Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Ana Miriam Ballester-Fiallo, MD

Individual provider Rheumatology Physician · NPI 1811007412

Dr. Ana Miriam Ballester-Fiallo, MD is a Rheumatology in San Antonio, Texas. Graduated from University of Puerto Rico School of Medicine in 1982, 44 years ago. Practices with Gmg Health Systems Associates PA, a 116-clinician group and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
44
Trained at
University of Puerto Rico School of Medicine
Licensed in
TX
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1303 McCullough Ave Ste 170
San Antonio, TX 78212-5609
Phone: (210) 921-3800
Fax: (210) 334-2851
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Rheumatology Physician (primary) Taxonomy 207RR0500X · Licence H3647 (TX)

Record details

NPI number1811007412
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 30, 2006
Last updated in NPPESJanuary 12, 2015

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyRHEUMATOLOGY
Medical schoolUNIVERSITY OF PUERTO RICO SCHOOL OF MEDICINE
Graduated 1982 (44 years in practice)
Group practice Gmg Health Systems Associates Pa — 116 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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