Christopher Ahn, MD
Anesthesiology · Las Vegas, NVNPI 1316138126
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 99.8% of the total across 71 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. AbbVie accounts for 76.1% of it on its own, with 9 other manufacturers making up the rest. Reporting peaked in 2024 at $1,498 and has fallen 98.6% since, to $21 in 2025. Among anesthesiology clinicians in NV 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.
Across 71 payments — averaging $84.08 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$5K
- Janssen Scientific Affairs, LLC$488
- Pfizer$226
- Johnson & Johnson$150
- Takeda Pharmaceuticals U.S.A., Inc.$135
- E.r. Squibb & Sons, L.L.C.$124
- plus $306 from 4 others
What the payments were for
- Food & beverage$5,955100%
- Education$150%
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 |
|---|---|---|
| AbbVie | 54 | $4,540 |
| Janssen Scientific Affairs, LLC | 4 | $488 |
| Pfizer | 2 | $226 |
| Johnson & Johnson | 1 | $150 |
| Takeda Pharmaceuticals U.S.A., Inc. | 2 | $135 |
| E.r. Squibb & Sons, L.L.C. | 1 | $124 |
| Lilly USA, LLC | 1 | $121 |
| Merck | 1 | $103 |
| Boston Scientific | 4 | $70 |
| Axonics, Inc. | 1 | $13 |
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
$5,969 in reported general payments places this provider in the 95th percentile of 457 anesthesiology providers in Nevada.
Medicare billing
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 anesthesiology in Las Vegas
- Edward LizanoLas Vegas$1.2M
- Steven EvansLas Vegas$52K
- Yi McWhorterLas Vegas$23K
- Khuram KhanLas Vegas$23K
- Stephanie DavidsonLas Vegas$13K
- Mauricio NinoLas Vegas$12K
- Balazs MakaiLas Vegas$6K
- Ziad SawiLas Vegas$5K
- Cherie ManyLas Vegas$4K
- Anderson HuLas Vegas$4K
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.