Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

William H. Truswell, MD

Plastic Surgery within the Head & Neck (Otolaryngology) Physician in Northampton, MA · enumerated 2006.

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

National Provider Identifier

1306810874

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Registry record

Entity type Individual (Type 1)

Name William H. Truswell

Credential MD

Sex Male

Practice address Northampton, MA, 01060

Phone (413) 587-0600

Fax (413) 585-5112

Enumeration date Feb 14, 2006

Last updated in NPPES Mar 9, 2022

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

2086S0122X Plastic and Reconstructive Surgery Physician Allopathic & Osteopathic Physicians · License 39445 (MA) Secondary

207YX0007X Plastic Surgery within the Head & Neck (Otolaryngology) Physician Allopathic & Osteopathic Physicians · License 39455 (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
04-3342311	Other	MA	NORTHEAST HEALTH DIRECT
04-3342311	Other	MA	NORTHEAST HEALTHCARE ALLI
2044293	Medicaid	MA	-
786654	Other	MA	AETNA
04-3342311	Other	MA	GREAT-WEST
17243	Other	MA	HEALTH NEW ENGLAND
19618	Other	MA	HARVARD PILGRIM
768732	Other	MA	TUFTS
F18007	Other	MA	BCBSMA
04-3342311	Other	MA	PLAN VISTA
04-3342311	Other	MA	UNICARE/GIC
1998362	Other	MA	CIGNA
742311	Other	MA	CONNECTICARE
04-3342311	Other	MA	PRIVATE HEALTHCARE SYSTEM
04-3342311	Other	MA	NORTH AMERICAN PREFERRED
04-3342311	Other	MA	CONSOLIDATED

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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 Truswell's NPI record?

Cross-check NPI 1306810874 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1306810874 active?

Yes, as of the latest NPPES snapshot, NPI 1306810874 is active (record last updated 2022-03-09).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-03-09.