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

Rachel Elaine Guernsey, LMFT, LCPC

Marriage & Family Therapist in Great Falls, MT · enumerated 2011.

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

National Provider Identifier

1598034175

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Registry record

Entity type Individual (Type 1)

Name Rachel Elaine Guernsey

Credential LMFT, LCPC

Sex Female

Practice address Great Falls, MT, 59404

Phone (406) 590-4946

Fax (406) 303-3575

Enumeration date Dec 27, 2011

Last updated in NPPES Dec 14, 2021

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

Taxonomy & licenses

101Y00000X Counselor Behavioral Health & Social Service Providers · License SWP-LCPC-LIC-2324 (MT) Secondary

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License SWP-LCPC-LIC-2324 (MT) Secondary

101YP2500X Professional Counselor Behavioral Health & Social Service Providers · License SWP-LCPC-LIC-2324 (MT) Secondary

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License SWP-LMFT-LIC-19 (MT) Primary

LMFT · Licensed Marriage and Family Therapist: A licensed therapist specializing in relational and family psychotherapy. About the LMFT 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 1598034175 active?

Yes, as of the latest NPPES snapshot, NPI 1598034175 is active (record last updated 2021-12-14).

How do I verify Rachel Guernsey's NPI record?

Cross-check NPI 1598034175 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-14.