Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Robert U Hartzler, M.D.

Orthopaedic Surgery Physician in San Antonio, TX · enumerated 2008.

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

National Provider Identifier

1780849372

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Registry record

Entity type Individual (Type 1)

Name Robert U Hartzler

Credential M.D.

Sex Male

Practice address 19138 Us Highway 281 N Ste 200, San Antonio, TX, 78258

Phone (210) 804-5630

Enumeration date Jul 23, 2008

Last updated in NPPES Oct 28, 2026

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 51930 (MN) Secondary

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License ME115054 (FL) Secondary

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License P7925 (TX) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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 is the NPI number for Robert Hartzler?

The National Provider Identifier (NPI) for Robert Hartzler is 1780849372, a Type 1 (individual) record in the CMS NPPES registry.

Where does Robert Hartzler 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 2026-10-28.