Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Thomas F Diaz, M.D.

Cardiovascular Disease Physician in Flourtown, PA · enumerated 2008.

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

National Provider Identifier

1023273919

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Registry record

Entity type Individual (Type 1)

Name Thomas F Diaz

Credential M.D.

Sex Male

Practice address 1722 Bethlehem Pike, Flourtown, PA, 19031

Phone (215) 233-9700

Fax (215) 233-9710

Enumeration date Jul 21, 2008

Last updated in NPPES Nov 20, 2013

Taxonomy & licenses

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License MD-440335 (PA) Primary

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

Other identifiers

Identifier	Type	State	Issuer
1007278000	Other	PA	MEDICAID TPI GROUP
597586	Other	PA	MEDICARE TPI GROUP
CD4829	Other	PA	RAILROAD MEDICARE TPI GROUP

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 1023273919 active?

Yes, as of the latest NPPES snapshot, NPI 1023273919 is active (record last updated 2013-11-20).

How do I verify Thomas Diaz's NPI record?

Cross-check NPI 1023273919 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 2013-11-20.