Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. David Ritzenthaler, PT

Physical Therapist in Portage, MI · enumerated 2009.

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

National Provider Identifier

1184861676

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Registry record

Entity type Individual (Type 1)

Name Mr. David Ritzenthaler

Credential PT

Sex Male

Practice address 5717 Oakland Dr, Ste B, Portage, MI, 49024

Phone (269) 488-8360

Fax (269) 488-8359

Enumeration date Jan 21, 2009

Last updated in NPPES May 6, 2016

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 5501014270 (MI) Secondary

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 5501014270 (MI) Primary

PT · Physical Therapist: A licensed movement specialist treating injury and disability through exercise and rehabilitation. About the PT credential

Other identifiers

Identifier	Type	State	Issuer
650C901910	Other	MI	BCBS

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

How do I verify David Ritzenthaler's NPI record?

Cross-check NPI 1184861676 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1184861676 active?

Yes, as of the latest NPPES snapshot, NPI 1184861676 is active (record last updated 2016-05-06).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-05-06.