Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Matthew Jay Sideman, MD

Vascular Surgery Physician in San Antonio, TX · enumerated 2006.

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

National Provider Identifier

1386614774

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Registry record

Entity type Individual (Type 1)

Name Matthew Jay Sideman

Credential MD

Sex Male

Practice address 8300 Floyd Curl Dr Fl 4, San Antonio, TX, 78229

Phone (210) 450-9888

Fax (210) 450-6041

Enumeration date Jan 26, 2006

Last updated in NPPES Dec 2, 2021

Taxonomy & licenses

2086S0129X Vascular Surgery Physician Allopathic & Osteopathic Physicians · License N4100 (TX) Primary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License N4100 (TX) 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
100845890B	Medicaid	OK	-
201386401	Medicaid	TX	-
201386402	Other	TX	CSHCN
8BX924	Other	TX	BCBS

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

What is the NPI number for Matthew Sideman?

The National Provider Identifier (NPI) for Matthew Sideman is 1386614774, a Type 1 (individual) record in the CMS NPPES registry.

Where does Matthew Sideman practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-02.