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Downtown Clinic

Downtown Clinic

In the Summer of 2012, GMG/Downtown was expanded to add more exam room space and is now accepting/welcoming non-City of San Antonio employees, as well.

Originally opened in 2008 to serve as the official clinic for City of San Antonio, GMG/Downtown is now performs pre-employment drug testings, immunizations, random drug and alcohol screenings of City employees, and treats minor medical injuries and illnesses. Additionally, the clinic provides wellness events for the City.


1303 McCullough Ave.
San Antonio,TX 78212


Monday through Friday: 8:00 a.m - 5:00 p.m.

Telephone Numbers

Main Telephone:

Medical Appointments:
210 921-3803

Worker’s Comp Appointments:
210-921-COSA (2672)

Providers At This Location

Ana Ballester Fiallo, MD
Board Certified Rheumatology and Internal Medicine
Ralph A. De La Rosa, MD
Board Certified Family Practice