Adrian Chen, MD
Internal Medicine · Richmond, MONPI 1790952869
Payments from drug & device makers
Across 198 payments — averaging $17.10 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AstraZeneca$402
- AbbVie$364
- Lilly USA, LLC$352
- Teva Pharmaceuticals USA, Inc.$347
- Abbott$319
- Dexcom, Inc.$187
- plus $1K from 27 others
What the payments were for
- Food & beverage$3,386100%
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 |
|---|---|---|
| AstraZeneca | 20 | $402 |
| AbbVie | 32 | $364 |
| Lilly USA, LLC | 20 | $352 |
| Teva Pharmaceuticals USA, Inc. | 20 | $347 |
| Abbott | 17 | $319 |
| Dexcom, Inc. | 8 | $187 |
| ITI, Inc. (d/b/a Intra-cellular Therapies, Inc.) | 13 | $183 |
| Vanda Pharmaceuticals Inc. | 7 | $180 |
| Otsuka America Pharmaceutical, Inc. | 8 | $148 |
| Pfizer | 8 | $135 |
| Merck | 4 | $77 |
| Novo Nordisk | 5 | $76 |
| Exact Sciences | 4 | $67 |
| Sumitomo Pharma America, Inc. | 5 | $54 |
| Boehringer Ingelheim | 3 | $47 |
| Lundbeck LLC | 2 | $44 |
| Baxter Healthcare | 2 | $42 |
| Vertex | 2 | $38 |
| Novartis | 2 | $38 |
| Antares Pharma, Inc. | 2 | $36 |
| Phathom Pharmaceuticals, Inc. | 2 | $34 |
| Tactile Systems Technology Inc | 1 | $24 |
| GSK | 1 | $24 |
| Hologic Sales And Service, LLC | 1 | $23 |
| Neurocrine Biosciences, Inc. | 1 | $22 |
| Amgen | 1 | $20 |
| Astellas Pharma US Inc | 1 | $16 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 1 | $16 |
| Mylan Specialty L.p. | 1 | $15 |
| Axsome Therapeutics, Inc. | 1 | $15 |
| Optinose US, Inc. | 1 | $14 |
| Halozyme Inc | 1 | $14 |
| Grifols USA, LLC | 1 | $14 |
How this compares
$3,386 in reported general payments places this provider in the 85th percentile of 2,097 internal medicine providers in Missouri.
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 |
|---|---|---|
| EliquisApixaban | 94 | $58,769 |
| OzempicSemaglutide | 44 | $45,916 |
| FarxigaDapagliflozin Propanediol | 36 | $23,206 |
| TrulicityDulaglutide | 17 | $16,904 |
| Nurtec OdtRimegepant Sulfate | 14 | $14,119 |
| JanuviaSitagliptin Phosphate | 16 | $13,302 |
| XareltoRivaroxaban | 15 | $13,198 |
| Combivent RespimatIpratropium/Albuterol Sulfate | 16 | $8,269 |
| Stiolto RespimatTiotropium Br/Olodaterol Hcl | 13 | $6,382 |
| SymbicortBudesonide/Formoterol Fumarate | 20 | $4,914 |
| Lantus SolostarInsulin Glargine,hum.Rec.Anlog | 39 | $4,125 |
| Albuterol Sulfate HfaAlbuterol Sulfate | 103 | $3,292 |
| Novolog FlexpenInsulin Aspart | 20 | $2,746 |
| Humalog Kwikpen U-100Insulin Lispro | 16 | $2,535 |
| Fluticasone Propionate | 54 | $2,480 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| PfizerEliquis, Nurtec Odt | $135 | $72,887108 claims |
| Novo NordiskOzempic | $76 | $45,91644 claims |
| AstraZenecaFarxiga, Symbicort | $402 | $28,12156 claims |
| Lilly USA, LLCTrulicity | $352 | $16,90417 claims |
| Boehringer IngelheimCombivent Respimat, Stiolto Respimat | $47 | $14,65029 claims |
| MerckJanuvia | $77 | $13,30216 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 85th percentile of 2,097 internal medicine providers in Missouri.
Other internal medicine in Richmond
- Timothy SmithSaint Peters$21.4M
- Craig DietzKansas City$4M
- Michael ReschakSaint Louis$3.1M
- Dima DandachiColumbia$1.2M
- Santosh SharmaKansas City$782K
- Jianbo WangChesterfield$643K
- David PrelutskySaint Louis$575K
- Danish JabbarSaint Louis$510K
- Dubert GuerreroIndependence$369K
- Hany SalamaSaint Louis$279K
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.