NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mary Naomi Jahn, LADC

Addiction (Substance Use Disorder) Counselor in Montevideo, MN · enumerated 2024 · practices at Arneson Pharmacy Inc.

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

National Provider Identifier

1245092279

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Mary Naomi Jahn
Credential LADC
Sex Female
Practice address 1234 E Highway 7, Montevideo, MN, 56265
Fax (855) 562-7905
Enumeration date Jan 25, 2024
Last updated in NPPES Feb 2, 2024

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 303665 (MN) 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 Mary Jahn practice?
The practice location on file with NPPES is in Montevideo, MN. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mary Jahn?
The National Provider Identifier (NPI) for Mary Jahn is 1245092279, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-02-02.