Covered recipient · General Payments record

MARK SONNENSCHINE

Allopathic & Osteopathic Physicians Internal Medicine Hematology & Oncology

NPI: 1922291939
CMS profile: 359712
Location: BROOKLYN, NY

General Payments · PY2018–2024

$13,423.58

Reported across 545 records
CMS publication 2026-01-23

Latest program year · PY2024

$1,998.81

83 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
Food and Beverage	$1,725.50	80
Education	$189.98	2
Long term medical supply or device loan	$83.33	1

By paying entity

PY2024 · sorted by reported total

Paying entity	Amount	Records
Daiichi Sankyo Inc.	$287.02	10
Janssen Biotech, Inc.	$252.67	11
PFIZER INC.	$215.51	11
NOVARTIS PHARMACEUTICALS CORPORATION	$205.88	6
Merck Sharp & Dohme Corporation	$172.60	8
EISAI INC.	$136.21	7
TAIHO ONCOLOGY, INC.	$124.26	5
AVEO Pharmaceuticals, Inc.	$117.70	2
Takeda Pharmaceuticals U.S.A., Inc.	$94.23	4
E.R. Squibb & Sons, L.L.C.	$88.06	4
Incyte Corporation	$53.00	3
Celgene Corporation	$48.35	2
Bayer HealthCare Pharmaceuticals Inc.	$37.25	2
Mirati Therapeutics, Inc.	$27.75	1
Stemline Therapeutics Inc.	$24.13	1
Rigel Pharmaceuticals, Inc.	$23.37	1
Acerta Pharma LLC	$20.27	1
SOBI, INC	$18.96	1
ARRAY BIOPHARMA INC	$18.41	1
Agios Pharmaceuticals, Inc.	$18.20	1
Alexion Pharmaceuticals, Inc.	$14.98	1

By program year

All program years on this page · sorted by year

Program year	Amount	Records
PY2018	$1,724.92	80
PY2019	$1,647.79	83
PY2020	$2,002.21	59
PY2021	$2,119.35	80
PY2022	$1,698.90	72
PY2023	$2,231.60	88
PY2024	$1,998.81	83

Payment records · PY2024 (83)

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
Agios Pharmaceuticals, Inc.	$18.20	12/09/2024	Food and Beverage	Undisputed	01/23/2026	1149644289	CMS
Alexion Pharmaceuticals, Inc.	$14.98	07/22/2024	Food and Beverage	Undisputed	01/23/2026	1093902553	CMS
ARRAY BIOPHARMA INC	$18.41	03/18/2024	Food and Beverage	Undisputed	01/23/2026	1131296916	CMS
AstraZeneca Pharmaceuticals LP	$20.27	04/08/2024	Food and Beverage	Undisputed	01/23/2026	1104248103	CMS
Aveo Pharmaceuticals, Inc.	$27.71	04/17/2024	Food and Beverage	Undisputed	01/23/2026	1143481954	CMS
Aveo Pharmaceuticals, Inc.	$89.99	04/21/2024	Education	Undisputed	01/23/2026	1143481948	CMS
Bayer Healthcare Pharmaceuticals Inc.	$17.33	02/26/2024	Food and Beverage	Undisputed	01/23/2026	1086168908	CMS
Bayer Healthcare Pharmaceuticals Inc.	$19.92	10/30/2024	Food and Beverage	Undisputed	01/23/2026	1086149799	CMS
Celgene Corporation	$22.29	02/12/2024	Food and Beverage	Undisputed	01/23/2026	1101084293	CMS
Celgene Corporation	$26.06	07/15/2024	Food and Beverage	Undisputed	01/23/2026	1101084307	CMS
Daiichi Sankyo Inc.	$29.30	03/11/2024	Food and Beverage	Undisputed	01/23/2026	1089485218	CMS
Daiichi Sankyo Inc.	$19.56	05/06/2024	Food and Beverage	Undisputed	01/23/2026	1089485222	CMS
Daiichi Sankyo Inc.	$99.99	05/07/2024	Education	Undisputed	01/23/2026	1089485220	CMS
Daiichi Sankyo Inc.	$26.63	05/08/2024	Food and Beverage	Undisputed	01/23/2026	1089485224	CMS
Daiichi Sankyo Inc.	$27.43	05/29/2024	Food and Beverage	Undisputed	01/23/2026	1089485226	CMS
Daiichi Sankyo Inc.	$21.13	07/17/2024	Food and Beverage	Undisputed	01/23/2026	1089485228	CMS
Daiichi Sankyo Inc.	$23.52	09/04/2024	Food and Beverage	Undisputed	01/23/2026	1089485212	CMS
Daiichi Sankyo Inc.	$12.28	09/18/2024	Food and Beverage	Undisputed	01/23/2026	1089485210	CMS
Daiichi Sankyo Inc.	$18.08	10/16/2024	Food and Beverage	Undisputed	01/23/2026	1089485216	CMS
Daiichi Sankyo Inc.	$9.10	10/17/2024	Food and Beverage	Undisputed	01/23/2026	1089485214	CMS
E.R. Squibb & Sons, L.L.C.	$22.15	01/15/2024	Food and Beverage	Undisputed	01/23/2026	1101226725	CMS
E.R. Squibb & Sons, L.L.C.	$24.21	02/21/2024	Food and Beverage	Undisputed	01/23/2026	1101226759	CMS
E.R. Squibb & Sons, L.L.C.	$18.32	07/29/2024	Food and Beverage	Undisputed	01/23/2026	1101226801	CMS
E.R. Squibb & Sons, L.L.C.	$23.38	11/04/2024	Food and Beverage	Undisputed	01/23/2026	1101226819	CMS
Eisai Inc.	$24.95	01/24/2024	Food and Beverage	Undisputed	01/23/2026	1110763869	CMS
Eisai Inc.	$21.51	02/14/2024	Food and Beverage	Undisputed	01/23/2026	1110763867	CMS
Eisai Inc.	$18.20	04/01/2024	Food and Beverage	Undisputed	01/23/2026	1110763871	CMS
Eisai Inc.	$21.32	05/20/2024	Food and Beverage	Undisputed	01/23/2026	1110763873	CMS
Eisai Inc.	$15.00	07/10/2024	Food and Beverage	Undisputed	01/23/2026	1110763865	CMS
Eisai Inc.	$16.07	09/16/2024	Food and Beverage	Undisputed	01/23/2026	1110763863	CMS
Eisai Inc.	$19.16	09/30/2024	Food and Beverage	Undisputed	01/23/2026	1110763861	CMS
Incyte Corporation	$15.75	04/22/2024	Food and Beverage	Undisputed	01/23/2026	1141229447	CMS
Incyte Corporation	$19.11	08/28/2024	Food and Beverage	Undisputed	01/23/2026	1141188294	CMS
Incyte Corporation	$18.14	11/11/2024	Food and Beverage	Undisputed	01/23/2026	1141231989	CMS
Janssen Biotech, Inc.	$24.04	01/03/2024	Food and Beverage	Undisputed	01/23/2026	1078409119	CMS
Janssen Biotech, Inc.	$28.89	01/10/2024	Food and Beverage	Undisputed	01/23/2026	1078408834	CMS
Janssen Biotech, Inc.	$8.31	03/14/2024	Food and Beverage	Undisputed	01/23/2026	1078411416	CMS
Janssen Biotech, Inc.	$29.85	03/20/2024	Food and Beverage	Undisputed	01/23/2026	1078410222	CMS
Janssen Biotech, Inc.	$26.15	06/03/2024	Food and Beverage	Undisputed	01/23/2026	1078411457	CMS
Janssen Biotech, Inc.	$31.64	06/24/2024	Food and Beverage	Undisputed	01/23/2026	1078409033	CMS
Janssen Biotech, Inc.	$24.32	08/21/2024	Food and Beverage	Undisputed	01/23/2026	1078412380	CMS
Janssen Biotech, Inc.	$28.52	09/09/2024	Food and Beverage	Undisputed	01/23/2026	1078409351	CMS
Janssen Biotech, Inc.	$28.91	11/18/2024	Food and Beverage	Undisputed	01/23/2026	1078411338	CMS
Janssen Biotech, Inc.	$2.47	12/02/2024	Food and Beverage	Undisputed	01/23/2026	1078408774	CMS
Janssen Biotech, Inc.	$19.57	12/02/2024	Food and Beverage	Undisputed	01/23/2026	1078412845	CMS
Merck Sharp & Dohme LLC	$21.32	02/05/2024	Food and Beverage	Undisputed	01/23/2026	1141704422	CMS
Merck Sharp & Dohme LLC	$18.59	04/15/2024	Food and Beverage	Undisputed	01/23/2026	1141870403	CMS
Merck Sharp & Dohme LLC	$22.45	05/13/2024	Food and Beverage	Undisputed	01/23/2026	1141704426	CMS
Merck Sharp & Dohme LLC	$22.70	06/05/2024	Food and Beverage	Undisputed	01/23/2026	1141704424	CMS
Merck Sharp & Dohme LLC	$24.41	08/19/2024	Food and Beverage	Undisputed	01/23/2026	1141704430	CMS
Merck Sharp & Dohme LLC	$20.75	09/23/2024	Food and Beverage	Undisputed	01/23/2026	1141704428	CMS
Merck Sharp & Dohme LLC	$20.06	10/28/2024	Food and Beverage	Undisputed	01/23/2026	1141704420	CMS
Merck Sharp & Dohme LLC	$22.32	11/13/2024	Food and Beverage	Undisputed	01/23/2026	1141870415	CMS
Mirati Therapeutics, Inc.	$27.75	04/03/2024	Food and Beverage	Undisputed	01/23/2026	1117160570	CMS
Novartis Pharmaceuticals Corporation	$83.33	01/18/2024	Long term medical supply or device loan	Undisputed	01/23/2026	1087272697	CMS
Novartis Pharmaceuticals Corporation	$16.47	01/31/2024	Food and Beverage	Undisputed	01/23/2026	1087272655	CMS
Novartis Pharmaceuticals Corporation	$26.26	06/17/2024	Food and Beverage	Undisputed	01/23/2026	1087272679	CMS
Novartis Pharmaceuticals Corporation	$31.73	11/20/2024	Food and Beverage	Undisputed	01/23/2026	1087272707	CMS
Novartis Pharmaceuticals Corporation	$23.89	12/16/2024	Food and Beverage	Undisputed	01/23/2026	1087272711	CMS
Novartis Pharmaceuticals Corporation	$24.20	12/18/2024	Food and Beverage	Undisputed	01/23/2026	1087272715	CMS
PFIZER INC.	$26.31	01/29/2024	Food and Beverage	Undisputed	01/23/2026	1131134481	CMS
PFIZER INC.	$22.45	02/07/2024	Food and Beverage	Undisputed	01/23/2026	1131298461	CMS
PFIZER INC.	$23.35	04/19/2024	Food and Beverage	Undisputed	01/23/2026	1131312008	CMS
PFIZER INC.	$7.93	05/22/2024	Food and Beverage	Undisputed	01/23/2026	1131723756	CMS
PFIZER INC.	$18.41	06/10/2024	Food and Beverage	Undisputed	01/23/2026	1131699810	CMS
PFIZER INC.	$21.13	07/01/2024	Food and Beverage	Undisputed	01/23/2026	1131765500	CMS
PFIZER INC.	$24.71	08/12/2024	Food and Beverage	Undisputed	01/23/2026	1131361387	CMS
PFIZER INC.	$20.25	08/26/2024	Food and Beverage	Undisputed	01/23/2026	1131877572	CMS
PFIZER INC.	$22.72	09/05/2024	Food and Beverage	Undisputed	01/23/2026	1131369677	CMS
PFIZER INC.	$19.89	10/14/2024	Food and Beverage	Undisputed	01/23/2026	1131362958	CMS
PFIZER INC.	$8.36	11/27/2024	Food and Beverage	Undisputed	01/23/2026	1131187114	CMS
Rigel Pharmaceuticals, Inc.	$23.37	08/14/2024	Food and Beverage	Undisputed	01/23/2026	1145205476	CMS
SOBI, INC	$18.96	01/08/2024	Food and Beverage	Undisputed	01/23/2026	1141415320	CMS
Stemline Therapeutics Inc.	$24.13	09/11/2024	Food and Beverage	Undisputed	01/23/2026	1142961883	CMS
TAIHO ONCOLOGY, INC.	$25.30	01/17/2024	Food and Beverage	Undisputed	01/23/2026	1137935291	CMS
TAIHO ONCOLOGY, INC.	$24.77	03/27/2024	Food and Beverage	Undisputed	01/23/2026	1137935293	CMS
TAIHO ONCOLOGY, INC.	$22.59	06/26/2024	Food and Beverage	Undisputed	01/23/2026	1137936823	CMS
TAIHO ONCOLOGY, INC.	$21.01	09/25/2024	Food and Beverage	Undisputed	01/23/2026	1137942756	CMS
TAIHO ONCOLOGY, INC.	$30.59	12/11/2024	Food and Beverage	Undisputed	01/23/2026	1137942028	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$23.04	03/04/2024	Food and Beverage	Undisputed	01/23/2026	1144968084	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$21.54	05/22/2024	Food and Beverage	Undisputed	01/23/2026	1144968086	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$25.11	07/31/2024	Food and Beverage	Undisputed	01/23/2026	1144968088	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$24.54	11/25/2024	Food and Beverage	Undisputed	01/23/2026	1144968090	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.