Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William Albert Tanguay, M.D.

Internal Medicine Physician in Haverhill, MA · enumerated 2005.

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

National Provider Identifier

1629073424

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Registry record

Entity type Individual (Type 1)

Name William Albert Tanguay

Credential M.D.

Sex Male

Practice address 1 Parkway, Haverhill, MA, 01830

Phone (978) 521-3270

Fax (978) 374-8479

Enumeration date Jun 17, 2005

Last updated in NPPES Nov 21, 2012

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 36854 (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
0016288	Other	-	NEIGHBORHOOD HEALTH PLAN
2001893	Other	-	CIGNA
974553	Other	-	NETWORK HEALTH
110214688	Other	-	RAILROAD MEDICARE
1629073424	Other	MA	FALLON COMMUNITY HEALTH PLAN
5789143	Other	MA	AETNA NON HMO
30200165	Other	NH	NEW HAMPSHIRE MEDICAID
67884	Other	-	HEALTHSOURCE
J03184	Other	MA	BLUE CROSS BLUE SHIELD
110035980A	Medicaid	MA	-
62756	Other	MA	HARVARD PILGRIM HEALTHCAR
734732	Other	MA	TUFTS HEALTH PLAN
1629073424	Other	MA	AETNA HMO
04-07069	Other	-	EVERCARE
B74396	Other	NH	ANTHEM BLUE CROSS

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 William Tanguay's NPI record?

Cross-check NPI 1629073424 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1629073424 active?

Yes, as of the latest NPPES snapshot, NPI 1629073424 is active (record last updated 2012-11-21).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-11-21.