Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Jonathan James Liang, MD, PHD

Allergy & Immunology Physician in Philadelphia, PA · enumerated 2023.

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

National Provider Identifier

1679258669

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Registry record

Entity type Individual (Type 1)

Name Dr. Jonathan James Liang

Credential MD, PHD

Sex Male

Practice address 3500 Civic Center Blvd, Philadelphia, PA, 19104

Phone (215) 590-2549

Enumeration date Jun 19, 2023

Last updated in NPPES Oct 16, 2026

Taxonomy & licenses

207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians · License MD497335 (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

Where does Jonathan Liang practice?

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

What is the NPI number for Jonathan Liang?

The National Provider Identifier (NPI) for Jonathan Liang is 1679258669, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-10-16.