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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Guillermo Medrano Del Rosal, M.D.

Surgery Physician in San Antonio, TX · enumerated 2016.

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

National Provider Identifier

1922461789

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Registry record

Entity type Individual (Type 1)
Name Guillermo Medrano Del Rosal
Credential M.D.
Sex Male
Practice address San Antonio, TX, 78249
Phone (210) 874-3732
Fax (210) 874-3733
Enumeration date Mar 30, 2016
Last updated in NPPES Sep 26, 2023

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License MD474934 (PA) Secondary
282N00000X General Acute Care Hospital Hospitals Secondary
208600000X Surgery Physician Allopathic & Osteopathic Physicians · License T4977 (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
34051792 Other PA LICENSE NUMBER

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

Where does Guillermo Medrano Del Rosal practice?
The practice location on file with NPPES is in San Antonio, TX. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Guillermo Medrano Del Rosal?
The National Provider Identifier (NPI) for Guillermo Medrano Del Rosal is 1922461789, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-09-26.