# Ralph A Defronzo, MD

Source: https://ourhealthnetwork.com/doctor/ralph-defronzo-md-1851408843
NPI: 1851408843
Data source: CMS NPI Registry (NPPES), refreshed monthly

## Quick facts

Ralph A Defronzo, MD is a endocrinology based in San Antonio, TX with NPI 1851408843.

## Profile

- Primary specialty: Endocrinology
- Credential: MD
- Gender: Male
- NPI: 1851408843 ([NPPES record](https://npiregistry.cms.hhs.gov/provider-view/1851408843))

## Practice and contact

- Address: 701 S Zarzamora St, San Antonio, TX, 782075209
- Phone: (210) 358-7500

## Insurance accepted (8 networks)

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

- [HCSC: BCBS Texas](https://ourhealthnetwork.com/insurance/hcsc-bcbs-texas) — 36 plans
- [Cigna](https://ourhealthnetwork.com/insurance/cigna) — 17 plans
- [UnitedHealthcare](https://ourhealthnetwork.com/insurance/unitedhealthcare) — 12 plans
- [Aetna](https://ourhealthnetwork.com/insurance/aetna) — 10 plans
- [Humana](https://ourhealthnetwork.com/insurance/humana) — 9 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

To verify a specific plan covers Ralph A Defronzo, use the [OurHealthNetwork Insurance Matcher](https://ourhealthnetwork.com/tools/insurance-matcher?npis=1851408843).

## Industry payments disclosure (CMS Open Payments)

Per CMS Open Payments data (most recent year 2024), this provider has received 64 disclosed payments from medical industry sources totaling approximately $115,431.

Largest disclosed payer: Corcept Therapeutics ($65,974 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 Endocrinology doctors in SAN ANTONIO, TX](https://ourhealthnetwork.com/endocrinology/tx/san-antonio)
- [Find insurance plans that cover this doctor](https://ourhealthnetwork.com/tools/insurance-matcher?npis=1851408843)
- [Browse all 5.5M US healthcare providers](https://ourhealthnetwork.com/find-doctors)
- [About our data and methodology](https://ourhealthnetwork.com/methodology)