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

Derek L Nissley, ATC

Athletic Trainer in Mount Joy, PA · enumerated 2006.

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

National Provider Identifier

1235216300

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Registry record

Entity type Individual (Type 1)

Name Derek L Nissley

Credential ATC

Sex Male

Practice address Mount Joy, PA, 17552

Phone (717) 314-9537

Enumeration date Nov 1, 2006

Last updated in NPPES Nov 30, 2018

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

Taxonomy & licenses

2255A2300X Athletic Trainer Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License RT002083A (PA) 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

What is the NPI number for Derek Nissley?

The National Provider Identifier (NPI) for Derek Nissley is 1235216300, a Type 1 (individual) record in the CMS NPPES registry.

Where does Derek Nissley practice?

The practice location on file with NPPES is in Mount Joy, PA. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-11-30.