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

Dr. P Mark Glencross, MD MPH PA

Occupational Medicine Physician in Largo, FL · enumerated 2005.

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

National Provider Identifier

1427058205

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. P Mark Glencross

Credential MD MPH PA

Sex Male

Practice address Largo, FL, 33771

Phone (979) 393-0161

Fax (866) 548-6451

Enumeration date Jul 22, 2005

Last updated in NPPES Dec 20, 2022

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

Taxonomy & licenses

208100000X Physical Medicine & Rehabilitation Physician Allopathic & Osteopathic Physicians · License ME56612 (FL) Secondary

208100000X Physical Medicine & Rehabilitation Physician Allopathic & Osteopathic Physicians · License N9706 (TX) Secondary

202C00000X Independent Medical Examiner Physician Allopathic & Osteopathic Physicians · License ME56612 (FL) Secondary

2081S0010X Sports Medicine (Physical Medicine & Rehabilitation) Physician Allopathic & Osteopathic Physicians · License ME56612 (FL) Secondary

2083X0100X Occupational Medicine Physician Allopathic & Osteopathic Physicians · License N9706 (TX) Secondary

2083X0100X Occupational Medicine Physician Allopathic & Osteopathic Physicians · License ME56612 (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 NPI 1427058205 active?

Yes, as of the latest NPPES snapshot, NPI 1427058205 is active (record last updated 2022-12-20).

How do I verify P Glencross's NPI record?

Cross-check NPI 1427058205 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-12-20.