Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John Ikonomidis, MD

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Dallas, TX · enumerated 2006.

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

National Provider Identifier

1578678595

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Registry record

Entity type Individual (Type 1)

Name John Ikonomidis

Credential MD

Sex Male

Practice address 221 W. Colorado Blvd., Pavilion II Suite 728, Dallas, TX, 75208

Phone (469) 695-2055

Fax (469) 695-2056

Enumeration date Aug 20, 2006

Last updated in NPPES Sep 3, 2025

Taxonomy & licenses

208G00000X Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Allopathic & Osteopathic Physicians · License W0185 (TX) Primary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 22034 (SC) Secondary

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
T61304	Medicaid	SC	-

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 1578678595 active?

Yes, as of the latest NPPES snapshot, NPI 1578678595 is active (record last updated 2025-09-03).

How do I verify John Ikonomidis's NPI record?

Cross-check NPI 1578678595 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 2025-09-03.