Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. David Adam Hassler, PA-S

Athletic Trainer in Terre Haute, IN · enumerated 2019.

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

National Provider Identifier

1275199077

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Registry record

Entity type Individual (Type 1)

Name Mr. David Adam Hassler

Credential PA-S

Sex Male

Practice address 567 N 5th St, Terre Haute, IN, 47809

Phone (812) 234-8343

Enumeration date May 16, 2019

Last updated in NPPES Feb 13, 2026

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers Secondary

2255A2300X Athletic Trainer Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 36001708A (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 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 David Hassler?

David Hassler is registered in NPPES with the primary taxonomy of Athletic Trainer. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-02-13.