Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Matheau Antoine Julien, MD

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Round Rock, TX · enumerated 2007.

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

National Provider Identifier

1619189933

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Matheau Antoine Julien

Credential MD

Sex Male

Practice address 300 University Blvd, Round Rock, TX, 78665

Phone (515) 509-0100

Fax (512) 218-6330

Enumeration date May 7, 2007

Last updated in NPPES Jun 23, 2026

Taxonomy & licenses

208G00000X Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Allopathic & Osteopathic Physicians · License 0101274262 (VA) Secondary

208G00000X Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Allopathic & Osteopathic Physicians · License 036139510 (IL) Secondary

208G00000X Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Allopathic & Osteopathic Physicians · License U9422 (TX) Primary

208G00000X Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Allopathic & Osteopathic Physicians · License 4301517340 (MI) Secondary

208G00000X Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Allopathic & Osteopathic Physicians · License 17695 (ND) 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
036139510	Other	IL	ILLINOIS DEPARTMENT OF FINANCIAL AND PROFESSIONAL REGULATION

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 Matheau Julien practice?

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

What is the NPI number for Matheau Julien?

The National Provider Identifier (NPI) for Matheau Julien is 1619189933, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-23.