Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mary Keyrouse

Other Technician in Vassar, MI · enumerated 2016.

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

National Provider Identifier

1538511258

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Registry record

Entity type Individual (Type 1)

Name Mary Keyrouse

Sex Female

Practice address 1022 King James Ct, Vassar, MI, 48768

Phone (602) 803-9653

Enumeration date Jul 6, 2016

Last updated in NPPES Jul 6, 2016

Taxonomy & licenses

247200000X Other Technician Technologists, Technicians & Other Technical 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 Mary Keyrouse?

The National Provider Identifier (NPI) for Mary Keyrouse is 1538511258, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mary Keyrouse practice?

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

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