OrganizationActive
Massachusetts General Hospital
NPI 1821123860 · Critical Access Hospital · Boston, MA
Massachusetts General Hospital is a Critical Access Hospital organization in Boston, MA (NPI 1821123860).
Provider details
- NPI number
- 1821123860
- Entity type
- Organization
- Primary specialty
- Critical Access HospitalHospitals
- Organization subpart
- No
- Authorized official
- Alice Flaherty, Neurologist(617) 724-9234
- License
- 226904 (MA)
Specialties & taxonomies
Hospitals
Profile Score
Detailed profile(90/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
15 Parkman St
Wacc 835
Boston, MA 02114-3117
Phone: (617) 724-9234
Street-level locationGet directions
Mailing address
40 Prospect Ave
Quincy, MA 02170-3320
Registry dates
- Enumerated
- 2007-02-22
- Last updated
- 2020-08-22
Frequently asked questions
- What is Massachusetts General Hospital's NPI number?
- Massachusetts General Hospital's National Provider Identifier (NPI) is 1821123860, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Massachusetts General Hospital?
- Massachusetts General Hospital is classified in the NPPES registry as Critical Access Hospital (Hospitals).
- Where is Massachusetts General Hospital located?
- Massachusetts General Hospital's practice location on file with NPPES is 15 Parkman St, Boston, MA 02114-3117.
- What is Massachusetts General Hospital's phone number?
- The practice phone number listed in the NPPES registry for Massachusetts General Hospital is (617) 724-9234.
- Who is the authorized official for Massachusetts General Hospital?
- The authorized official listed on Massachusetts General Hospital's NPPES record is Alice Flaherty, Neurologist. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Massachusetts General Hospital's NPI active?
- Yes — Massachusetts General Hospital's NPI (1821123860) is active in the NPPES registry as of the last update on 2020-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.