Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ana Ivy Dahl

Certified Registered Nurse Anesthetist in Rochester, MN · enumerated 2017.

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

National Provider Identifier

1639683691

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Registry record

Entity type Individual (Type 1)

Name Ana Ivy Dahl

Sex Female

Practice address 200 1st St Sw, Rochester, MN, 55905

Phone (507) 284-2511

Enumeration date Nov 28, 2017

Last updated in NPPES Oct 13, 2020

Taxonomy & licenses

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License 2171 (MN) Primary

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License 9979 (WI) Secondary

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

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 1639683691 active?

Yes, as of the latest NPPES snapshot, NPI 1639683691 is active (record last updated 2020-10-13).

How do I verify Ana Dahl's NPI record?

Cross-check NPI 1639683691 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 2020-10-13.