Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Maria Luisa S. Petroff

Behavior Analyst in Owosso, MI · enumerated 2025.

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

National Provider Identifier

1346139078

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Registry record

Entity type Individual (Type 1)

Name Maria Luisa S. Petroff

Sex Female

Practice address 1019 Ryan St, Owosso, MI, 48867

Phone (989) 372-4974

Enumeration date Jun 30, 2025

Last updated in NPPES Jun 30, 2025

Taxonomy & licenses

103K00000X Behavior Analyst Behavioral Health & Social 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 Maria Luisa Petroff?

The National Provider Identifier (NPI) for Maria Luisa Petroff is 1346139078, a Type 1 (individual) record in the CMS NPPES registry.

Where does Maria Luisa Petroff practice?

The practice location on file with NPPES is in Owosso, 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 2025-06-30.