Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mary Louise Slingerland

Occupational Therapist in Oxford, MI · enumerated 2026.

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

National Provider Identifier

1871401075

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Registry record

Entity type Individual (Type 1)

Name Mary Louise Slingerland

Sex Female

Practice address Oxford, MI, 48371

Phone (248) 969-5000

Enumeration date Aug 29, 2026

Last updated in NPPES Aug 29, 2026

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 5201002772 (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.

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Frequently asked questions

Where does Mary Slingerland practice?

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

What is the NPI number for Mary Slingerland?

The National Provider Identifier (NPI) for Mary Slingerland is 1871401075, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Adam Rainey School Psychologist · Oxford, MI NPI 1932030673

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-08-29.