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

Dr. Patrick Kevin Gleeson, MD, MSCE

Allergy & Immunology Physician in Philadelphia, PA · enumerated 2015.

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

National Provider Identifier

1124406889

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Registry record

Entity type Individual (Type 1)

Name Dr. Patrick Kevin Gleeson

Credential MD, MSCE

Sex Male

Practice address Philadelphia, PA, 19104

Phone (215) 662-2775

Enumeration date May 14, 2015

Last updated in NPPES Dec 19, 2024

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

Taxonomy & licenses

207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians · License MD466426 (PA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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 1124406889 active?

Yes, as of the latest NPPES snapshot, NPI 1124406889 is active (record last updated 2024-12-19).

How do I verify Patrick Gleeson's NPI record?

Cross-check NPI 1124406889 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-12-19.