Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dyan Hahn, WHNP

Women's Health Nurse Practitioner in Indianapolis, IN · enumerated 2022.

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

National Provider Identifier

1811605421

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Registry record

Entity type Individual (Type 1)

Name Dyan Hahn

Credential WHNP

Sex Female

Practice address 2855 N Keystone Ave Ste 100, Indianapolis, IN, 46218

Phone (317) 957-2300

Enumeration date Nov 11, 2022

Last updated in NPPES Nov 11, 2022

Taxonomy & licenses

363LW0102X Women's Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 28221511A (IN) 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.

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Frequently asked questions

Is NPI 1811605421 active?

Yes, as of the latest NPPES snapshot, NPI 1811605421 is active (record last updated 2022-11-11).

How do I verify Dyan Hahn's NPI record?

Cross-check NPI 1811605421 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 2022-11-11.