Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Neil S Birnbaum, MD

Internal Medicine Physician in Norwood, MA · enumerated 2005.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1659378628

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Registry record

Entity type Individual (Type 1)

Name Neil S Birnbaum

Credential MD

Sex Male

Practice address 1177 Boston Providence Tpke, Norwood, MA, 02062

Phone (781) 278-5540

Fax (781) 762-7623

Enumeration date Jul 5, 2005

Last updated in NPPES Jan 22, 2021

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 59486 (MA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
0016042	Other	-	ONE HEALTH PLAN
059486	Other	-	TUFTS
65027	Other	-	HAVARD PILGRAM
A66615	Other	-	FIRST SENIORITY
J07346	Other	-	HMO BLUE CHOICE
04-40796	Other	-	UNITED HEALTHCARE PPO
3033911	Other	-	MASS HEALTH
5970687	Other	-	CIGNA
J07346	Other	-	BLUE SHIELD INDEMNITY
110119266	Other	-	RAILROAD MEDICARE
5970687	Other	-	HEALTHSOURCE

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How do I verify Neil Birnbaum's NPI record?

Cross-check NPI 1659378628 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1659378628 active?

Yes, as of the latest NPPES snapshot, NPI 1659378628 is active (record last updated 2021-01-22).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-01-22.