Ralph Blair, M.D.
NPI 1275568230 · Hospitalist Physician · Cambridge, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ralph Blair, M.D. is a Hospitalist Physician provider in Cambridge, MA (NPI 1275568230).
Provider details
- NPI number
- 1275568230
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 51227 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
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
Mailing address
Registry dates
- Enumerated
- 2006-07-11
- Last updated
- 2025-09-11
Frequently asked questions
- What is Ralph Blair's NPI number?
- Ralph Blair's National Provider Identifier (NPI) is 1275568230, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ralph Blair's specialty?
- Ralph Blair is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Ralph Blair located?
- Ralph Blair's practice location on file with NPPES is 330 Mount Auburn St, Cambridge, MA 02138-5502.
- What is Ralph Blair's phone number?
- The practice phone number listed in the NPPES registry for Ralph Blair is (617) 492-3500.
- Does Ralph Blair accept Medicare?
- Ralph Blair is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ralph Blair's NPI active?
- Yes — Ralph Blair's NPI (1275568230) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.