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

Dr. Michael A Tessier I

Dentist in Rancho Santa Margarita, CA · enumerated 2007.

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

National Provider Identifier

1295856060

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Registry record

Entity type Individual (Type 1)

Name Dr. Michael A Tessier I

Sex Male

Practice address Rancho Santa Margarita, CA, 92688

Phone (949) 459-7212

Fax (949) 459-7927

Enumeration date Apr 2, 2007

Last updated in NPPES Jul 8, 2007

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

Taxonomy & licenses

122300000X Dentist Dental Providers · License 27207 (CA) 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 Michael Tessier?

The National Provider Identifier (NPI) for Michael Tessier is 1295856060, a Type 1 (individual) record in the CMS NPPES registry.

Where does Michael Tessier practice?

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

Other providers at this practice address

Browse all →

Gene J. Pak DDS Corporation Dentist · Rancho Santa Margarita, CA NPI 1477943546 Narges Mirjalili, DDS, Inc. General Practice Dentistry · Rancho Santa Margarita, CA NPI 1770467847

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