Medicare Enrolled
Dr. Mark Villalon, MD
Interventional Cardiology · Napa, CA
Practice pattern: Cardiac & Cardiac
— Practice combining cardiac and cardiac services
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. Villalon 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 →
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What this data tells you about Dr. Villalon
Dr. Mark Villalon is an interventional cardiology specialist in Napa, CA, with 18 years of NPI registration. Based on federal Medicare data, Dr. Villalon performed 2,982 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Villalon received a total of $10,132 from 34 pharmaceutical and/or device companies across 223 payment records. A record can group multiple payments. These transfers are publicly reported through CMS Open Payments. Disclosure alone does not establish their effect on care. A reliable breakdown by payment category is not available in this snapshot. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Villalon is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
✓ 18 years of NPI registration
▲ Top 42% volume in CA
$10,132 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗2,982
Medicare services
Top 42% in CA for interventional cardiology
Not available
Unique patients (not deduplicated)
$94
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
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) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
868 | $100 | $321 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
436 | $116 | $644 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
196 | $150 | $423 |
| Remote monitoring of implantable heart device, up to 30 days Remote evaluation of an implanted heart or blood vessel monitoring system over a period of up to 30 days. |
148 | $19 | $75 |
| Initial hospital admission, high complexity Initial hospital inpatient or observation care for a new patient involving high-level medical decision making, with at least 75 minutes total time on the date of the encounter. |
101 | $143 | $565 |
| Remote pacemaker/defibrillator monitoring, 90 days Remote evaluation of a pacemaker or implantable defibrillator system within 90 days of the last check. |
99 | $20 | $84 |
| Sedation by physician, initial 15 minutes Administration of a drug to induce depression of consciousness by the physician performing a procedure. This code covers the initial 15 minutes of sedation for patients aged 5 years or older. |
95 | $10 | $159 |
| Hospital follow-up visit, moderate complexity Follow-up hospital visit for an existing patient involving moderate medical decision making. The visit requires at least 35 minutes of time spent on the date of service. |
89 | $66 | $202 |
| Regadenoson injection (Lexiscan) for heart stress test An injection of regadenoson, a medication used to stress the heart during diagnostic testing. |
88 | $44 | $98 |
| Electrocardiogram (EKG), 12-lead A standard heart rhythm test using at least 12 leads to record electrical activity. A healthcare provider interprets the results and provides a written report. |
79 | $10 | $51 |
| Remote pacemaker monitoring, 90 days Remote assessment of a pacemaker system, including single, dual, multiple lead, or leadless devices, performed up to 90 days apart. |
77 | $22 | $88 |
| Hospital follow-up visit, high complexity Subsequent hospital inpatient or observation care for an existing patient involving high-level medical decision making, with at least 50 minutes total time on the date of the encounter. |
56 | $101 | $292 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
48 | $107 | $472 |
| Ultrasound of heart blood vessel or graft An ultrasound exam to evaluate blood flow in a heart blood vessel or graft, including a radiologist's review of the initial vessel. |
46 | $76 | $259 |
| Remote cardiac rhythm monitor evaluation, up to 30 days Review and analysis of data from a remote cardiac rhythm monitoring system over a period of up to 30 days. |
44 | $21 | $76 |
| Ultrasound guidance for blood vessel access Use of ultrasound imaging to help locate and access a blood vessel. This guidance assists healthcare providers in performing procedures such as inserting IV lines or drawing blood. |
43 | $11 | $112 |
| 2-day continuous ECG monitoring A continuous electrocardiogram recording that captures heart activity over a 48-hour period. This test helps detect irregular heart rhythms or other cardiac issues that may not appear during a standard, short-term ECG. |
43 | $17 | $83 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
41 | $71 | $219 |
| Critical care, first 30-74 min Emergency medical care for a critically ill or injured patient lasting between 30 and 74 minutes. This service involves direct patient care and medical decision making to stabilize the patient. |
40 | $177 | $796 |
| Follow-up heart ultrasound An ultrasound of the heart performed to monitor or reassess a previously identified condition or treatment progress. |
39 | $21 | $311 |
| Coronary angiography A procedure to insert a tube into a coronary artery to capture diagnostic images of the heart's blood vessels. |
38 | $147 | $2,856 |
| Office visit, established patient (10-19 min) An office visit for an existing patient lasting 10 to 19 minutes. The visit involves medical evaluation and management of the patient's condition. |
38 | $46 | $135 |
| Continuous ECG monitoring, up to 30 days Continuous heart rhythm monitoring for up to 30 days, including professional review and reporting of the results. |
35 | $22 | $74 |
| Coronary stent placement A procedure to insert a stent into a coronary artery or its branch to keep it open, using balloon dilation during the process. |
31 | $413 | $1,595 |
| Cardiac catheterization | 30 | $185 | $3,334 |
| Initial hospital admission, moderate complexity Initial hospital inpatient or observation care for a new patient involving moderate-level medical decision making, with at least 55 minutes total time on the date of the encounter. |
28 | $106 | $383 |
| Nuclear stress test of heart muscle A nuclear medicine imaging test that evaluates blood flow to the heart muscle at rest and during stress using a special camera. |
27 | $429 | $1,514 |
| Pacemaker programming, dual lead system Adjustment and configuration of a dual-lead pacemaker device to ensure proper operation and settings. |
27 | $69 | $217 |
| Exercise or drug-induced heart stress test with ECG A heart stress test performed using exercise or medication while monitoring the electrocardiogram under physician supervision and review. |
16 | $55 | $214 |
| New patient office visit, complex (60-74 min) | 14 | $138 | $595 |
| Transcatheter aortic valve replacement via femoral artery A minimally invasive procedure to replace a diseased aortic heart valve using a catheter inserted through the skin and femoral artery. |
11 | $550 | $3,268 |
| Transesophageal echocardiogram An ultrasound of the heart performed using a probe inserted into the esophagus to obtain detailed images of heart structures and function. |
11 | $90 | $753 |
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. These counts do not measure clinical quality or years of experience.
23.8% high complexity
9.1% medium
67.1% routine
Industry Payment Transparency
Open Payments through 2024 ↗$10,132
Total received (2018-2024)
Avg $1,447/year across 7 years
Top 40% in CA for interventional cardiology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
34
Companies
223
Payment records
Payments are publicly reported; disclosure does not establish legality · Not evidence of wrongdoing · How to interpret →
Payment categories are unavailable while the source breakdown is being rebuilt. Company and year totals do not identify how much belongs to each category.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$1,179
2023
$2,203
2022
$932
2021
$1,436
2020
$656
2019
$1,510
2018
$2,216
Payments by company (2024)
Inari Medical, Inc.
$499
BIOTRONIK INC.
$176
Abbott Laboratories
$111
Philips North America LLC
$64
Kestra Medical Technology Services, Inc.
$63
Boston Scientific Corporation
$54
Baxter Healthcare
$51
Biosense Webster, Inc.
$37
Janssen Pharmaceuticals, Inc
$31
ATRICURE, INC.
$28
HEARTFLOW, INC.
$28
Novartis Pharmaceuticals Corporation
$19
AstraZeneca Pharmaceuticals LP
$18
Top 3 companies account for 66.8% of 2024 payments
All-time payments by company (2018-2024) ›
Medtronic Vascular, Inc.
$2,060
Inari Medical, Inc.
$1,643
Edwards Lifesciences Corporation
$1,387
BIOTRONIK INC.
$1,294
Abbott Laboratories
$812
Philips Electronics North America Corporation
$497
Impulse Dynamics (USA) Inc.
$345
Janssen Pharmaceuticals, Inc
$315
ABIOMED
$264
ATRICURE, INC.
$216
Novartis Pharmaceuticals Corporation
$174
Boston Scientific Corporation
$139
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$115
Viz.ai, Inc.
$87
Biosense Webster, Inc.
$71
Merck Sharp & Dohme LLC
$65
Philips North America LLC
$64
Kestra Medical Technology Services, Inc.
$63
CathWorks, Inc.
$60
Medtronic, Inc.
$57
Merck Sharp & Dohme Corporation
$52
Baxter Healthcare
$51
Esperion Therapeutics, Inc.
$45
Cardiovascular Systems Inc.
$41
AstraZeneca Pharmaceuticals LP
$38
HEARTFLOW, INC.
$28
Ethicon US, LLC
$25
Scilex Pharmaceuticals Inc.
$22
Kiniksa Pharmaceuticals, Ltd.
$21
E.R. Squibb & Sons, L.L.C.
$19
Astellas Pharma US Inc
$18
CHIESI USA, INC.
$18
SANOFI-AVENTIS U.S. LLC
$17
Arrow International, Inc.
$11
Top 3 companies account for 50.2% of all-time payments
Associated products mentioned in payments ›
(5044) MCOT · (5091) Amb Mon & Diag Und · (6361) Core Mobile · (6585) Omniwire · (8333) IGT D Coronary · (9266) ELCA · AMPLATZER AMULET · AMVIA EDGE · ATRICLIP LAA EXCLUSION SYSTEM · AVVIGO Guidance System · Acticor · Acticor 7 VR-T DX · Assure WCD · BIOMONITOR · BioMonitor · BodyGuardian · CARTO 3 · CLEVIPREX 25MG/50ML · CT THROMBECTOMY SYSTEM KIT · CardioMEMS HF System · Catheter - Turnpike · Diamondback Peripheral · EDWARDS SAPIEN 3 TRANSCATHETER HEART VALVE (THV) · ELIQUIS · ENTRESTO · EPI-SENSE GUIDED COAGULATION SYSTEM WITH VISITRAX · Edora · Edora 8 DR-T · Edwards SAPIEN 3 Transcatheter Heart Valve · Edwards SAPIEN 3 Ultra Transcatheter Heart Valve · FARXIGA · FFRangio · FFRangio System · FFRct · FLOWTRIEVER CATHETER · General - Therapies · Hillrom - Carnation Ambulatory Monitor · IGT D Coronary · IGT_D Coronary · Impella · LEQVIO · LEXISCAN · LifeVest · MERLIN@HOME · MITRACLIP · MULTAQ · Micra · Mitra Clip system · MyCareLink · NEXLETOL · OPTIMIZER · Orsiro Mission · PERCLOSE PROGLIDE · PROLENE · Perclose ProGlide suture mediated closure system · Perclose ProStyle · QDOT MICRO Catheter · ROTAPRO · Reveal LINQ · Rivacor · Rivacor 7 DR-T · S · SUPERA · Supera peripheral stent system · TYRX · VENASEAL · VERQUVO · VenaSeal · Viz.AI LVO · XARELTO · ZTLido
Should you be concerned? Industry payments are disclosed through CMS Open Payments. Disclosure alone does not establish their purpose, legality, or effect on care. 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 →
Geographic Context
Interventional cardiologists in nearby ZIP areas
4
County median income
$108,970
Nearest hospital to ZIP centroid (approximate)
PROVIDENCE QUEEN OF THE VALLEY MEDICAL CENTER
0.0 mi
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | NPPES snapshot; verify current record |
| Medicare Enrollment | ✓ PECOS | PECOS snapshot |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not included | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Villalon is a cardiac & cardiac specialist, with moderate Medicare volume, with 18 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Villalon experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Villalon performed 868 office visit, established patient (30-39 min) services. These records cover Medicare fee-for-service activity, including eligible younger beneficiaries; they do not measure total practice volume or clinical quality.
Does Dr. Villalon receive payments from pharmaceutical companies?
Yes. Dr. Villalon received a total of $10,132 from 34 companies across 223 payment records. A record can group multiple payments. These transfers are publicly disclosed through CMS Open Payments. Disclosure alone does not establish their legality or effect on care. 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. Villalon's costs compare to other interventional cardiologists in Napa?
Dr. Villalon's average Medicare payment per service is $94. 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. Villalon) 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 the presence of registry, enrollment, activity or payment records, not verified experience or clinical quality. 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?
Source publication dates and the snapshots loaded on this site can differ. Rebuilding a page does not refresh its source records. Check the Medicare reporting year and the payment interval shown above; consult the linked official sources for newer releases and current registry details. See our data freshness policy →
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About this page
This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: 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. Data Coverage reflects 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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