3000
- 175 Fore River PkwyPortland, ME 04102 (207) 879‑3000
- 35 Medical Ctr PkwyAugusta, ME 04330 (207) 621‑1000
- 40 Park RdWestbrook, ME 04092 (207) 857‑8174
Group practices
Medicare enrollment lists Michael J. Isaac as a member of these groups (CMS data updated 2026-10-02).
- Mainegeneral Medical Center555 clinicians in the group
- Mercy Hospital301 clinicians in the group
Specialties
- Hospitalistprimary
- Internal Medicinealso
Other hospitalists in Portland
Clinicians with the same Medicare primary specialty in Portland, ME — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2001 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1275782690 |
| 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