Quick answers
- Which hospitals does Jason Shaffer work at?
- Medicare's official clinician data lists Jason Shaffer at 3 hospitals: Cambridge Health Alliance, Massachusetts General Hospital and North Shore Medical Center -. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Jason Shaffer see patients?
- Medicare's clinician data lists 3 practice locations, including Danvers, MA, Marblehead, MA and Somerville, MA. Call before your visit to confirm the address.
- What is Jason Shaffer's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Jason Shaffer accept Medicare assignment?
- Yes. Medicare's clinician data says Jason Shaffer 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 Jason Shaffer?
- (978) 739-6950, as listed in official Medicare / NPI Registry data.
- What is Jason Shaffer's NPI number?
- 1043898273. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Jason Shaffer works
Medicare's Facility Affiliation Data lists Jason Shaffer at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Cambridge Health AllianceCambridge, MA · Acute Care Hospital · CCN 220011
- Massachusetts General HospitalBoston, MA · Acute Care Hospital · CCN 220071
- North Shore Medical Center -Salem, MA · Acute Care Hospital · CCN 220035
Practice locations
Addresses where Jason Shaffer is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Hutchinson DrDanvers, MA 01923 (978) 739‑6950
- 1 Widger RdMarblehead, MA 01945 (781) 631‑5726
- 300 BroadwaySomerville, MA 02145 (617) 284‑7000
Group practices
Medicare enrollment lists Jason Shaffer as a member of these groups (CMS data updated 2026-10-02).
- Mass General Brigham Medical Group Northern Massachusetts Inc827 clinicians in the group
- Cambridge Public Health Commission656 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Danvers
Clinicians with the same Medicare primary specialty in Danvers, MA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Massachusetts Medical School |
| Graduation year | 2021 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1043898273 |
| 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