Quick answers
- Which hospitals does Joseph M. Grzelak work at?
- Medicare's official clinician data lists Joseph M. Grzelak at 3 hospitals: Concord Hospital, Concord Hospital- Franklin and Concord Hospital- Laconia. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Joseph M. Grzelak see patients?
- Medicare's clinician data lists 1 practice location in Pembroke, NH. Call before your visit to confirm the address.
- What is Joseph M. Grzelak's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Joseph M. Grzelak accept Medicare assignment?
- Yes. Medicare's clinician data says Joseph M. Grzelak 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 Joseph M. Grzelak?
- (603) 485-8441, as listed in official Medicare / NPI Registry data.
- What is Joseph M. Grzelak's NPI number?
- 1669950671. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Joseph M. Grzelak works
Medicare's Facility Affiliation Data lists Joseph M. Grzelak at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Concord HospitalConcord, NH · Acute Care Hospital · CCN 300001
- Concord Hospital- FranklinFranklin, NH · Critical Access Hospital · CCN 301306
- Concord Hospital- LaconiaLaconia, NH · Acute Care Hospital · CCN 300005
Practice locations
Addresses where Joseph M. Grzelak is enrolled with Medicare (CMS data updated 2026-10-02).
- 121 Pembroke StPembroke, NH 03275 (603) 485‑8441
Group practices
Medicare enrollment lists Joseph M. Grzelak as a member of this group (CMS data updated 2026-10-02).
- Concord Hospital Inc567 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Pembroke
Clinicians with the same Medicare primary specialty in Pembroke, NH — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2018 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1669950671 |
| 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