Alexander Chen, MD
Pulmonary Disease · Saint Louis, MONPI 1881802783
Payments from drug & device makers
What this record shows
The money is spread across several categories — education (55.0%), consulting fees and travel and lodging — rather than concentrated in one kind of arrangement. Olympus Corporation Of The Americas accounts for 62.1% of it on its own, with 25 other manufacturers making up the rest. Among pulmonary disease clinicians in MO 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 920 payments — averaging $737.82 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Olympus Corporation Of The Americas$422K
- Olympus America Inc.$70K
- Boston Scientific$49K
- Johnson & Johnson$23K
- Olympus Corporation$17K
- Spiration, Inc.$16K
- plus $82K from 20 others
Across 24 payments — averaging $11,330 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.
- Olympus Corporation Of The Americas$111K
- Boston Scientific$73K
- Auris Health, Inc.$37K
- Veran Medical Technologies, Inc.$32K
- BD$10K
- Merit Medical Systems Inc$7K
- plus $2K from 1 others
What the payments were for
- Consulting fees$200,37130%
- Speaking & faculty fees$31,6705%
- Travel & lodging$58,5879%
- Food & beverage$14,5542%
- Education$373,61455%
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 |
|---|---|---|
| Olympus Corporation Of The Americas | 582 | $421,627 |
| Olympus America Inc. | 102 | $69,777 |
| Boston Scientific | 54 | $48,542 |
| Johnson & Johnson | 26 | $22,873 |
| Olympus Corporation | 28 | $17,273 |
| Spiration, Inc. | 18 | $16,216 |
| Gyrus ACMI, Inc. | 17 | $15,633 |
| Erbe Elektromedizin GmbH | 4 | $14,525 |
| Auris Health, Inc. | 2 | $13,144 |
| Intuitive Surgical | 29 | $9,054 |
| AstraZeneca | 13 | $6,185 |
| Serpex Medical Inc | 5 | $5,685 |
| Olympus Medical Systems Corporation | 7 | $5,486 |
| Bard Peripheral Vascular, Inc. | 7 | $4,886 |
| Cook Incorporated | 5 | $4,675 |
| Veran Medical Technologies, Inc. | 3 | $1,898 |
| Pulmonx Corporation | 3 | $274 |
| Elucent Medical | 1 | $250 |
| Cook Medical LLC | 2 | $212 |
| ERBE USA Inc | 1 | $198 |
| GE HealthCare | 1 | $133 |
| Rocket Medical LLC | 4 | $74 |
| Ambu Inc. | 3 | $64 |
| BD | 1 | $64 |
| Melinta Therapeutics, LLC | 1 | $35 |
| Merck | 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.
- SINGLE USE SUCTION VALVE (Sterile)$270,009
- EVES EUS ULTRASOUND BRONCHOFIBERVIDEOSCOPE$86,171
- Olympus$81,546
- Olympus Respiratory Accessories$79,188
- Single Use Aspiration Needle$71,041
- Olympus EBUS Bronchoscopes$69,719
- Olympus Bronchoscopes$62,812
- Single Use Aspiration Needle NA-U401SX$58,295
- Olympus Capital Accessories$57,654
- ViziShot 2 FLEX$55,781
- Single Use Guide Sheath Kit$55,659
- MONARCH$21,836
- GENERAL - THERAPIES$21,539
- EVIS EXERA II ULTRASONIC BRONCHOFIBERVIDEOSCOPE$18,760
- GENERAL PULMONARY$18,286
- EVIS EXERA$17,460
- Monarch Platform$16,732
- Spiration Valve System$14,715
- Olympus Respiratory Devices$12,320
- Respiratory Accessories$9,680
How this compares
$678,796 in reported general payments places this provider in the 95th percentile of 295 pulmonary disease 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.
Other pulmonary disease in Saint Louis
- Derek ByersSaint Louis$835K
- Joseph OjileSaint Louis$538K
- Edward CharbekSaint Louis$372K
- Marin KollefSaint Louis$264K
- Praveen ChennaSaint Louis$255K
- Murali ChakinalaSaint Louis$172K
- Janet LeeSaint Louis$143K
- Ali SadoughiSaint Louis$87K
- Ramsey HachemSaint Louis$79K
- Shiraz DaudSaint Louis$67K
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.