Quick answers
- Which hospitals does Gregory J. Hansen work at?
- Medicare's official clinician data lists Gregory J. Hansen at 2 hospitals: Cheshire Medical Center and Mary Hitchcock Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gregory J. Hansen see patients?
- Medicare's clinician data lists 1 practice location in Keene, NH. Call before your visit to confirm the address.
- What is Gregory J. Hansen's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Gregory J. Hansen accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory J. Hansen 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 Gregory J. Hansen?
- (603) 354-5400, as listed in official Medicare / NPI Registry data.
- What is Gregory J. Hansen's NPI number?
- 1538240635. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gregory J. Hansen works
Medicare's Facility Affiliation Data lists Gregory J. Hansen at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Cheshire Medical CenterKeene, NH · Acute Care Hospital · CCN 300019
- Mary Hitchcock Memorial HospitalLebanon, NH · Acute Care Hospital · CCN 300003
Practice locations
Addresses where Gregory J. Hansen is enrolled with Medicare (CMS data updated 2026-10-02).
- 590 Court StKeene, NH 03431 (603) 354‑5400
Group practices
Medicare enrollment lists Gregory J. Hansen as a member of this group (CMS data updated 2026-10-02).
- Dartmouth-Hitchcock Clinic1,472 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Keene
Clinicians with the same Medicare primary specialty in Keene, NH — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | State University Of Ny Upstate Medical University |
| Graduation year | 1998 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1538240635 |
| 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