Medicare Enrolled
Dr. Gansevoort Dunnington, M.D.
Thoracic Surgery · Saint Helena, CA
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
Consulting-driven
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. Dunnington 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. Dunnington?
Request a correction or review of any data shown here. Provider portal →
What this data tells you about Dr. Dunnington
Dr. Gansevoort Dunnington is a thoracic surgery specialist in Saint Helena, CA, with 18 years of NPI registration. Based on federal Medicare data, Dr. Dunnington performed 590 Medicare services across 587 unique beneficiaries.
Between the years covered by Open Payments, Dr. Dunnington received a total of $675,073 from 27 pharmaceutical and/or device companies across 575 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in thoracic surgery. The majority of payments are for consulting, which typically reflects recognized clinical expertise sought by manufacturers. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Dunnington 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 in practice
▲ Top 12% volume in CA
$675,073 industry payments
Medicare Practice Summary
Medicare Utilization ↗590
Medicare services
Top 12% in CA for thoracic surgery
587
Unique beneficiaries
$336
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~33 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 |
|---|---|---|---|
| New patient office visit, complex (60-74 min) | 128 | $178 | $476 |
| Telephone medical discussion, 21-30 minutes A telephone conversation with a physician lasting between 21 and 30 minutes. This code covers the time spent discussing medical matters over the phone. |
83 | $77 | $280 |
| 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. |
56 | $111 | $278 |
| 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. |
36 | $609 | $3,532 |
| Heart chamber reconstruction and electrical pathway alteration A surgical procedure to extensively reconstruct the upper chamber of the heart and alter its electrical pathway using an endoscope. |
35 | $1,498 | $4,668 |
| External EKG monitoring, 8-15 days Continuous external electrocardiogram recording and review over a period of 8 to 15 days to monitor heart rhythm. |
35 | $22 | $58 |
| Partial destruction and reconstruction of right upper heart chamber A surgical procedure involving the partial destruction and reconstruction of the right upper chamber of the heart. |
31 | $488 | $1,474 |
| Coronary artery bypass graft, 1 artery Surgical procedure to bypass a blocked coronary artery using a graft from another artery. This restores blood flow to the heart muscle. |
27 | $1,360 | $4,703 |
| 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. |
25 | $145 | $408 |
| Coronary artery bypass graft, 2 grafts A surgical procedure to restore blood flow to the heart by creating bypasses using two vein or artery grafts. |
20 | $329 | $1,022 |
| Endoscopic vein harvest A surgical procedure to remove a vein using an endoscope, which is a thin, lighted tube inserted through small incisions. |
19 | $13 | $41 |
| Telephone medical discussion, 11-20 minutes A phone conversation with a physician lasting between 11 and 20 minutes. |
16 | $57 | $198 |
| 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. |
15 | $133 | $392 |
| Bronchoscopy A diagnostic exam of the lung airways using an endoscope to visually inspect the inside of the lungs and airways. |
14 | $56 | $354 |
| Endoscopic removal of chest lymph nodes A surgical procedure to remove lymph nodes from the chest cavity using an endoscope, a thin tube with a camera inserted through small incisions. |
13 | $172 | $531 |
| 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. |
13 | $82 | $280 |
| Aortic valve replacement surgery Surgical replacement of the aortic valve using a heart-lung machine to maintain blood circulation during the procedure. |
12 | $1,542 | $5,748 |
| Routine 12-lead electrocardiogram (ECG) A test that records the electrical activity of the heart using at least 12 leads to produce a tracing. |
12 | $6 | $30 |
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.
16.1% high complexity
0.0% medium
83.9% routine
Industry Payment Transparency
Open Payments through 2024 ↗$675,073
Total received (2018-2024)
Avg $96,439/year across 7 years
Top 1% in CA for thoracic surgery
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
27
Companies
575
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.
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$665,091 (98.5%)
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$9,982 (1.5%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$142,985
2023
$61,286
2022
$130,902
2021
$169,112
2020
$47,278
2019
$53,511
2018
$69,998
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Pulse Biosciences, Inc.
$137,103
ATRICURE, INC.
$4,923
Edwards Lifesciences Corporation
$599
Medtronic, Inc.
$200
iRhythm Technologies, Inc.
$85
Becton, Dickinson and Company
$21
AngioDynamics, Inc.
$20
LeMaitre Vascular, Inc.
$18
Baxter Healthcare
$17
Top 3 companies account for 99.7% of 2024 payments
All-time payments by company (2018-2024) ›
ATRICURE, INC.
$280,052
AtriCure, Inc.
$241,738
Pulse Biosciences, Inc.
$137,103
Edwards Lifesciences Corporation
$11,730
Abbott Laboratories
$1,320
Medtronic, Inc.
$652
Intuitive Surgical, Inc.
$604
Medtronic Vascular, Inc.
$509
LivaNova USA, Inc.
$270
Bardy Diagnostics, Inc.
$169
Ethicon US, LLC
$157
Penumbra, Inc.
$150
CVRx, Inc.
$119
Ethicon Inc.
$98
AngioDynamics, Inc.
$94
iRhythm Technologies, Inc.
$85
KLS-Martin L.P.
$37
Philips Electronics North America Corporation
$36
Braemar Manufacturing, LLC
$22
Becton, Dickinson and Company
$21
Olympus America Inc.
$19
LeMaitre Vascular, Inc.
$18
Baxter Healthcare
$17
LSI SOLUTIONS INC
$15
Janssen Pharmaceuticals, Inc
$15
Avanos Medical
$12
Mallinckrodt LLC
$12
Top 3 companies account for 97.6% of all-time payments
Associated products mentioned in payments ›
(7999) SRC Undivided · 120V · 3F · 60Hz · ACC2 CARDIAC CRYOSURGICAL SYSTEM · ACC2 Cardiac Cryosurgical System · ALPHAVAC · ATRICLIP LAA EXCLUSION SYSTEM · ATRICURE ATRICLIP LAA EXCLUSION · ATRICURE CRYOICE CRYOABLATION SYSTEM (CRYO2) · ATRICURE CRYOICE CRYOSPHERE CRYOABLATION SYSTEM · ATRICURE CRYOSURGICAL SYSTEM · ATRICURE SYNERGY ABLATION SYSTEM · ATRICURE SYNERGY ABLATION SYSTEMS · AURORA EV-ICD MRI SURESCAN · AVALUS · Affinity Fusion · AngioVac · Aortic Tissue Valve - Perceval · AtriCure AtriClip LAA Exclusion System · AtriCure Cryosurgical System · AtriCure Synergy Ablation System · Avalus · Barostim Neo System · CARDIOBLATE · CONFIRM RX · COOLRAIL LINEAR PEN · COR KNOT · Cardiac Monitoring Suite · CardioMEMS HF System · Carnation Ambulatory Monitor · Carpentier-Edwards PERIMOUNT Magna Ease Pericardial Aortic Bioprosthesis · Carpentier-Edwards Physio II Annuloplasty Ring · CellFx · Cobra Fusion Ablation System · DISSECTOR · Da Vinci Surgical System · ECHELON FLEX Stapler · EDWARDS INTUITY Elite valve system · ENSITE PRECISION · EPI-SENSE GUIDED COAGULATION SYS · EPI-SENSE GUIDED COAGULATION SYSTEM WITH VISITRAX · Edwards SAPIEN 3 Transcatheter Heart Valve · Ellipse ICD · Ensite Cardiac Mapping System · Epi-Sense Guided Coagulation System with VisiTrax · Fortify Assura · GLIDEPATH TAPE · HMS Plus · Harmonic · INSPIRIS RESILIA AORTIC VALVE · INSPIRIS RESILIA aortic valve · ISOLATOR SURGICAL ABLATION SYSTEM · ISOLATOR TRANSPOLAR PEN · Indigo System · Irrigated Ablation Catheters · LIGASURE · MITRIS RESILIA Mitral Valve · MULTIFUNCTIONAL LINEAR PEN · Mitra Clip system · Models · Monarch Platform · Mosaic · Multifunctional linear pen · OFIRMEV · ON-Q* PUMP AND ACCESSORIES · PATCH · PERCLOT · PLEDGET AND INTRACARDIAC · PROLENE · PULSESELECT · Perceval · Progel Applicator Spray Tips · SIGNIA · SOFTIP GUIDE CANNULA · SPiN Thoracic Navigation System · SURGICEL NU-KNIT · SYNERGY ABLATION SYSTEM · TYKE · TactiCath Quartz CFA Catheter · Trifecta GT Tissue Heart Valve · XARELTO · Xience Sierra Coronary Stent · Zio monitor
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 →
The majority of payments (98%) are consulting fees, which typically reflect recognized clinical expertise sought by manufacturers. Total industry engagement is in the top 1% for thoracic surgery in CA.
Geographic Context
Thoracic surgerists within 10 mi
11
Per 100K population
8.1
County median income
$108,970
Nearest hospital
ADVENTIST HEALTH ST HELENA
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 reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Dunnington is a clinical cardiology specialist, with above-average Medicare volume (top 12% in CA), with consulting-driven industry engagement in the top 1% of CA peers, 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. Dunnington experienced with new patient office visit, complex (60-74 min)?
Based on Medicare claims data, Dr. Dunnington performed 128 new patient office visit, complex (60-74 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. Dunnington receive payments from pharmaceutical companies?
Yes. Dr. Dunnington received a total of $675,073 from 27 companies across 575 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. Dunnington's costs compare to other thoracic surgerists in Saint Helena?
Dr. Dunnington's average Medicare payment per service is $336. 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. Dunnington) 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 →
Explore related providers
Same specialty & city
Thoracic Surgerists in Saint Helena
Browse thoracic surgerists in Saint Helena ranked by procedure volume and transparency data.
Highest volume
Top Thoracic Surgerists in CA
Thoracic surgerists ranked by total Medicare services performed statewide.
Industry payments
Pharma Payments to Thoracic Surgerists in CA
Which CA thoracic surgerists receive the most from drug and device companies.
By company
ATRICURE, INC. Payments to Doctors
See all physicians who received payments from ATRICURE, INC.
By company
AtriCure, Inc. Payments to Doctors
See all physicians who received payments from AtriCure, Inc.
By company
Pulse Biosciences, Inc. Payments to Doctors
See all physicians who received payments from Pulse Biosciences, Inc.
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. 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.
Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology