Quick answers
- Which hospitals does Gregory Blackman work at?
- Medicare's official clinician data lists Gregory Blackman at 5 hospitals: Brigham and Women's Hospital, Martha's Vineyard Hospital Inc, Massachusetts General Hospital, The Cooley Dickinson Hospital Inc and Wentworth-Douglass Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gregory Blackman see patients?
- Medicare's clinician data lists 2 practice locations, including Medford, MA and Northampton, MA. Call before your visit to confirm the address.
- What is Gregory Blackman's specialty?
- Medicare lists Interventional Radiology as the primary specialty.
- Does Gregory Blackman accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory Blackman 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 Blackman?
- (781) 395-4909, as listed in official Medicare / NPI Registry data.
- What is Gregory Blackman's NPI number?
- 1811941032. 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 Blackman works
Medicare's Facility Affiliation Data lists Gregory Blackman at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Brigham and Women's HospitalBoston, MA · Acute Care Hospital · CCN 220110
- Martha's Vineyard Hospital IncOak Bluffs, MA · Critical Access Hospital · CCN 221300
- Massachusetts General HospitalBoston, MA · Acute Care Hospital · CCN 220071
- The Cooley Dickinson Hospital IncNorthampton, MA · Acute Care Hospital · CCN 220015
- Wentworth-Douglass HospitalDover, NH · Acute Care Hospital · CCN 300018
Practice locations
Addresses where Gregory Blackman is enrolled with Medicare (CMS data updated 2026-10-02).
- 170 Governors AveMedford, MA 02155 (781) 395‑4909
- 30 Locust StNorthampton, MA 01060 (978) 354‑4181
Group practices
Medicare enrollment lists Gregory Blackman as a member of these groups (CMS data updated 2026-10-02).
- Mass General Brigham Community Physicians Inc428 clinicians in the group
- Mass General Brigham Medical Group Western Massachusetts Inc291 clinicians in the group
Specialties
- Interventional Radiologyprimary
Find other Interventional Radiology doctors in Massachusetts →
Other interventional radiologists in Massachusetts
Clinicians with the same Medicare primary specialty in Massachusetts — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Vanderbilt University School Of Medicine |
| Graduation year | 1983 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1811941032 |
| 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