# Ana Myriam Ballester Fiallo, MD

Source: https://ourhealthnetwork.com/doctor/ana-ballesterfiallo-md-1811007412
NPI: 1811007412
Data source: CMS NPI Registry (DAC), refreshed monthly

## Quick facts

Ana Myriam Ballester Fiallo, MD is a rheumatology based in San Antonio, TX practicing at Gmg Health Systems Associates Pa with NPI 1811007412.

## Profile

- Primary specialty: Rheumatology
- Credential: MD
- Gender: Female
- Medical school: UNIVERSITY OF PUERTO RICO SCHOOL OF MEDICINE
- Graduation year: 1982
- NPI: 1811007412 ([NPPES record](https://npiregistry.cms.hhs.gov/provider-view/1811007412))

## Practice and contact

- Practice name: Gmg Health Systems Associates Pa
- Address: 1303 Mccullough Ave, Suite 170, San Antonio, TX, 782125603
- Phone: (210) 921-3800
- Group practice size: 115 members

## Insurance accepted (9 networks)

This provider is in network with the following insurance carriers, based on federal Transparency in Coverage filings and FHIR provider directories:

- [Cigna](https://ourhealthnetwork.com/insurance/cigna) — 18 plans
- [Aetna](https://ourhealthnetwork.com/insurance/aetna) — 15 plans
- [HCSC: BCBS Texas](https://ourhealthnetwork.com/insurance/hcsc-bcbs-texas) — 11 plans
- [UnitedHealthcare](https://ourhealthnetwork.com/insurance/unitedhealthcare) — 11 plans
- [Humana](https://ourhealthnetwork.com/insurance/humana) — 8 plans
- [UMR](https://ourhealthnetwork.com/insurance/umr) — 3 plans
- [Oxford Health Plans (UHC)](https://ourhealthnetwork.com/insurance/oxford-health-plans-uhc) — 2 plans
- [Highmark BCBS Pennsylvania](https://ourhealthnetwork.com/insurance/highmark-bcbs-pennsylvania) — 1 plan
- [Medicare](https://ourhealthnetwork.com/insurance/medicare) — 1 plan

To verify a specific plan covers Ana Myriam Ballester Fiallo, use the [OurHealthNetwork Insurance Matcher](https://ourhealthnetwork.com/tools/insurance-matcher?npis=1811007412).

## Industry payments disclosure (CMS Open Payments)

Per CMS Open Payments data (most recent year 2024), this provider has received 101 disclosed payments from medical industry sources totaling approximately $2,885.

Largest disclosed payer: ABBVIE INC. ($949 cumulative).

Source: CMS Open Payments program (federal financial-transparency dataset). Industry payment disclosures do not imply any wrongdoing; many are legitimate consulting fees, research support, or speaker honoraria.

## Related on OurHealthNetwork

- [More Rheumatology doctors in SAN ANTONIO, TX](https://ourhealthnetwork.com/rheumatology/tx/san-antonio)
- [Find insurance plans that cover this doctor](https://ourhealthnetwork.com/tools/insurance-matcher?npis=1811007412)
- [Browse all 5.5M US healthcare providers](https://ourhealthnetwork.com/find-doctors)
- [About our data and methodology](https://ourhealthnetwork.com/methodology)