HealthCareAtlasUSA

This site republishes official CMS/Medicare Care Compare data. It is not medical advice and does not recommend any specific hospital or treatment — for medical decisions, talk to a doctor.

Doctors / TX

SANTIAGO VILLARREAL, MD

NEPHROLOGY

Graduated: 1977

Also: INTERNAL MEDICINE

NPI: 1225035199

Practice Locations (2)

151 MEDICAL DR

PEARSALL, TX 780616604

8303344142

4151 CALLAGHAN RD

SAN ANTONIO, TX 782283419

2106471195

Source: CMS National Downloadable File, September 2026.

SANTIAGO VILLARREAL, MD | HealthCareAtlasUSA