Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Timothy William Ingraham Clark, MD

Vascular & Interventional Radiology Physician in Philadelphia, PA · enumerated 2006 · practices at Penn Presbyterian Medical Center of the University of Pennsylvania Hea.

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

National Provider Identifier

1588629885

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Registry record

Entity type Individual (Type 1)

Name Timothy William Ingraham Clark

Credential MD

Sex Male

Practice address 51 N. 39th Street, Philadelphia, PA, 19104

Phone (215) 662-3005

Enumeration date Apr 19, 2006

Last updated in NPPES Apr 18, 2018

Taxonomy & licenses

2085R0204X Vascular & Interventional Radiology Physician Allopathic & Osteopathic Physicians · License MD065636L (PA) Primary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License MD065636L (PA) Secondary

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 Timothy Clark 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 Timothy Clark?

The National Provider Identifier (NPI) for Timothy Clark is 1588629885, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-04-18.