Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Nathan J Lilley, PT, MPT, OCS, CSCS

Physical Therapist in Denver, CO · enumerated 2006.

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

National Provider Identifier

1598833618

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Registry record

Entity type Individual (Type 1)

Name Nathan J Lilley

Credential PT, MPT, OCS, CSCS

Sex Male

Practice address 3801 E Florida Ave, #330, Denver, CO, 80210

Phone (303) 370-2670

Fax (303) 370-2696

Enumeration date Nov 30, 2006

Last updated in NPPES Oct 17, 2014

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 7235 (CO) Primary

PT · Physical Therapist: A licensed movement specialist treating injury and disability through exercise and rehabilitation. About the PT credential

Other identifiers

Identifier	Type	State	Issuer
77086520	Medicaid	CO	-

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 Nathan Lilley?

The National Provider Identifier (NPI) for Nathan Lilley is 1598833618, a Type 1 (individual) record in the CMS NPPES registry.

Where does Nathan Lilley practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-10-17.