Chien-Yeu Chun
Obstetrics · Las Vegas, NVNPI 1922504042
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 18 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. 10 manufacturers reported payments, led by Astellas Pharma US Inc at 26.2% of the total.
Across 18 payments — averaging $27.90 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Astellas Pharma US Inc$131
- Chiesi USA, Inc.$125
- Pharmacosmos Therapeutics Inc.$62
- Daiichi Sankyo Inc.$55
- Organon$28
- Hologic Sales And Service, LLC$28
- plus $73 from 4 others
What the payments were for
- Food & beverage$502100%
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 |
|---|---|---|
| Astellas Pharma US Inc | 5 | $131 |
| Chiesi USA, Inc. | 1 | $125 |
| Pharmacosmos Therapeutics Inc. | 2 | $62 |
| Daiichi Sankyo Inc. | 3 | $55 |
| Organon | 2 | $28 |
| Hologic Sales And Service, LLC | 1 | $28 |
| Bayer | 1 | $20 |
| Mycovia Pharmaceuticals, Inc. | 1 | $20 |
| Coloplast | 1 | $20 |
| Pfizer | 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.
- MYCAPSSA$125
How this compares
Too few obstetrics providers in Nevadato place this figure against a meaningful peer group, so we don't.
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 obstetrics in Las Vegas
- Sonia CeballosLas Vegas$16K
- Jeffrey WrightsonLas Vegas$12K
- Elizabeth EhamaLas Vegas$4K
- Emily CulbertLas Vegas$850
- Timothy SauterHenderson$17K
- Jacob EisertHenderson$5K
- Jasmine PedrosoHenderson$3K
- Deepali KashyapHenderson$2K
- Elena LangdonHenderson$633
- Noel HarrisonNorth Las Vegas$32
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.