Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gretchen Nassen

Marriage & Family Therapist in Huron, SD · enumerated 2025.

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

National Provider Identifier

1053209585

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Registry record

Entity type Individual (Type 1)

Name Gretchen Nassen

Sex Female

Practice address 259 Dakota Ave S Ste 7, Huron, SD, 57350

Phone (605) 550-0632

Enumeration date Jun 24, 2025

Last updated in NPPES Nov 24, 2025

Taxonomy & licenses

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers 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 Gretchen Nassen practice?

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

What is the NPI number for Gretchen Nassen?

The National Provider Identifier (NPI) for Gretchen Nassen is 1053209585, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-11-24.