Quick answers
- Which hospitals does Rachel E. Grenier work at?
- Medicare's official clinician data lists Rachel E. Grenier at 3 hospitals: Martha's Vineyard Hospital Inc, Massachusetts General Hospital and Nantucket Cottage Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Rachel E. Grenier see patients?
- Medicare's clinician data lists 3 practice locations, including Revere, MA, Boston, MA and Nantucket, MA. Call before your visit to confirm the address.
- What is Rachel E. Grenier's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Rachel E. Grenier accept Medicare assignment?
- Yes. Medicare's clinician data says Rachel E. Grenier 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 Rachel E. Grenier?
- (617) 724-0287, as listed in official Medicare / NPI Registry data.
- What is Rachel E. Grenier's NPI number?
- 1497214506. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Rachel E. Grenier works
Medicare's Facility Affiliation Data lists Rachel E. Grenier at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Martha's Vineyard Hospital IncOak Bluffs, MA · Critical Access Hospital · CCN 221300
- Massachusetts General HospitalBoston, MA · Acute Care Hospital · CCN 220071
- Nantucket Cottage HospitalNantucket, MA · Acute Care Hospital · CCN 220177
Practice locations
Addresses where Rachel E. Grenier is enrolled with Medicare (CMS data updated 2026-10-02).
- 300 Ocean AveRevere, MA 02151
- 55 Fruit StBoston, MA 02114 (617) 724‑0287
- 57 Prospect StNantucket, MA 02554 (508) 825‑8100
Group practices
Medicare enrollment lists Rachel E. Grenier as a member of this group (CMS data updated 2026-10-02).
- Massachusetts General Physicians Organization Inc3,558 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Revere
Clinicians with the same Medicare primary specialty in Revere, MA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Georgetown University School Of Medicine |
| Graduation year | 2019 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1497214506 |
| 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