Has Zao Zhang, MD received payments from drug or device companies?

Yes. Drug and device makers reported $4,114 in general payments to Zao Zhang, MD across 42 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 Zao Zhang, 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 Zao Zhang, 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.

Zao Zhang, MD

Internal Medicine · Honolulu, HINPI 1801278288

Payments from drug & device makers

$4,114in general payments, 2019–2025

Across 42 payments — averaging $97.95 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

Stryker$1K
Microvention, Inc.$1K
Johnson & Johnson$639
AstraZeneca$245
Amarin Pharma, Inc.$193
AbbVie$138
plus $274 from 4 others

What the payments were for

Travel & lodging$1,16628%
Food & beverage$2,94872%

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
Stryker	25	$1,458
Microvention, Inc.	1	$1,166
Johnson & Johnson	6	$639
AstraZeneca(2 entities)	2	$245
Amarin Pharma, Inc.	2	$193
AbbVie	2	$138
Pfizer	1	$125
E.r. Squibb & Sons, L.L.C.	1	$96
Chiesi USA, Inc.	1	$29
Genentech USA, Inc.	1	$25

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

$4,114 in reported general payments places this provider in the 85th percentile of 655 internal medicine providers in Hawaii.

See all internal medicine providers in Hawaii →

Medicare billing

Part B allowed, 2024

$48,532

Medicare patients

120

Services billed

449

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
Pantoprazole Sodium	13	$109
Oxycodone Hcl	20	$81

Paid to pharmacies, not to this prescriber.

Other internal medicine in Honolulu

Keith WooHonolulu$106K
Ronald PerryHonolulu$102K
Laurie TomHonolulu$95K
Yusuke MiyataniHonolulu$80K
Joshua TanHonolulu$76K
Jose de LeonHonolulu$52K
Peter DeeHonolulu$49K
James LumengHonolulu$45K
Charles ZerezHonolulu$44K
Anthony HernandezHonolulu$41K

See the full list for Hawaii →

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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