Medicare Enrolled
Dr. Winston Marshall, M.D.
Cardiovascular Disease · Denison, TX
Practice pattern: Electrophysiology & Cardiac— Practice combining electrophysiology and cardiac services
Low-engagement
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating. This page presents federal public records about Dr. Marshall from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
Are you Dr. Marshall? Request a correction or review of any data shown here. Provider portal →
What this data tells you about Dr. Marshall
Dr. Winston Marshall is a cardiovascular disease in Denison, TX, with 19 years in practice. Based on federal Medicare data, Dr. Marshall performed 4,659 Medicare services across 3,526 unique beneficiaries.
Between the years covered by Open Payments, Dr. Marshall received a total of $14,175 from 55 pharmaceutical and/or device companies across 514 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in cardiovascular disease. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Marshall is Very High — reflecting how much public federal data is available about this provider. This is not a quality rating. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
✓ 19 years in practice▲ Top 19% volume in TX$ $14,175 industry payments
Medicare Practice Summary
Medicare Utilization ↗4,659
Medicare services
Top 19% in TX for cardiovascular disease
3,526
Unique beneficiaries
$59
Avg. Medicare payment
Medicare patients only (65+ / disabled) · Not a quality rating · How to read this →
~245 Medicare services per year of practice
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 |
|---|---|---|---|
| Office visit, established patient (30-39 min) | 1,157 | $86 | $238 |
| EKG interpretation and report | 783 | $6 | $30 |
| Regadenoson injection (Lexiscan) for heart stress test | 288 | $43 | $209 |
| Electrocardiogram (EKG), 12-lead | 277 | $9 | $51 |
| Echocardiogram, transthoracic | 253 | $133 | $695 |
| Telephone medical discussion with physician, 11-20 minutes | 234 | $63 | $212 |
| Remote pacemaker/defibrillator monitoring, 90 days | 216 | $15 | $84 |
| New patient office visit (45-59 min) | 186 | $110 | $310 |
| Remote pacemaker monitoring, 90 days | 169 | $21 | $109 |
| Hospital follow-up visit, moderate complexity | 130 | $60 | $186 |
| Initial hospital admission, moderate complexity | 120 | $100 | $352 |
| Programming of dual lead pacemaker system | 111 | $46 | $299 |
| Evaluation of implantable heart and blood vessel monitoring system, remote up to 30 days | 85 | $18 | $95 |
| Technetium tc-99m tetrofosmin, diagnostic, per study dose | 80 | $50 | $491 |
| Nuclear medicine studies of heart muscle at rest and with stress and spect | 78 | $321 | $1,599 |
| Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician | 78 | $47 | $258 |
| Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes | 53 | $9 | $128 |
| Evaluation of single, dual, or multiple lead implantable defibrillator system, remote up to 90 days | 47 | $26 | $181 |
| Programming of multiple lead implantable defibrillator system | 35 | $73 | $401 |
| Ultrasound of both sides of head and neck blood flow | 35 | $133 | $704 |
| 3d radiographic procedure | 31 | $7 | $220 |
| Electrocardiogram (ecg) up to 30 days continuous with review and report by health care professional | 31 | $17 | $130 |
| Evaluation of implantable heart and blood vessel monitoring system | 27 | $32 | $207 |
| Routine electrocardiogram (ecg) using at least 12 leads with tracing | 18 | $4 | $48 |
| Heart rhythm recording continous external ekg over more than 48 hours up to 7 days | 16 | $9 | $96 |
| Heart rhythm review, and interpretation of continous external ekg over more than 48 hours up to 7 days | 16 | $17 | $98 |
| Cardiac catheterization | 15 | $424 | $2,184 |
| Programming of multiple lead pacemaker system | 14 | $59 | $317 |
| Ultrasound of heart with color-depicted blood flow, rate and valve function | 14 | $2 | $28 |
| Insertion of tube in coronary artery for diagnosis with review by radiologist | 14 | $126 | $841 |
| Heart muscle strain imaging | 13 | $26 | $139 |
| Heart rhythm recording of continous external ekg over 8-15 days | 12 | $8 | $96 |
| Ultrasound of heart, follow-up | 12 | $74 | $361 |
| Heart rhythm review and interpretation of continous external ekg over 8-15 days | 11 | $17 | $98 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. A higher procedure volume generally indicates more experience with that procedure.
18.8% high complexity
10.8% medium
70.4% routine
Industry Payment Transparency
Open Payments through 2024 ↗$14,175
Total received (2018-2024)
Avg $2,025/year across 7 years
Top 24% in TX for cardiovascular disease
55
Companies
514
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →
Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$13,924 (98.2%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$251 (1.8%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024$1,789
2023$1,538
2022$2,047
2021$2,161
2020$614
2019$2,657
2018$3,367
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Abbott Laboratories
$2,912
Medtronic Vascular, Inc.
$1,000
HeartFlow, Inc.
$758
Janssen Pharmaceuticals, Inc
$742
Novartis Pharmaceuticals Corporation
$691
Merck Sharp & Dohme LLC
$648
Amgen Inc.
$624
E.R. Squibb & Sons, L.L.C.
$525
SANOFI-AVENTIS U.S. LLC
$446
PFIZER INC.
$410
AstraZeneca Pharmaceuticals LP
$394
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$393
Boston Scientific Corporation
$386
Medtronic, Inc.
$385
HEARTFLOW, INC.
$315
Gilead Sciences, Inc.
$284
Shockwave Medical, Inc
$244
Astellas Pharma US Inc
$240
ShockWave Medical, Inc
$231
ABIOMED
$215
CVRx, Inc.
$176
Chiesi USA, Inc.
$158
Boehringer Ingelheim Pharmaceuticals, Inc.
$151
Genentech USA, Inc.
$129
SCPHARMACEUTICALS INC.
$128
Novo Nordisk Inc
$97
Philips North America LLC
$96
Amarin Pharma Inc.
$96
Lexicon Pharmaceuticals, Inc.
$96
Sunovion Pharmaceuticals Inc.
$92
Itamar Medical Inc
$89
Tactile Systems Technology Inc
$86
PORTOLA PHARMACEUTICALS, INC.
$83
Innovation Technologies Inc
$79
Esperion Therapeutics, Inc.
$75
Relypsa, Inc.
$75
ARALEZ PHARMACEUTICALS US INC.
$73
Cardiovascular Systems Inc.
$56
Actelion Pharmaceuticals US, Inc.
$53
Merck Sharp & Dohme Corporation
$48
Kiniksa Pharmaceuticals, Ltd.
$46
Impulse Dynamics (USA) Inc.
$44
AngioDynamics, Inc.
$42
Silk Road Medical, Inc.
$37
iRhythm Technologies, Inc.
$36
Edwards Lifesciences Corporation
$33
Kowa Pharmaceuticals America, Inc.
$23
Philips Electronics North America Corporation
$22
Bardy Diagnostics, Inc.
$22
GE HealthCare
$20
Cook Medical LLC
$15
Osprey Medical Inc
$15
EKOS Corporation
$13
ARBOR PHARMACEUTICALS, INC.
$12
Regeneron Healthcare Solutions, Inc.
$11
Top 3 companies account for 32.9% of total payments
Associated products mentioned in payments ›
(AM5) Lead management · ACCULINK · ANDEXXA · ASSURITY · AVEIR · AZURE XT DR MRI SURESCAN · Allure Quadra RF CRT Pacemaker · AlphaVac · Amplia MRI · AngioVac · Arcalyst · Asahi Fielder coronary guide wire · Assurity Pacemaker · Azure · BEVYXXA · BRILINTA · Barostim Neo System · CAMZYOS · CARDENE · CARDIOMEMS · CHANTIX · CLEVIPREX · CONFIRM RX · CardioMEMS HF System · CareLink · Carnation Ambulatory Monitor · Claria MRI · Cobalt · Confirm Rx · Connectivity and Remote care · Cook Medical Zilver PTX · CoreValve Evolut · Corlanor · Coronary Orbital Atherectomy System · DyeVert · EKOSONIC · ELIQUIS · ENROUTE Transcarotid Neuroprotection System · ENTRESTO · Edarbyclor · Edwards SAPIEN 3 Transcatheter Heart Valve · Ellipse ICD · Evera · FARXIGA · FFRct · FUROSCIX · Flexitouch Plus · Fortify Assura · GALLANT · GENERAL TACHY · GENERAL VASCULAR INTERVENTION · GENERAL - VASCULAR INTERVENTION · Gallant CRT-D · General - Therapies · HawkOne · HeartWare HVAD · Hi-Torque Advance guide wire · IGT D Coronary · IN.PACT Admiral · IRRISEPT · Impella · Inpefa · Irrisept · JARDIANCE · JOT DX · KENGREAL · LEQVIO · LEXISCAN · LONHALA MAGNAIR · LifeVest · Livalo · MAMBA · MICRA · MULTAQ · Micra · MyCareLink · NEXLETOL · OPSUMIT MACITENTAN · OPTIMIZER · OPTIS · Optis Coronary Imaging System · Ozempic · PRADAXA · PRALUENT · PREVNAR 20 · QT Vascular Chocolate PTA Balloon · QUADRA ASSURA · Quadra Allure MP RF CRT Pacemkr · Quadra Assura CRT Defibrillator · RYBELSUS · Ranexa · Repatha · Resolute · Reveal LINQ · Rybelsus · SHOCKWAVE IVL SYSTEM WITH THE SHOCKWAVE C2 CORONARY IVL CATHETER · Telescope · VERQUVO · VYNDAQEL · Vascepa · Vascular Lithotripsy · Veltassa · WATCHMAN · WATCHMAN Access System · WatchPAT · WatchPATONE · XARELTO · XIENCE SIERRA · Xience Sierra Coronary Stent · Xience Sierra Coronary Stent System · Xofluza · ZIO Patch · ZIO XT Patch · ZONTIVITY
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
Most payments (98%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Equivalent to $304 per 100 Medicare services performed
Geographic Context
Cardiovascular Diseases within 10 mi
4
Per 100K population
2.9
County median income
$70,455
Nearest hospital
TEXOMA MEDICAL CENTER
0.0 mi
0.0 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. Marshall is a electrophysiology & cardiac specialist, with above-average Medicare volume (top 19% in TX), 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
Is Dr. Marshall experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Marshall performed 1,157 office visit, established patient (30-39 min) services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Marshall receive payments from pharmaceutical companies?
Yes. Dr. Marshall received a total of $14,175 from 55 companies across 514 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Marshall's costs compare to other cardiovascular diseases in Denison?
Dr. Marshall's average Medicare payment per service is $59. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Marshall) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating a long track record of practice, Medicare participation, and industry disclosure. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →
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About this page
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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