Has Rex Chung, MD received payments from drug or device companies?

Yes. Drug and device makers reported $12,222 in general payments to Rex Chung, MD across 67 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 Rex Chung, 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 Rex Chung, 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.

Rex Chung, MD

Surgical Critical Care · Loma Linda, CANPI 1003021882

Payments from drug & device makers

What this record shows

The money is spread across several categories — travel and lodging (46.6%), education and food and beverage — rather than concentrated in one kind of arrangement. Intuitive Surgical accounts for 96.0% of it on its own, with 5 other manufacturers making up the rest. Reporting peaked in 2022 at $6,716 and has fallen 94.3% since, to $384 in 2025.

$12,222in general payments, 2019–2025

Across 67 payments — averaging $182.42 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

Intuitive Surgical$12K
Aroa Biosurgery Incorporated$224
Medtronic$175
Zimmer Biomet$49
Kls-martin L.p.$27
Johnson & Johnson$17

What the payments were for

Travel & lodging$5,70147%
Food & beverage$1,43412%
Education$5,08742%

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
Intuitive Surgical	61	$11,731
Aroa Biosurgery Incorporated	2	$224
Medtronic	1	$175
Zimmer Biomet	1	$49
Kls-martin L.p.	1	$27
Johnson & Johnson	1	$17

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.

How this compares

$12,222 in reported general payments places this provider in the 85th percentile of 141 surgical critical care providers in California.

See all surgical critical care providers in California →

Medicare billing

Part B allowed, 2024

$137,751

Medicare patients

309

Services billed

714

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.

Other surgical critical care in Loma Linda

Kristine BonnickLoma Linda$3K
Aaron StrumwasserLynwood$200K
Demetrios DemetriadesLos Angeles$192K
David SpainPalo Alto$117K
Brian LugoPasadena$61K
Matthew BloomSan Jose$42K
Scott CunneenLos Angeles$35K
Nicholas NissenLos Angeles$26K
Alan PangFresno$22K
Amy LiepertSan Diego$22K

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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