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

William N Windler, M.D.

Emergency Medicine Physician in Manchester, NH · enumerated 2006.

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

National Provider Identifier

1265455877

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Registry record

Entity type Individual (Type 1)

Name William N Windler

Credential M.D.

Sex Male

Practice address Manchester, NH, 03103

Phone (603) 663-8718

Fax (603) 314-4554

Enumeration date Jul 25, 2006

Last updated in NPPES Nov 2, 2021

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

Taxonomy & licenses

2083X0100X Occupational Medicine Physician Allopathic & Osteopathic Physicians · License NH5982 (NH) Secondary

208D00000X General Practice Physician Allopathic & Osteopathic Physicians · License NH5982 (NH) Secondary

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 5982 (NH) 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
26170	Other	-	CIGNA
0104974Y0NH01	Other	NH	ANTHEM
3074418	Medicaid	NH	-
3074463	Medicaid	NH	-

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

Is NPI 1265455877 active?

Yes, as of the latest NPPES snapshot, NPI 1265455877 is active (record last updated 2021-11-02).

How do I verify William Windler's NPI record?

Cross-check NPI 1265455877 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-11-02.