Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Robert Esterl, MD

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

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

National Provider Identifier

1538276522

Verified

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Registry record

Entity type Individual (Type 1)

Name Robert Esterl

Credential MD

Sex Male

Practice address 4502 Medical Dr, San Antonio, TX, 78229

Phone (210) 257-1400

Enumeration date Aug 24, 2006

Last updated in NPPES May 6, 2009

Taxonomy & licenses

204F00000X Transplant Surgery Physician Allopathic & Osteopathic Physicians · License J5756 (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
102946401	Medicaid	TX	-
102946402	Other	TX	CIDC

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 Robert Esterl?

The National Provider Identifier (NPI) for Robert Esterl is 1538276522, a Type 1 (individual) record in the CMS NPPES registry.

Where does Robert Esterl practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-05-06.