Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Teresa M Thais, FNP

Q: What is the NPI number for Teresa Thais?

The National Provider Identifier (NPI) for Teresa Thais is 1801000237, a Type 1 (individual) record in the CMS NPPES registry.

Family Nurse Practitioner in Costa Mesa, CA · enumerated 2007.

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

National Provider Identifier

1801000237

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Registry record

Entity type Individual (Type 1)

Name Teresa M Thais

Credential FNP

Sex Female

Practice address 722 Baker Street, Costa Mesa, CA, 92626

Phone (714) 557-6300

Fax (714) 966-9509

Enumeration date May 8, 2007

Last updated in NPPES Jun 16, 2016

Taxonomy & licenses

163WG0000X General Practice Registered Nurse Nursing Service Providers · License 523371 (CA) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 16954 (CA) Primary

FNP · Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan. About the FNP 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 Teresa Thais practice?

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

What is the NPI number for Teresa Thais?

The National Provider Identifier (NPI) for Teresa Thais is 1801000237, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-06-16.