Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Tammy Lynn Hahn

Occupational Health Nurse Practitioner in Gibsonton, FL · enumerated 2023.

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

National Provider Identifier

1922780329

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Tammy Lynn Hahn

Sex Female

Practice address Gibsonton, FL, 33534

Phone (813) 630-6943

Fax (813) 635-1796

Enumeration date Aug 4, 2023

Last updated in NPPES Nov 16, 2023

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License APRN11027865 (FL) Secondary

363LX0106X Occupational Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License APRN11027865 (FL) 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 Tammy Hahn?

Tammy Hahn is registered in NPPES with the primary taxonomy of Occupational Health 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 2023-11-16.