Dr. Gary Maszak, MD
What this data tells you about Dr. Maszak
Dr. Gary Maszak is an interventional cardiology in San Antonio, TX, with 19 years in practice. Based on federal Medicare data, Dr. Maszak performed 1,179 Medicare services across 882 unique beneficiaries.
Between the years covered by Open Payments, Dr. Maszak received a total of $1,173 from 12 pharmaceutical and/or device companies across 32 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in interventional cardiology. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Maszak is Very High — reflecting how much public federal data is available about this provider. This is not a quality rating. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
Medicare Practice Summary
Medicare Utilization ↗Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| EKG interpretation and report | 550 | $6 | $23 |
| Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes | 213 | $9 | $32 |
| Cardiac catheterization | 105 | $171 | $819 |
| Coronary stent placement | 98 | $396 | $1,503 |
| Initial hospital admission, moderate complexity | 62 | $98 | $335 |
| Initial hospital admission, high complexity | 46 | $131 | $492 |
| Insertion of tube in right and left heart chambers and coronary artery for diagnosis with review by radiologist | 44 | $242 | $1,027 |
| Ultrasound evaluation of heart blood vessel during diagnosis or treatment, initial vessel | 29 | $42 | $690 |
| Insertion of tube in left lower heart chamber, coronary artery and bypass graft for diagnosis with review by radiologist | 21 | $196 | $922 |
| Removal of plaque and blood clot, insertion of stent and/or balloon dilation of single vessel | 11 | $494 | $1,685 |
Industry Payment Transparency
Open Payments through 2024 ↗Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
Payments by company (2024)
Associated products mentioned in payments ›
Most payments (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
3.2 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This measures how much public data is available about a provider — not how good they are. How we calculate this →
Summary
Dr. Maszak is a interventional cardiology specialist, with moderate Medicare volume, and low-engagement industry engagement, with 19 years of practice experience.
This summary is auto-generated from federal data. It describes data availability and patterns — not clinical quality. Read our methodology →
Frequently Asked Questions
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All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. The Transparency Score measures data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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