Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Leo P Niffeler, LMSW

Q: What is the NPI number for Leo Niffeler?

The National Provider Identifier (NPI) for Leo Niffeler is 1164520045, a Type 1 (individual) record in the CMS NPPES registry.

Social Worker in Clinton Township, MI · enumerated 2006.

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

National Provider Identifier

1164520045

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Registry record

Entity type Individual (Type 1)

Name Leo P Niffeler

Credential LMSW

Sex Male

Practice address 35455 Garfield Rd, #C, Clinton Township, MI, 48035

Phone (586) 792-5335

Fax (586) 792-3061

Enumeration date Sep 21, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 6801015026 (MI) 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

Where does Leo Niffeler practice?

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

What is the NPI number for Leo Niffeler?

The National Provider Identifier (NPI) for Leo Niffeler is 1164520045, a Type 1 (individual) record in the CMS NPPES registry.

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