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

Mr. William Merrick Wadsworth, L AC

Acupuncturist in Bronxville, NY · enumerated 2006.

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

National Provider Identifier

1609942135

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Registry record

Entity type Individual (Type 1)

Name Mr. William Merrick Wadsworth

Credential L AC

Sex Male

Practice address Bronxville, NY, 10708

Phone (914) 787-9570

Enumeration date Nov 27, 2006

Last updated in NPPES Jul 8, 2007

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

Taxonomy & licenses

171100000X Acupuncturist Other Service Providers · License 002153-1 (NY) Primary

LAC · Licensed Acupuncturist: A practitioner licensed to perform acupuncture. About the LAC credential

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does William Wadsworth practice?

The practice location on file with NPPES is in Bronxville, NY. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for William Wadsworth?

The National Provider Identifier (NPI) for William Wadsworth is 1609942135, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.