Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Katherine Emily Tillson, LAC, LCSW

Clinical Social Worker in Belgrade, MT · enumerated 2021 · practices at Bighorn Valley Health Center, Incorporated.

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

National Provider Identifier

1659944403

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Registry record

Entity type Individual (Type 1)

Name Katherine Emily Tillson

Credential LAC, LCSW

Sex Female

Practice address 19 E Main St, Belgrade, MT, 59714

Phone (406) 924-5754

Enumeration date Jul 20, 2021

Last updated in NPPES Dec 8, 2025

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers Secondary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License BBH-LCSW-LIC-50116 (MT) Primary

LAC · Licensed Acupuncturist: A practitioner licensed to perform acupuncture. About the LAC 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

Is NPI 1659944403 active?

Yes, as of the latest NPPES snapshot, NPI 1659944403 is active (record last updated 2025-12-08).

How do I verify Katherine Tillson's NPI record?

Cross-check NPI 1659944403 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-12-08.