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

William Henry Leonard, CMTCERTIFIED MASSAGE

Massage Therapist in Mariposa, CA · enumerated 2011.

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

National Provider Identifier

1154608354

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Registry record

Entity type Individual (Type 1)

Name William Henry Leonard

Credential CMTCERTIFIED MASSAGE

Sex Male

Practice address Mariposa, CA, 95338

Phone (209) 742-5700

Enumeration date Nov 16, 2011

Last updated in NPPES Nov 16, 2011

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

Taxonomy & licenses

225700000X Massage Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers Primary

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

What is the NPI number for William Leonard?

The National Provider Identifier (NPI) for William Leonard is 1154608354, a Type 1 (individual) record in the CMS NPPES registry.

Where does William Leonard practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-11-16.