Has Sung Chun, MD received payments from drug or device companies?

Yes. Drug and device makers reported $506 in general payments to Sung Chun, MD across 18 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 Sung Chun, 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 Sung Chun, 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.

Sung Chun, MD

Clinical Cardiac Electrophysiology · Stanford, CANPI 1477640381

Payments from drug & device makers

$506in general payments, 2019–2025

Across 18 payments — averaging $28.12 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

Biosense Webster, Inc.$241
Medtronic$128
Abbott$91
Cardiva Medical, Inc.$27
Endologix LLC$19

What the payments were for

Food & beverage$506100%

Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.

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
Biosense Webster, Inc.	10	$241
Medtronic	2	$128
Abbott	4	$91
Cardiva Medical, Inc.	1	$27
Endologix LLC	1	$19

How this compares

$506 in reported general payments places this provider in the 5th percentile of 290 clinical cardiac electrophysiology providers in California.

See all clinical cardiac electrophysiology providers in California →

Medicare billing

Part B allowed, 2024

$412,506

Medicare patients

1,600

Services billed

4,504

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	628	$798,850
XareltoRivaroxaban	186	$248,834
MultaqDronedarone Hcl	43	$74,340
Metoprolol Succinate	492	$6,444
Flecainide Acetate	128	$6,236
Diltiazem 24hr Er (Cd)Diltiazem Hcl	110	$3,523
Amiodarone Hcl	138	$3,327
Mexiletine Hcl	13	$1,521
SotalolSotalol Hcl	45	$741
Atorvastatin Calcium	55	$677
Sotalol AfSotalol Hcl	12	$647
Lisinopril	48	$568
Verapamil ErVerapamil Hcl	14	$556
Digoxin	27	$536
Carvedilol	28	$515

Paid to pharmacies, not to this prescriber.

Other clinical cardiac electrophysiology in Stanford

Marco PerezStanford$2.1M
Tina BaykanerStanford$473K
Nitish BadhwarStanford$395K
Alexander PerinoStanford$367K
Sanjiv NarayanStanford$357K
Mohan ViswanathanStanford$297K
Minang TurakhiaStanford$186K
David KrummenSan Diego$7.3M
Jonathan DukesVentura$2.9M
Shephal DoshiSanta Monica$2.9M

See the full list for California →

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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