Yuan Chen, MD
Nephrology · Carbondale, ILNPI 1447288501
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 7 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. Boston Scientific accounts for 88.3% of it on its own, with 1 other manufacturer making up the rest. 2025 is the largest year on record at $97, 3.0 times the $32 reported in 2019. That places this record below the midpoint for nephrology clinicians in IL, where the typical reported total is $635.
Across 7 payments — averaging $25.51 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Boston Scientific$158
- Axsome Therapeutics, Inc.$21
Across 1 payment — averaging $272,395 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Takeda Pharmaceuticals U.S.A., Inc.$272K
What the payments were for
- Food & beverage$179100%
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 |
|---|---|---|
| Boston Scientific | 6 | $158 |
| Axsome Therapeutics, Inc. | 1 | $21 |
How this compares
$179 in reported general payments places this provider in the 20th percentile of 524 nephrology providers in Illinois.
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.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Sevelamer Carbonate | 75 | $35,182 |
| VelphoroSucroferric Oxyhydroxide | 12 | $33,147 |
| VeltassaPatiromer Calcium Sorbitex | 19 | $20,854 |
| JardianceEmpagliflozin | 34 | $17,259 |
| Calcium Acetate | 33 | $4,187 |
| Furosemide | 146 | $2,538 |
| Hydralazine Hcl | 88 | $2,359 |
| Isosorbide Mononitrate ErIsosorbide Mononitrate | 53 | $2,202 |
| Losartan Potassium | 175 | $2,141 |
| Bumetanide | 28 | $1,762 |
| Midodrine Hcl | 33 | $1,617 |
| Metolazone | 12 | $1,270 |
| Torsemide | 39 | $1,253 |
| Lidocaine-PrilocaineLidocaine/Prilocaine | 46 | $1,124 |
| Potassium Chloride | 28 | $1,013 |
Paid to pharmacies, not to this prescriber.
Other nephrology in Carbondale
- Myles WolfChicago$2.1M
- Mohammed AhmedBolingbrook$1.1M
- Anis RaufHinsdale$453K
- Juan LermaEvergreen Park$351K
- Stuart SpragueEvanston$337K
- Suneel UdaniHinsdale$336K
- Susan QuagginChicago$262K
- Nicole StankusChicago$235K
- Omaima DeganiGurnee$184K
- Merry DownerSpringfield$156K
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.