Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ella Marie Slager, COTA

Q: What is the NPI number for Ella Slager?

The National Provider Identifier (NPI) for Ella Slager is 1912513342, a Type 1 (individual) record in the CMS NPPES registry.

Occupational Therapy Assistant in Waupaca, WI · enumerated 2020.

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

National Provider Identifier

1912513342

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Registry record

Entity type Individual (Type 1)

Name Ella Marie Slager

Credential COTA

Sex Female

Practice address N2665 County Rd Qq, Waupaca, WI, 54981

Phone (715) 258-5586

Enumeration date Sep 21, 2020

Last updated in NPPES Sep 21, 2020

Taxonomy & licenses

224Z00000X Occupational Therapy Assistant Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 5721-27 (WI) 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 Ella Slager?

The National Provider Identifier (NPI) for Ella Slager is 1912513342, a Type 1 (individual) record in the CMS NPPES registry.

Where does Ella Slager practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-09-21.