Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Cynthia Renee Frost

Physical Therapy Assistant in Rancho Cucamonga, CA · enumerated 2012.

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

National Provider Identifier

1679829774

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Registry record

Entity type Individual (Type 1)

Name Mrs. Cynthia Renee Frost

Sex Female

Practice address 11326 Hollow Tree Dr, Rancho Cucamonga, CA, 91701

Phone (909) 244-0685

Fax (909) 244-0685

Enumeration date Jul 26, 2012

Last updated in NPPES Jul 26, 2012

Taxonomy & licenses

225200000X Physical Therapy Assistant Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License AT-4006 (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.

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Frequently asked questions

What is the NPI number for Cynthia Frost?

The National Provider Identifier (NPI) for Cynthia Frost is 1679829774, a Type 1 (individual) record in the CMS NPPES registry.

Where does Cynthia Frost practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-07-26.