Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Anna Katherine Weiss, FNP-C

Nurse Practitioner in Billings, MT · enumerated 2022.

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

National Provider Identifier

1689394629

Verified

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Registry record

Entity type Individual (Type 1)

Name Anna Katherine Weiss

Credential FNP-C

Sex Female

Practice address 1751 St George Blvd, Billings, MT, 59101

Phone (406) 672-2824

Enumeration date Aug 30, 2022

Last updated in NPPES Jun 3, 2025

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License NUR-RN-LIC-160478 (MT) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License NUR-APRN-LIC-261765 (MT) Secondary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 261765 (MT) 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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Anna Weiss?

Anna Weiss is registered in NPPES with the primary taxonomy of Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-06-03.