Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Andrew Mark Shirlen, PA-C

Physician Assistant in Naples, FL · enumerated 2006.

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

National Provider Identifier

1366459224

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Registry record

Entity type Individual (Type 1)

Name Andrew Mark Shirlen

Credential PA-C

Sex Male

Practice address 399 9th St N Ste 300, Naples, FL, 34102

Phone (239) 624-4299

Fax (239) 624-8856

Enumeration date Aug 2, 2006

Last updated in NPPES Apr 29, 2025

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 0010-00321 (NC) Secondary

363AS0400X Surgical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA-1270 (AR) Secondary

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA9120129 (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

What specialty is Andrew Shirlen?

Andrew Shirlen is registered in NPPES with the primary taxonomy of Physician Assistant. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-04-29.