Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William J Swiggard, M.D., PH.D.

Infectious Disease Physician in Northampton, MA · enumerated 2005.

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

National Provider Identifier

1457335622

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Registry record

Entity type Individual (Type 1)

Name Dr. William J Swiggard

Credential M.D., PH.D.

Sex Male

Practice address 22 Atwood Dr Ste 203, Northampton, MA, 01060

Phone (413) 582-9186

Fax (413) 923-9317

Enumeration date Dec 1, 2005

Last updated in NPPES Apr 9, 2015

Taxonomy & licenses

207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License 219042 (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
0000000026856	Other	MA	BMC HEALTHNET
3319701	Other	MA	CIGNA HEALTHCARE
467273	Other	MA	TUFTS HEALTH PLAN
33426	Other	MA	HEALTH NEW ENGLAND
J26629	Other	MA	BCBS OF MASSACHUSETTS
7185266	Other	MA	AETNA
2025426	Medicaid	MA	-
219042	Other	MA	CONNECTICARE

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 Swiggard's NPI record?

Cross-check NPI 1457335622 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1457335622 active?

Yes, as of the latest NPPES snapshot, NPI 1457335622 is active (record last updated 2015-04-09).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-04-09.