Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Adrienne Bak, NP

Family Nurse Practitioner in Watertown, SD · enumerated 2025.

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

National Provider Identifier

1316739550

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Registry record

Entity type Individual (Type 1)

Name Adrienne Bak

Credential NP

Sex Female

Practice address 506 1st Ave Se, Watertown, SD, 57201

Phone (605) 886-8482

Enumeration date May 22, 2025

Last updated in NPPES Jul 21, 2025

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License R039997 (SD) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License CP003740 (SD) Primary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP 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

How do I verify Adrienne Bak's NPI record?

Cross-check NPI 1316739550 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1316739550 active?

Yes, as of the latest NPPES snapshot, NPI 1316739550 is active (record last updated 2025-07-21).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-21.