Dr. Mark Harrison, MD
What this data tells you about Dr. Harrison
Dr. Mark Harrison is a radiology - diagnostic in McAllen, TX, with 20 years in practice. Based on federal Medicare data, Dr. Harrison performed 7,731 Medicare services across 479 unique beneficiaries.
Between the years covered by Open Payments, Dr. Harrison received a total of $3,501 from 64 pharmaceutical and/or device companies across 218 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in radiology - diagnostic. 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. Harrison 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 |
|---|---|---|---|
| Contrast dye for imaging (iodine-based) | 5,900 | $0 | $0 |
| CT guidance for radiation therapy | 558 | $92 | $477 |
| Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session | 503 | $270 | $1,399 |
| Continuing radiation therapy consultation per week | 144 | $65 | $305 |
| Radiation treatment management, 5 treatment sessions | 141 | $147 | $760 |
| Calculation of radiation therapy dose | 134 | $50 | $261 |
| Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries | 85 | $239 | $1,200 |
| Nuclear medicine study from skull base to mid-thigh with ct scan | 84 | $1,089 | $5,709 |
| Ct scan of chest before and after contrast | 33 | $82 | $948 |
| Design and construction of complex radiation treatment device | 27 | $93 | $500 |
| New patient office visit, complex (60-74 min) | 27 | $154 | $546 |
| Ct scan of abdomen and pelvis before and after contrast | 24 | $161 | $1,445 |
| Complex radiation therapy planning | 17 | $129 | $676 |
| Obtaining data needed to develop the optimal radiation treatment, 1 treatment area | 14 | $204 | $1,077 |
| High precision radiation therapy planning | 14 | $1,394 | $7,424 |
| Design and construction of radiation treatment device for high precision radiation therapy | 14 | $354 | $2,012 |
| Ct scan of abdomen and pelvis without contrast | 12 | $67 | $871 |
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
3.7 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. Harrison is a mixed practice specialist, with above-average Medicare volume (top 16% in TX), and high industry engagement (low-engagement, top 20%), with 20 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
Is Dr. Harrison experienced with contrast dye for imaging (iodine-based)?
Does Dr. Harrison receive payments from pharmaceutical companies?
How do Dr. Harrison's costs compare to other radiology - diagnostics in McAllen?
What does Data Coverage mean?
Is this data up to date?
Explore related providers
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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