NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Tonja Marie Ehalt, RN

Registered Nurse in Richland Center, WI · enumerated 2023.

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

National Provider Identifier

1891570966

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Tonja Marie Ehalt
Credential RN
Sex Female
Practice address 519 E Haseltine St, Richland Center, WI, 53581
Enumeration date Aug 28, 2023
Last updated in NPPES Aug 28, 2023

Taxonomy & licenses

163WG0000X General Practice Registered Nurse Nursing Service Providers · License 257256 (WI) Secondary
163WG0600X Gerontology Registered Nurse Nursing Service Providers · License 257256 (WI) Secondary
163WH0200X Home Health Registered Nurse Nursing Service Providers · License 257256 (WI) Secondary
163WH1000X Hospice Registered Nurse Nursing Service Providers · License 257256 (WI) Secondary
163WI0600X Infection Control Registered Nurse Nursing Service Providers · License 257256 (WI) Secondary
163WP0807X Child & Adolescent Psychiatric/Mental Health Registered Nurse Nursing Service Providers · License 257256 (WI) Secondary
163WC0400X Case Management Registered Nurse Nursing Service Providers · License 257256 (WI) Secondary
163WC1500X Community Health Registered Nurse Nursing Service Providers · License 257256 (WI) Secondary
163WC1600X Continuing Education/Staff Development Registered Nurse Nursing Service Providers · License 257256 (WI) Secondary
163WU0100X Urology Registered Nurse Nursing Service Providers · License 257256 (WI) Secondary
163WX0200X Oncology Registered Nurse Nursing Service Providers · License 257256 (WI) Secondary
163WP0808X Psychiatric/Mental Health Registered Nurse Nursing Service Providers · License 257256 (WI) Secondary
163WP0809X Adult Psychiatric/Mental Health Registered Nurse Nursing Service Providers · License 257256 (WI) Secondary
163WP2201X Ambulatory Care Registered Nurse Nursing Service Providers · License 257256 (WI) Secondary
163W00000X Registered Nurse Nursing Service Providers · License 257256 (WI) Primary
RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN credential

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 Tonja Ehalt?
The National Provider Identifier (NPI) for Tonja Ehalt is 1891570966, a Type 1 (individual) record in the CMS NPPES registry.
Where does Tonja Ehalt practice?
The practice location on file with NPPES is in Richland Center, 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 2023-08-28.