Has Huan Giap, MD received payments from drug or device companies?

Yes. Drug and device makers reported $2,496 in general payments to Huan Giap, MD across 8 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 Huan Giap, 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 Huan Giap, 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.

Huan Giap, MD

Radiation Oncology · Murrells Inlet, SCNPI 1033185442

Payments from drug & device makers

What this record shows

This record is dominated by speaking fees: $1,500 of the $2,496 with a category attached, or 60.1%. Reflexion Medical, Inc. accounts for 66.8% of it on its own, with 4 other manufacturers making up the rest. Reporting peaked in 2021 at $1,500 and has fallen 98.3% since, to $25 in 2024.

$2,496in general payments, 2019–2025

Across 8 payments — averaging $311.94 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

Reflexion Medical, Inc.$2K
Varian Medical Systems, Inc.$525
IBA Proton Therapy, Inc.$152
Novocure Inc.$128
Teleflex LLC$25

What the payments were for

Speaking & faculty fees$1,50060%
Travel & lodging$52521%
Food & beverage$47119%

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
Reflexion Medical, Inc.	2	$1,666
Varian Medical Systems, Inc.	2	$525
IBA Proton Therapy, Inc.	2	$152
Novocure Inc.	1	$128
Teleflex LLC	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.

REFLEXION MEDICAL RADIOTHERAPY SYSTEM$1,666
ProBeam$525
Optune$128

How this compares

$2,496 in reported general payments places this provider in the 80th percentile of 72 radiation oncology providers in South Carolina.

See all radiation oncology providers in South Carolina →

Medicare billing

Part B allowed, 2024

$385,387

Medicare patients

183

Services billed

2,226

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
Lidocaine Hcl ViscousLidocaine Hcl	18	$251
Tamsulosin Hcl	25	$161

Paid to pharmacies, not to this prescriber.

Other radiation oncology in Murrells Inlet

Daniel FriedSpartanburg$57K
Clinton MedberyCharleston$37K
Brian LallyCharleston$29K
Kurt MeyerColumbia$12K
Kevin BlasColumbia$11K
David MarshallCharleston$8K
Leonid ZamdborgColumbia$7K
Virginia Clyburn-IpockFlorence$6K
John OconnellGreenville$6K
William TomlinsonAnderson$4K

See the full list for South Carolina →

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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