Quick answers
- Which hospitals does Melanie Greenan work at?
- Medicare's official clinician data lists Melanie Greenan at 5 hospitals: Beth Israel Deaconess Hospital Plymouth, Cape Cod Hospital, Falmouth Hospital, Martha's Vineyard Hospital Inc and Nantucket Cottage Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Melanie Greenan see patients?
- Medicare's clinician data lists 1 practice location in Norfolk, MA. Call before your visit to confirm the address.
- What is Melanie Greenan's specialty?
- Medicare lists Nephrology as the primary specialty, and also Internal Medicine.
- Does Melanie Greenan accept Medicare assignment?
- Yes. Medicare's clinician data says Melanie Greenan 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 Melanie Greenan?
- (617) 739-7100, as listed in official Medicare / NPI Registry data.
- What is Melanie Greenan's NPI number?
- 1790783348. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Melanie Greenan works
Medicare's Facility Affiliation Data lists Melanie Greenan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Beth Israel Deaconess Hospital PlymouthPlymouth, MA · Acute Care Hospital · CCN 220060
- Cape Cod HospitalHyannis, MA · Acute Care Hospital · CCN 220012
- Falmouth HospitalFalmouth, MA · Acute Care Hospital · CCN 220135
- Martha's Vineyard Hospital IncOak Bluffs, MA · Critical Access Hospital · CCN 221300
- Nantucket Cottage HospitalNantucket, MA · Acute Care Hospital · CCN 220177
Practice locations
Addresses where Melanie Greenan is enrolled with Medicare (CMS data updated 2026-10-02).
- 31 Pine St, Suite 204Norfolk, MA 02056 (617) 739‑7100
Group practices
Medicare enrollment lists Melanie Greenan as a member of this group (CMS data updated 2026-10-02).
- NE Nephrology Home Care Associates10 clinicians in the group
Specialties
- Nephrologyprimary
- Internal Medicinealso
Other nephrologists in Massachusetts
Clinicians with the same Medicare primary specialty in Massachusetts — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Warren Alpert Medical School Of Brown University |
| Graduation year | 2000 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1790783348 |
| 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