Active NPIIndividual provider

Ralph J Blair, MD

Hospitalist in Cambridge, Massachusetts

NPI Number1275568230
Practice location
330 Mount Auburn St, Cambridge, MA 02138-5502
Fax
—
Last updated
September 11, 2025

Ralph J Blair is a Hospitalist based in Cambridge, MA. Ralph J Blair practices in Cambridge, MA and has the professional credentials of MD. The NPI Number for Ralph J Blair is 1275568230 and holds a License No. 51227 (MA). The current practice location address for Ralph J Blair is 330 Mount Auburn St, Cambridge, MA 02138-5502 and can be reached out via phone at 617-492-3500.

Provider Profile Details

NPI Number
1275568230
Provider Name
Ralph J Blair
Credential
MD
Provider Entity Type
Individual
Gender
Male
Address
330 Mount Auburn St, Cambridge, MA 02138-5502
Phone Number
617-492-3500
Primary Taxonomy
Hospitalist · 208M00000X
Sole Proprietor
No
Provider Enumeration Date
July 11, 2006
Last Update Date
September 11, 2025
NPI Status
Active

Provider Business Practice Location Address Details

Address
330 Mount Auburn St
Cambridge, MA 02138-5502
Zip
02138-5502
Phone Number
617-492-3500
Cambridge, MA 02138Get directions →

Provider Business Mailing Address Details

Address
147 Milk St
Provider Enrollment - 9TH Floor
Boston, MA 02109-4806
City
Boston
State
MA
Zip
02109-4806
Phone Number
617-559-8374
Fax Number
617-421-3487

License Information

License Number (1)
51227
License State (1)
MA
Taxonomy (1)
Internal Medicine · 207R00000X
License Number (2)
51227
License State (2)
MA
Taxonomy (2)
Internal Medicine, Infectious Disease · 207RI0200X
License Number (3)
51227
License State (3)
MA
Taxonomy (3)
Hospitalist · 208M00000X · Primary

Legacy Identifiers

IdentifierTypeStateIssuer
No legacy identifiers (Medicaid, Medicare or plan IDs) are on file for this provider.

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Frequently Asked Questions

What is the NPI number of Ralph J Blair, MD?

The NPI number of Ralph J Blair, MD is 1275568230. It was assigned on July 11, 2006 and is currently active in the NPPES registry.

What is the specialty of Ralph J Blair, MD?

Ralph J Blair, MD is registered under the primary taxonomy Hospitalist (code 208M00000X), licensed in MA under license number 51227.

Where does Ralph J Blair, MD practice?

The practice location is 330 Mount Auburn St, Cambridge, MA 02138-5502. The office can be reached at 617-492-3500 (phone).

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit identification number issued to health care providers in the United States by the Centers for Medicare and Medicaid Services (CMS). It is used in HIPAA standard transactions.

How do I verify this NPI record?

This record is sourced from the public NPPES NPI Registry maintained by CMS. You can confirm it by searching NPI 1275568230 directly on the NPPES registry website.

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