Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Themistocles Dassopoulos, MD

Gastroenterology Physician in Dallas, TX · enumerated 2006.

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

National Provider Identifier

1326083148

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Registry record

Entity type Individual (Type 1)

Name Dr. Themistocles Dassopoulos

Credential MD

Sex Male

Practice address 3409 Worth Street, Suite 640, Dallas, TX, 75246

Phone (469) 800-7180

Fax (469) 800-7190

Enumeration date Jun 17, 2006

Last updated in NPPES Sep 2, 2016

Taxonomy & licenses

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 2008001013 (MO) Secondary

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License Q0899 (TX) 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
1760488936	Other	TX	GROUP NPI
3445801-01	Medicaid	TX	-
7310099	Other	TX	AETNA MEDICARE

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.

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Frequently asked questions

How do I verify Themistocles Dassopoulos's NPI record?

Cross-check NPI 1326083148 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1326083148 active?

Yes, as of the latest NPPES snapshot, NPI 1326083148 is active (record last updated 2016-09-02).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-09-02.