Has Wendy Tzou, MD received payments from drug or device companies?

Yes. Drug and device makers reported $349,696 in general payments to Wendy Tzou, MD across 660 transactions between 2019–2025. Most Open Payments records nationally are meals worth under $20; a reported payment is not evidence of wrongdoing.

Does a payment mean Wendy Tzou, MD did something wrong?

No. Federal law requires drug and device makers to report almost every transfer of value to a physician, including a $14 sandwich at a lunch presentation. Consulting fees, research funding and royalties to device inventors are ordinary, legal parts of medicine. This site reports what was disclosed; it makes no allegation.

Where does this information about Wendy Tzou, MD come from?

The U.S. Centers for Medicare & Medicaid Services. Payments come from Open Payments, published under the Physician Payments Sunshine Act. Billing and prescribing figures come from the Medicare Physician & Other Practitioners and Part D Prescriber public use files for 2024.

Wendy Tzou, MD

Clinical Cardiac Electrophysiology · Aurora, CONPI 1952493843

Payments from drug & device makers

What this record shows

The money is spread across several categories — speaking fees (41.9%), consulting fees and travel and lodging — rather than concentrated in one kind of arrangement. 12 manufacturers reported payments, led by Abbott at 35.3% of the total. Among clinical cardiac electrophysiology clinicians in CO with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.

$349,696in general payments, 2019–2025

Across 660 payments — averaging $529.84 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

Abbott$123K
Boston Scientific$58K
Biosense Webster, Inc.$50K
Medical Device Business Services, Inc.$49K
Medtronic$48K
Biotronik Inc.$7K
plus $14K from 6 others

$188,038in research payments, 2019–2025

Across 61 payments — averaging $3082.59 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.

Abbott$99K
Biosense Webster, Inc.$26K
Medical Device Business Services, Inc.$24K
Boston Scientific$21K
Haemonetics Corporation$14K
Medtronic$3K

What the payments were for

Consulting fees$141,04340%
Speaking & faculty fees$146,67242%
Travel & lodging$35,29910%
Food & beverage$26,6828%

General payments by program year

Who reported the general payments

Companies are grouped under their corporate parent — a single manufacturer often files under several CMS reporting entities. Research and ownership payments are counted separately and are not in this table.

Company	Payments	Total
Abbott	326	$123,412
Boston Scientific	85	$58,247
Biosense Webster, Inc.	90	$49,979
Medical Device Business Services, Inc.	42	$49,293
Medtronic(2 entities)	89	$48,087
Biotronik Inc.	16	$6,672
Biosig Technologies, Inc.	5	$6,029
ZOLL Services LLC (a/k/a ZOLL Lifecor Corp)	2	$4,000
Baylis Medical Company Inc	1	$2,025
Abiomed	1	$1,750
Philips North America LLC	2	$133
Cardiofocus, Inc.	1	$69

What the payments were tied to

Products named in the reported payments. Only payments of $100 or more are attributed here — the typical reported payment nationally is a meal worth about $16, and listing those product-by-product would be noise.

Carto 3$79,660
ENSITE$44,678
GENERAL - THERAPIES$24,564
Ensite Cardiac Mapping System$21,611
EnSite Precision Cardiac Mapping System$20,488
ENSITE PRECISION$18,921
Carto 3 System$13,650
VersaCross Access Solution$10,503
Farapulse$9,659
TACTICATH ABLATION CATHETER, SENSOR ENABLED$6,274
PURE EP SYSTEM$5,000
Carto Smarttouch$4,200
LifeVest$4,000
EP-WorkMate Recording System$3,090
Impella$1,750
Sentus$1,500
Edora$1,500
Acticor$1,500
Rivacor$1,500
Plexa$1,500

How this compares

$349,696 in reported general payments places this provider in the 95th percentile of 66 clinical cardiac electrophysiology providers in Colorado.

See all clinical cardiac electrophysiology providers in Colorado →

Medicare billing

Part B allowed, 2024

$140,670

Medicare patients

798

Services billed

1,930

What this is not: this is the amount Original Medicare Part B allowed for services this provider billed in 2024. It is not their income. It excludes Medicare Advantage — now more than half of all Medicare enrollment — along with Medicaid and all commercial insurance, and it is gross practice revenue before staff, rent, supplies and malpractice premiums. CMS also suppresses any figure covering ten or fewer patients, so low-volume providers appear smaller than they are.

Most prescribed under Part D

Drug	Claims	Cost to plans & patients
EliquisApixaban	86	$124,785
XareltoRivaroxaban	26	$43,045
MultaqDronedarone Hcl	11	$14,042
Dofetilide	39	$9,950
Flecainide Acetate	33	$1,642
Metoprolol Succinate	55	$649
Amiodarone Hcl	34	$611
SotalolSotalol Hcl	19	$329
Metoprolol Tartrate	38	$205
Losartan Potassium	18	$158
Atorvastatin Calcium	21	$128
Carvedilol	29	$73
Furosemide	14	$66
Lisinopril	14	$56

Paid to pharmacies, not to this prescriber.

Other clinical cardiac electrophysiology in Aurora

Christopher PorterfieldAurora$340K
Lohit GargAurora$147K
Margot VlokaAurora$104K
Syed Rafay Ali SabzwariAurora$80K
Amneet SandhuAurora$53K
Ryan AleongAurora$33K
Dustin NashAurora$30K
Ryan BorneAurora$30K
Lukasz CerbinAurora$18K
Dominik WiktorAurora$9K

See the full list for Colorado →

Where these figures come from

Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
Billing: Medicare Physician & Other Practitioners, data year 2024. Original Medicare Part B only.
Identity: NPPES NPI Registry, July 2026.

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