Covered recipient · General Payments record

ALEXANDER C CHEN

Allopathic & Osteopathic Physicians Internal Medicine Pulmonary Disease

NPI: 1881802783
CMS profile: 39627
Location: SAINT LOUIS, MO

General Payments · PY2018–2024

$720,233.94

Reported across 1,031 records
CMS publication 2026-01-23

Latest program year · PY2024

$112,880.43

141 records · 0 disputed

Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.

How these totals are calculated

The total is the sum of the General Payments records CMS published for the labeled program year(s), exactly as published. Nothing is estimated, weighted, or combined across categories.
General Payments only. Research and Ownership/Investment are separate datasets and are never summed with these figures; amounts are kept separate per program year.
Featured-page threshold (a presentation gate, not a judgment): records>=3 OR total>=100 (all years).
Methodology & Data — sourcing, labeling, and limitations.

By nature of payment

PY2024 · sorted by reported total

Nature of payment	Amount	Records
Education	$58,585.00	30
Consulting Fee	$38,267.50	28
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$7,870.00	3
Travel and Lodging	$6,372.35	44
Food and Beverage	$1,785.58	36

By paying entity

PY2024 · sorted by reported total

Paying entity	Amount	Records
Olympus Corporation of the Americas	$68,671.15	92
Olympus America Inc.	$20,258.01	25
Gyrus ACMI, Inc.	$13,872.65	14
Olympus Medical Systems Corporation	$5,485.59	7
Acerta Pharma LLC	$4,027.50	1
Veran Medical Technologies, Inc.	$440.00	1
INTUITIVE SURGICAL, INC.	$125.53	1

By program year

All program years on this page · sorted by year

Program year	Amount	Records
PY2018	$135,260.30	216
PY2019	$166,932.20	204
PY2020	$58,808.11	79
PY2021	$37,894.23	53
PY2022	$103,541.23	168
PY2023	$104,917.44	170
PY2024	$112,880.43	141

Payment records · PY2024 (141)

Sorted by paying entity, then date · as published by CMS

Program year 2024 2018 2019 2020 2021 2022 2023 Record-level detail is published for PY2024; earlier years are summarised in “By program year”.

Paying entity	Amount	Date	Nature of payment	Dispute status	Published	Record ID	Source
AstraZeneca Pharmaceuticals LP	$4,027.50	12/20/2024	Consulting Fee	Undisputed	01/23/2026	1104742857	CMS
Gyrus ACMI, Inc.	$880.00	01/09/2024	Consulting Fee	Undisputed	01/23/2026	1099612715	CMS
Gyrus ACMI, Inc.	$35.00	05/22/2024	Travel and Lodging	Undisputed	01/23/2026	1099612719	CMS
Gyrus ACMI, Inc.	$507.52	05/22/2024	Travel and Lodging	Undisputed	01/23/2026	1099612721	CMS
Gyrus ACMI, Inc.	$35.89	05/28/2024	Food and Beverage	Undisputed	01/23/2026	1099612717	CMS
Gyrus ACMI, Inc.	$31.75	05/30/2024	Food and Beverage	Undisputed	01/23/2026	1099612741	CMS
Gyrus ACMI, Inc.	$440.00	07/09/2024	Consulting Fee	Undisputed	01/23/2026	1099612735	CMS
Gyrus ACMI, Inc.	$1,320.00	07/09/2024	Consulting Fee	Undisputed	01/23/2026	1099612737	CMS
Gyrus ACMI, Inc.	$440.00	07/09/2024	Consulting Fee	Undisputed	01/23/2026	1099612739	CMS
Gyrus ACMI, Inc.	$90.92	07/23/2024	Travel and Lodging	Undisputed	01/23/2026	1099612723	CMS
Gyrus ACMI, Inc.	$266.57	07/23/2024	Travel and Lodging	Undisputed	01/23/2026	1099612725	CMS
Gyrus ACMI, Inc.	$1,965.00	07/23/2024	Consulting Fee	Undisputed	01/23/2026	1099612727	CMS
Gyrus ACMI, Inc.	$5,240.00	07/23/2024	Consulting Fee	Undisputed	01/23/2026	1099612729	CMS
Gyrus ACMI, Inc.	$655.00	07/23/2024	Consulting Fee	Undisputed	01/23/2026	1099612731	CMS
Gyrus ACMI, Inc.	$1,965.00	07/23/2024	Consulting Fee	Undisputed	01/23/2026	1099612733	CMS
INTUITIVE SURGICAL, INC.	$125.53	02/13/2024	Food and Beverage	Undisputed	01/23/2026	1137095642	CMS
Olympus America Inc.	$1,320.00	01/17/2024	Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	Undisputed	01/23/2026	1108475424	CMS
Olympus America Inc.	$159.98	04/11/2024	Travel and Lodging	Undisputed	01/23/2026	1108475449	CMS
Olympus America Inc.	$247.24	04/11/2024	Travel and Lodging	Undisputed	01/23/2026	1108475453	CMS
Olympus America Inc.	$35.00	04/11/2024	Travel and Lodging	Undisputed	01/23/2026	1108475457	CMS
Olympus America Inc.	$35.00	04/11/2024	Travel and Lodging	Undisputed	01/23/2026	1108475460	CMS
Olympus America Inc.	$46.14	04/15/2024	Food and Beverage	Undisputed	01/23/2026	1108475468	CMS
Olympus America Inc.	$106.73	04/30/2024	Food and Beverage	Undisputed	01/23/2026	1108475474	CMS
Olympus America Inc.	$155.98	05/06/2024	Travel and Lodging	Undisputed	01/23/2026	1108475464	CMS
Olympus America Inc.	$660.00	06/05/2024	Consulting Fee	Undisputed	01/23/2026	1108475427	CMS
Olympus America Inc.	$880.00	06/05/2024	Consulting Fee	Undisputed	01/23/2026	1108475430	CMS
Olympus America Inc.	$660.00	06/05/2024	Consulting Fee	Undisputed	01/23/2026	1108475434	CMS
Olympus America Inc.	$660.00	06/05/2024	Consulting Fee	Undisputed	01/23/2026	1108475437	CMS
Olympus America Inc.	$880.00	06/05/2024	Consulting Fee	Undisputed	01/23/2026	1108475441	CMS
Olympus America Inc.	$880.00	06/05/2024	Consulting Fee	Undisputed	01/23/2026	1108475445	CMS
Olympus America Inc.	$41.33	08/22/2024	Food and Beverage	Undisputed	01/23/2026	1108475382	CMS
Olympus America Inc.	$13.57	08/22/2024	Food and Beverage	Undisputed	01/23/2026	1108475386	CMS
Olympus America Inc.	$14.41	08/22/2024	Food and Beverage	Undisputed	01/23/2026	1108475391	CMS
Olympus America Inc.	$57.02	08/22/2024	Food and Beverage	Undisputed	01/23/2026	1108475395	CMS
Olympus America Inc.	$14.08	08/22/2024	Food and Beverage	Undisputed	01/23/2026	1108475399	CMS
Olympus America Inc.	$3,960.00	08/22/2024	Consulting Fee	Undisputed	01/23/2026	1108475402	CMS
Olympus America Inc.	$1,430.00	08/22/2024	Consulting Fee	Undisputed	01/23/2026	1108475407	CMS
Olympus America Inc.	$1,430.00	08/22/2024	Consulting Fee	Undisputed	01/23/2026	1108475412	CMS
Olympus America Inc.	$21.53	10/07/2024	Food and Beverage	Undisputed	01/23/2026	1108475378	CMS
Olympus America Inc.	$5,240.00	11/27/2024	Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	Undisputed	01/23/2026	1108475416	CMS
Olympus America Inc.	$1,310.00	11/27/2024	Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	Undisputed	01/23/2026	1108475421	CMS
Olympus Corporation of the Americas	$440.00	01/10/2024	Education	Undisputed	01/23/2026	1110437236	CMS
Olympus Corporation of the Americas	$75.00	01/10/2024	Travel and Lodging	Undisputed	01/23/2026	1110437238	CMS
Olympus Corporation of the Americas	$53.80	01/10/2024	Food and Beverage	Undisputed	01/23/2026	1110437240	CMS
Olympus Corporation of the Americas	$85.00	01/10/2024	Food and Beverage	Undisputed	01/23/2026	1110437242	CMS
Olympus Corporation of the Americas	$1,320.00	01/10/2024	Education	Undisputed	01/23/2026	1110437244	CMS
Olympus Corporation of the Americas	$1,320.00	01/10/2024	Education	Undisputed	01/23/2026	1110437246	CMS
Olympus Corporation of the Americas	$1,760.00	01/10/2024	Education	Undisputed	01/23/2026	1110437248	CMS
Olympus Corporation of the Americas	$3,740.00	01/10/2024	Education	Undisputed	01/23/2026	1110437250	CMS
Olympus Corporation of the Americas	$3,740.00	01/10/2024	Education	Undisputed	01/23/2026	1110437252	CMS
Olympus Corporation of the Americas	$19.95	01/10/2024	Food and Beverage	Undisputed	01/23/2026	1110437254	CMS
Olympus Corporation of the Americas	$135.02	01/17/2024	Food and Beverage	Undisputed	01/23/2026	1110438152	CMS
Olympus Corporation of the Americas	$11.84	01/17/2024	Food and Beverage	Undisputed	01/23/2026	1110438154	CMS
Olympus Corporation of the Americas	$525.21	02/15/2024	Travel and Lodging	Undisputed	01/23/2026	1110438158	CMS
Olympus Corporation of the Americas	$35.00	02/15/2024	Travel and Lodging	Undisputed	01/23/2026	1110438160	CMS
Olympus Corporation of the Americas	$35.78	02/15/2024	Food and Beverage	Undisputed	01/23/2026	1110438162	CMS
Olympus Corporation of the Americas	$35.78	02/15/2024	Food and Beverage	Undisputed	01/23/2026	1110438164	CMS
Olympus Corporation of the Americas	$35.11	02/15/2024	Travel and Lodging	Undisputed	01/23/2026	1110438166	CMS
Olympus Corporation of the Americas	$46.61	02/15/2024	Travel and Lodging	Undisputed	01/23/2026	1110438168	CMS
Olympus Corporation of the Americas	$440.00	02/20/2024	Education	Undisputed	01/23/2026	1110437226	CMS
Olympus Corporation of the Americas	$716.36	03/06/2024	Travel and Lodging	Undisputed	01/23/2026	1110438156	CMS
Olympus Corporation of the Americas	$1,100.00	03/18/2024	Education	Undisputed	01/23/2026	1110437232	CMS
Olympus Corporation of the Americas	$440.00	03/18/2024	Education	Undisputed	01/23/2026	1110437234	CMS
Olympus Corporation of the Americas	$27.21	03/19/2024	Food and Beverage	Undisputed	01/23/2026	1110437206	CMS
Olympus Corporation of the Americas	$28.25	03/19/2024	Food and Beverage	Undisputed	01/23/2026	1110437208	CMS
Olympus Corporation of the Americas	$660.00	03/27/2024	Consulting Fee	Undisputed	01/23/2026	1110437256	CMS
Olympus Corporation of the Americas	$1,320.00	04/01/2024	Consulting Fee	Undisputed	01/23/2026	1110437258	CMS
Olympus Corporation of the Americas	$1,100.00	04/24/2024	Consulting Fee	Undisputed	01/23/2026	1110437228	CMS
Olympus Corporation of the Americas	$440.00	04/24/2024	Consulting Fee	Undisputed	01/23/2026	1110437230	CMS
Olympus Corporation of the Americas	$9.98	05/02/2024	Travel and Lodging	Undisputed	01/23/2026	1110438224	CMS
Olympus Corporation of the Americas	$85.00	05/02/2024	Food and Beverage	Undisputed	01/23/2026	1110438226	CMS
Olympus Corporation of the Americas	$85.00	05/02/2024	Food and Beverage	Undisputed	01/23/2026	1110438228	CMS
Olympus Corporation of the Americas	$41.36	05/02/2024	Travel and Lodging	Undisputed	01/23/2026	1110438230	CMS
Olympus Corporation of the Americas	$42.55	05/02/2024	Travel and Lodging	Undisputed	01/23/2026	1110438232	CMS
Olympus Corporation of the Americas	$440.00	05/02/2024	Education	Undisputed	01/23/2026	1110438234	CMS
Olympus Corporation of the Americas	$1,540.00	05/02/2024	Education	Undisputed	01/23/2026	1110438236	CMS
Olympus Corporation of the Americas	$1,540.00	05/02/2024	Education	Undisputed	01/23/2026	1110438238	CMS
Olympus Corporation of the Americas	$1,760.00	05/02/2024	Education	Undisputed	01/23/2026	1110438240	CMS
Olympus Corporation of the Americas	$3,740.00	05/02/2024	Education	Undisputed	01/23/2026	1110438242	CMS
Olympus Corporation of the Americas	$3,740.00	05/02/2024	Education	Undisputed	01/23/2026	1110438244	CMS
Olympus Corporation of the Americas	$38.93	05/02/2024	Travel and Lodging	Undisputed	01/23/2026	1110438246	CMS
Olympus Corporation of the Americas	$39.19	05/02/2024	Food and Beverage	Undisputed	01/23/2026	1110438248	CMS
Olympus Corporation of the Americas	$14.97	05/02/2024	Travel and Lodging	Undisputed	01/23/2026	1110438250	CMS
Olympus Corporation of the Americas	$11.98	05/02/2024	Travel and Lodging	Undisputed	01/23/2026	1110438252	CMS
Olympus Corporation of the Americas	$12.96	05/02/2024	Travel and Lodging	Undisputed	01/23/2026	1110438254	CMS
Olympus Corporation of the Americas	$13.56	05/02/2024	Food and Beverage	Undisputed	01/23/2026	1110438256	CMS
Olympus Corporation of the Americas	$440.00	05/22/2024	Education	Undisputed	01/23/2026	1110438274	CMS
Olympus Corporation of the Americas	$13.96	06/12/2024	Travel and Lodging	Undisputed	01/23/2026	1110438212	CMS
Olympus Corporation of the Americas	$14.28	06/12/2024	Food and Beverage	Undisputed	01/23/2026	1110438214	CMS
Olympus Corporation of the Americas	$20.83	06/12/2024	Travel and Lodging	Undisputed	01/23/2026	1110438216	CMS
Olympus Corporation of the Americas	$18.92	06/12/2024	Travel and Lodging	Undisputed	01/23/2026	1110438218	CMS
Olympus Corporation of the Americas	$33.11	06/12/2024	Food and Beverage	Undisputed	01/23/2026	1110438220	CMS
Olympus Corporation of the Americas	$10.97	06/12/2024	Travel and Lodging	Undisputed	01/23/2026	1110438222	CMS
Olympus Corporation of the Americas	$1,540.00	06/12/2024	Education	Undisputed	01/23/2026	1110438258	CMS
Olympus Corporation of the Americas	$1,540.00	06/12/2024	Education	Undisputed	01/23/2026	1110438260	CMS
Olympus Corporation of the Americas	$2,640.00	06/12/2024	Education	Undisputed	01/23/2026	1110438262	CMS
Olympus Corporation of the Americas	$3,520.00	06/12/2024	Education	Undisputed	01/23/2026	1110438264	CMS
Olympus Corporation of the Americas	$85.00	06/12/2024	Food and Beverage	Undisputed	01/23/2026	1110438266	CMS
Olympus Corporation of the Americas	$55.00	06/12/2024	Travel and Lodging	Undisputed	01/23/2026	1110438268	CMS
Olympus Corporation of the Americas	$1,100.00	06/12/2024	Education	Undisputed	01/23/2026	1110438270	CMS
Olympus Corporation of the Americas	$440.00	06/12/2024	Education	Undisputed	01/23/2026	1110438272	CMS
Olympus Corporation of the Americas	$35.00	07/25/2024	Travel and Lodging	Undisputed	01/23/2026	1110437222	CMS
Olympus Corporation of the Americas	$402.46	07/25/2024	Travel and Lodging	Undisputed	01/23/2026	1110437224	CMS
Olympus Corporation of the Americas	$17.50	08/13/2024	Food and Beverage	Undisputed	01/23/2026	1110437210	CMS
Olympus Corporation of the Americas	$19.74	08/14/2024	Travel and Lodging	Undisputed	01/23/2026	1110437212	CMS
Olympus Corporation of the Americas	$289.75	08/14/2024	Travel and Lodging	Undisputed	01/23/2026	1110437216	CMS
Olympus Corporation of the Americas	$91.05	08/14/2024	Food and Beverage	Undisputed	01/23/2026	1110437220	CMS
Olympus Corporation of the Americas	$19.74	08/15/2024	Travel and Lodging	Undisputed	01/23/2026	1110437218	CMS
Olympus Corporation of the Americas	$415.80	08/16/2024	Travel and Lodging	Undisputed	01/23/2026	1110437214	CMS
Olympus Corporation of the Americas	$131.33	08/16/2024	Travel and Lodging	Undisputed	01/23/2026	1110438202	CMS
Olympus Corporation of the Americas	$60.00	09/05/2024	Food and Beverage	Undisputed	01/23/2026	1110438204	CMS
Olympus Corporation of the Americas	$53.80	09/05/2024	Food and Beverage	Undisputed	01/23/2026	1110438206	CMS
Olympus Corporation of the Americas	$385.97	10/15/2024	Travel and Lodging	Undisputed	01/23/2026	1110438208	CMS
Olympus Corporation of the Americas	$35.00	10/15/2024	Travel and Lodging	Undisputed	01/23/2026	1110438210	CMS
Olympus Corporation of the Americas	$415.80	11/11/2024	Travel and Lodging	Undisputed	01/23/2026	1110438276	CMS
Olympus Corporation of the Americas	$289.75	11/12/2024	Travel and Lodging	Undisputed	01/23/2026	1110438172	CMS
Olympus Corporation of the Americas	$58.51	11/12/2024	Food and Beverage	Undisputed	01/23/2026	1110438180	CMS
Olympus Corporation of the Americas	$16.58	11/12/2024	Food and Beverage	Undisputed	01/23/2026	1110438182	CMS
Olympus Corporation of the Americas	$75.00	11/12/2024	Travel and Lodging	Undisputed	01/23/2026	1110438184	CMS
Olympus Corporation of the Americas	$5,567.50	11/12/2024	Education	Undisputed	01/23/2026	1110438186	CMS
Olympus Corporation of the Americas	$2,292.50	11/12/2024	Education	Undisputed	01/23/2026	1110438188	CMS
Olympus Corporation of the Americas	$5,567.50	11/12/2024	Education	Undisputed	01/23/2026	1110438190	CMS
Olympus Corporation of the Americas	$655.00	11/12/2024	Education	Undisputed	01/23/2026	1110438192	CMS
Olympus Corporation of the Americas	$1,965.00	11/12/2024	Education	Undisputed	01/23/2026	1110438194	CMS
Olympus Corporation of the Americas	$1,965.00	11/12/2024	Education	Undisputed	01/23/2026	1110438196	CMS
Olympus Corporation of the Americas	$58.80	11/12/2024	Food and Beverage	Undisputed	01/23/2026	1110438198	CMS
Olympus Corporation of the Americas	$25.85	11/14/2024	Travel and Lodging	Undisputed	01/23/2026	1110438178	CMS
Olympus Corporation of the Americas	$87.30	11/15/2024	Travel and Lodging	Undisputed	01/23/2026	1110438170	CMS
Olympus Corporation of the Americas	$655.00	11/21/2024	Consulting Fee	Undisputed	01/23/2026	1110438174	CMS
Olympus Corporation of the Americas	$655.00	12/05/2024	Education	Undisputed	01/23/2026	1110438176	CMS
Olympus Corporation of the Americas	$1,637.50	12/05/2024	Education	Undisputed	01/23/2026	1110438200	CMS
Olympus Corporation of the Americas	$377.95	12/27/2024	Travel and Lodging	Undisputed	01/23/2026	1110438278	CMS
Olympus Corporation of the Americas	$35.00	12/27/2024	Travel and Lodging	Undisputed	01/23/2026	1110438280	CMS
Olympus Medical Systems Corporation	$48.59	01/09/2024	Food and Beverage	Undisputed	01/23/2026	1099611778	CMS
Olympus Medical Systems Corporation	$72.00	01/09/2024	Travel and Lodging	Undisputed	01/23/2026	1099611780	CMS
Olympus Medical Systems Corporation	$85.00	01/09/2024	Food and Beverage	Undisputed	01/23/2026	1099611782	CMS
Olympus Medical Systems Corporation	$660.00	01/09/2024	Consulting Fee	Undisputed	01/23/2026	1099611784	CMS
Olympus Medical Systems Corporation	$1,320.00	01/09/2024	Consulting Fee	Undisputed	01/23/2026	1099611786	CMS
Olympus Medical Systems Corporation	$1,320.00	01/09/2024	Consulting Fee	Undisputed	01/23/2026	1099611788	CMS
Olympus Medical Systems Corporation	$1,980.00	01/09/2024	Consulting Fee	Undisputed	01/23/2026	1099611790	CMS
Veran Medical Technologies, Inc.	$440.00	01/16/2024	Consulting Fee	Undisputed	01/23/2026	1099612274	CMS

Source & provenance

Dataset: CMS Open Payments — General Payments
Publisher of source data: Centers for Medicare & Medicaid Services
CMS publication date: 2026-01-23
Program years on this page: 2018, 2019, 2020, 2021, 2022, 2023, 2024
Source files: Dataset page · Bulk file · PY2018 , PY2019 , PY2020 , PY2021 , PY2022 , PY2023 , PY2024
Generated from: OP_DTL_GNRL_PGYR2024_P01232026_01102026.csv

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Corrections to the substance of a record route to CMS through its review-and-dispute process; errors in how this site mirrors or displays a record route to us. Both paths are described in Methodology & Data.