Michael Chen, MD
Interventional Cardiology · Rockville, MDNPI 1184650954
Payments from drug & device makers
Across 924 payments — averaging $734.49 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Novartis$438K
- Merck$75K
- Lilly USA, LLC$52K
- Boehringer Ingelheim$49K
- AstraZeneca$33K
- Lexicon Pharmaceuticals, Inc.$24K
- plus $10K from 34 others
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 |
|---|---|---|
| Novartis | 65 | $437,899 |
| Merck | 120 | $74,598 |
| Lilly USA, LLC | 72 | $51,571 |
| Boehringer Ingelheim | 88 | $48,618 |
| AstraZeneca | 124 | $32,506 |
| Lexicon Pharmaceuticals, Inc. | 46 | $23,771 |
| Novo Nordisk | 59 | $1,472 |
| Abbott | 13 | $1,280 |
| Johnson & Johnson | 62 | $1,203 |
| Amgen | 52 | $1,109 |
| E.r. Squibb & Sons, L.L.C. | 54 | $912 |
| Amarin Pharma, Inc. | 30 | $521 |
| Esperion Therapeutics, Inc. | 12 | $497 |
| Bayer | 19 | $373 |
| ZOLL Services LLC (a/k/a ZOLL Lifecor Corp) | 21 | $371 |
| Pfizer | 18 | $341 |
| Boston Scientific | 3 | $174 |
| Medtronic(2 entities) | 2 | $161 |
| Kiniksa Pharmaceuticals, Ltd. | 7 | $136 |
| Scpharmaceuticals Inc. | 6 | $136 |
| Irhythm Technologies, Inc. | 1 | $103 |
| Kowa Pharmaceuticals America, Inc. | 8 | $102 |
| Philips North America LLC | 5 | $95 |
| Aerin Medical Inc. | 1 | $91 |
| Sanofi-aventis U.S. LLC | 6 | $86 |
| Atricure, Inc. | 3 | $67 |
| Edwards Lifesciences | 4 | $66 |
| Daiichi Sankyo Inc. | 3 | $65 |
| Regeneron Healthcare Solutions, Inc. | 5 | $65 |
| Baxter Healthcare | 2 | $58 |
| Cook Medical LLC | 2 | $46 |
| Gilead | 3 | $36 |
| GSK | 1 | $26 |
| Bridgebio Pharma, Inc. | 1 | $22 |
| Kiniksa Pharmaceuticals International, PLC | 1 | $19 |
| Abiomed | 1 | $19 |
| Inari Medical, Inc. | 1 | $17 |
| Lundbeck LLC | 1 | $14 |
| AbbVie | 1 | $11 |
| Bardy Diagnostics, Inc. | 1 | $10 |
How this compares
$678,667 in reported general payments places this provider in the 90th percentile of 71 interventional cardiology providers in Maryland.
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 interventional cardiology in Rockville
- John WangBaltimore$6.4M
- Steven HearneSalisbury$2.6M
- Matthew VossBaltimore$2.6M
- Aloke FinnBaltimore$1.8M
- William HerzogColumbia$954K
- Vinay SatwahGreenbelt$679K
- Jon ResarBaltimore$592K
- Martin AlbornozBaltimore$403K
- Rani HasanBaltimore$374K
- Anuj GuptaBaltimore$285K
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.