Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Randall Carter Marx, M.D.

Orthopaedic Surgery Physician in San Antonio, TX · enumerated 2007.

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

National Provider Identifier

1790980068

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Registry record

Entity type Individual (Type 1)

Name Dr. Randall Carter Marx

Credential M.D.

Sex Male

Practice address 2829 Babcock Rd Ste 700, San Antonio, TX, 78229

Phone (210) 593-1480

Fax (210) 593-1483

Enumeration date Jun 18, 2007

Last updated in NPPES Jul 13, 2017

Taxonomy & licenses

207XX0004X Orthopaedic Foot and Ankle Surgery Physician Allopathic & Osteopathic Physicians · License N3168 (TX) Secondary

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License N3168 (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
219358301	Medicaid	TX	-
74-3003947	Other	-	TAX ID

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

What specialty is Randall Marx?

Randall Marx is registered in NPPES with the primary taxonomy of Orthopaedic Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-07-13.