Covered recipient · General Payments record

MARK LEEKOFF

Allopathic & Osteopathic Physicians Psychiatry & Neurology Neurology

NPI: 1598183311
CMS profile: 7206991
Location: BRIDGEWATER, NJ

A name match is not confirmation of identity. CMS publishes records for different people under similar names; the NPI, specialty, and location shown on this page are the CMS-published fields that distinguish them.

General Payments · PY2025

$70,218.14

206 records · 0 disputed

Summary and payment records

CMS publication 2026-06-30

Read the payment records

“Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.”
— Centers for Medicare & Medicaid Services, Open Payments

A reported payment reflects a financial relationship a company disclosed. It does not indicate wrongdoing or a conflict of interest, and it says nothing about the quality of a provider's care.

These records are submitted to CMS and attested to by the reporting companies. CMS publishes them as reported; this site mirrors them without independent verification.

A payment attributed to a provider may have been made to a third party — a hospital, practice, or research institution — rather than paid to the provider personally.

How these totals are calculated

This total is the sum of the individual General Payments record amounts CMS published for the labeled program year(s); each record amount is used unmodified. The total itself is computed by this site. 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.
Methodology & Data — sourcing, labeling, and limitations.

Data mirrored July 26, 2026. CMS updates this data on an annual cycle, and corrections or successful disputes made at CMS may not yet appear here. The official CMS record is authoritative for the current state. View the official CMS record ↗

By nature of payment

PY2025 · sorted by reported total

Nature of payment	Amount	Records
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$55,357.50	20
Travel and Lodging	$9,071.42	27
Food and Beverage	$5,639.22	158
Consulting Fee	$150.00	1

By paying entity

PY2025 · sorted by reported total

Paying entity	Amount	Records
TG THERAPEUTICS, INC.	$32,144.09	57
Amgen Inc.	$24,598.56	35
E.R. Squibb & Sons, L.L.C.	$10,660.01	11
NOVARTIS PHARMACEUTICALS CORPORATION	$678.33	33
EMD Serono, Inc.	$589.15	11
Celgene Corporation	$480.58	22
Biogen, Inc.	$351.37	7
Genentech, Inc.	$180.56	4
Axsome Therapeutics, Inc.	$139.60	3
Vanda Pharmaceuticals Inc.	$102.70	6
ANI Pharmaceuticals, Inc.	$53.61	3
Alexion Pharmaceuticals, Inc.	$46.18	3
Novo Nordisk AS	$40.27	2
CYCLE PHARMACEUTICALS INC	$33.41	2
GENZYME CORPORATION	$23.82	1
PFIZER INC.	$18.18	1
Grifols USA, LLC	$16.98	1
Janssen Biotech, Inc.	$16.97	1
Mallinckrodt Hospital Products Inc.	$16.27	1
Genentech USA, Inc.	$13.96	1
ABBVIE INC.	$13.54	1

Payment records · PY2025 (206)

Ordering applied by this site (date, newest first, then paying entity) · record values are shown as CMS published them

Paying entity	Amount	Date	Nature of payment	Dispute status	Published	Record ID	Source
EMD Serono, Inc.	$127.27	12/22/2025	Food and Beverage	No dispute reported	06/30/2026	1236879844	CMS
TG Therapeutics, Inc.	$26.01	12/16/2025	Food and Beverage	No dispute reported	06/30/2026	1226208600	CMS
TG Therapeutics, Inc.	$69.32	12/16/2025	Food and Beverage	No dispute reported	06/30/2026	1226208603	CMS
TG Therapeutics, Inc.	$13.38	12/16/2025	Food and Beverage	No dispute reported	06/30/2026	1226208633	CMS
TG Therapeutics, Inc.	$128.75	12/16/2025	Food and Beverage	No dispute reported	06/30/2026	1226208645	CMS
Celgene Corporation	$18.34	12/11/2025	Food and Beverage	No dispute reported	06/30/2026	1184681138	CMS
Amgen Inc.	$21.61	12/08/2025	Food and Beverage	No dispute reported	06/30/2026	1228533595	CMS
Celgene Corporation	$3.90	12/05/2025	Food and Beverage	No dispute reported	06/30/2026	1184681140	CMS
Novartis Pharmaceuticals Corporation	$15.53	12/03/2025	Food and Beverage	No dispute reported	06/30/2026	1200603275	CMS
Amgen Inc.	$34.09	12/02/2025	Travel and Lodging	No dispute reported	06/30/2026	1226925108	CMS
Amgen Inc.	$3,300.00	12/01/2025	Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	No dispute reported	06/30/2026	1226904056	CMS
EMD Serono, Inc.	$31.46	12/01/2025	Food and Beverage	No dispute reported	06/30/2026	1236902772	CMS
Amgen Inc.	$10.68	11/25/2025	Food and Beverage	No dispute reported	06/30/2026	1227171102	CMS
Novartis Pharmaceuticals Corporation	$16.42	11/21/2025	Food and Beverage	No dispute reported	06/30/2026	1200603273	CMS
Celgene Corporation	$12.79	11/13/2025	Food and Beverage	No dispute reported	06/30/2026	1184681132	CMS
TG Therapeutics, Inc.	$3.19	11/13/2025	Food and Beverage	No dispute reported	06/30/2026	1226208637	CMS
TG Therapeutics, Inc.	$465.00	11/12/2025	Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	No dispute reported	06/30/2026	1226208592	CMS
Axsome Therapeutics, Inc.	$121.36	11/07/2025	Food and Beverage	No dispute reported	06/30/2026	1235777812	CMS
Alexion Pharmaceuticals, Inc.	$14.62	11/06/2025	Food and Beverage	No dispute reported	06/30/2026	1202977684	CMS
Amgen Inc.	$159.10	11/05/2025	Travel and Lodging	No dispute reported	06/30/2026	1226886351	CMS
Amgen Inc.	$102.31	11/05/2025	Food and Beverage	No dispute reported	06/30/2026	1228533605	CMS
Amgen Inc.	$1,100.00	11/03/2025	Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	No dispute reported	06/30/2026	1226884891	CMS
Amgen Inc.	$3,300.00	11/03/2025	Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	No dispute reported	06/30/2026	1226913190	CMS
Biogen, Inc.	$18.65	10/30/2025	Food and Beverage	No dispute reported	06/30/2026	1208444400	CMS
GENZYME CORPORATION	$23.82	10/29/2025	Food and Beverage	No dispute reported	06/30/2026	1233226254	CMS
Amgen Inc.	$472.02	10/27/2025	Travel and Lodging	No dispute reported	06/30/2026	1226909192	CMS
Amgen Inc.	$444.22	10/27/2025	Travel and Lodging	No dispute reported	06/30/2026	1226924424	CMS
Janssen Biotech, Inc.	$16.97	10/23/2025	Food and Beverage	No dispute reported	06/30/2026	1175157567	CMS
Celgene Corporation	$12.17	10/22/2025	Food and Beverage	No dispute reported	06/30/2026	1184681120	CMS
Novartis Pharmaceuticals Corporation	$15.52	10/21/2025	Food and Beverage	No dispute reported	06/30/2026	1200603271	CMS
TG Therapeutics, Inc.	$104.84	10/21/2025	Food and Beverage	No dispute reported	06/30/2026	1226208623	CMS
TG Therapeutics, Inc.	$588.61	10/21/2025	Travel and Lodging	No dispute reported	06/30/2026	1226208629	CMS
TG Therapeutics, Inc.	$3,107.50	10/21/2025	Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	No dispute reported	06/30/2026	1226208648	CMS
Novartis Pharmaceuticals Corporation	$22.20	10/16/2025	Food and Beverage	No dispute reported	06/30/2026	1200603269	CMS
ANI Pharmaceuticals, Inc.	$20.91	10/15/2025	Food and Beverage	No dispute reported	06/30/2026	1248651880	CMS
Celgene Corporation	$4.26	10/10/2025	Food and Beverage	No dispute reported	06/30/2026	1184681122	CMS
Novartis Pharmaceuticals Corporation	$9.21	10/03/2025	Food and Beverage	No dispute reported	06/30/2026	1200625385	CMS
Novartis Pharmaceuticals Corporation	$1.32	10/03/2025	Food and Beverage	No dispute reported	06/30/2026	1200625387	CMS
EMD Serono, Inc.	$6.67	10/01/2025	Food and Beverage	No dispute reported	06/30/2026	1236878893	CMS
EMD Serono, Inc.	$17.06	09/29/2025	Food and Beverage	No dispute reported	06/30/2026	1236891997	CMS
Celgene Corporation	$35.85	09/25/2025	Food and Beverage	No dispute reported	06/30/2026	1184681116	CMS
TG Therapeutics, Inc.	$128.01	09/25/2025	Food and Beverage	No dispute reported	06/30/2026	1226208577	CMS
TG Therapeutics, Inc.	$34.77	09/25/2025	Food and Beverage	No dispute reported	06/30/2026	1226208683	CMS
Amgen Inc.	$331.17	09/24/2025	Travel and Lodging	No dispute reported	06/30/2026	1226895483	CMS
Amgen Inc.	$38.49	09/24/2025	Food and Beverage	No dispute reported	06/30/2026	1228533587	CMS
Novartis Pharmaceuticals Corporation	$45.19	09/24/2025	Food and Beverage	No dispute reported	06/30/2026	1200625335	CMS
TG Therapeutics, Inc.	$129.12	09/24/2025	Food and Beverage	No dispute reported	06/30/2026	1226208565	CMS
TG Therapeutics, Inc.	$52.45	09/24/2025	Food and Beverage	No dispute reported	06/30/2026	1226208679	CMS
Amgen Inc.	$28.35	09/23/2025	Food and Beverage	No dispute reported	06/30/2026	1228533603	CMS
EMD Serono, Inc.	$83.99	09/23/2025	Food and Beverage	No dispute reported	06/30/2026	1236892688	CMS
Genentech, Inc.	$18.49	09/23/2025	Food and Beverage	No dispute reported	06/30/2026	1211542783	CMS
Novartis Pharmaceuticals Corporation	$29.00	09/19/2025	Food and Beverage	No dispute reported	06/30/2026	1200625389	CMS
TG Therapeutics, Inc.	$18.68	09/15/2025	Food and Beverage	No dispute reported	06/30/2026	1226208523	CMS
TG Therapeutics, Inc.	$232.50	09/11/2025	Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	No dispute reported	06/30/2026	1226208607	CMS
Biogen, Inc.	$14.28	09/10/2025	Food and Beverage	No dispute reported	06/30/2026	1208447791	CMS
Celgene Corporation	$3.69	09/10/2025	Food and Beverage	No dispute reported	06/30/2026	1184681114	CMS
EMD Serono, Inc.	$144.22	09/10/2025	Food and Beverage	No dispute reported	06/30/2026	1236883797	CMS
TG Therapeutics, Inc.	$588.61	09/10/2025	Travel and Lodging	No dispute reported	06/30/2026	1226208627	CMS
TG Therapeutics, Inc.	$3,107.50	09/10/2025	Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	No dispute reported	06/30/2026	1226208641	CMS
Vanda Pharmaceuticals Inc.	$16.43	09/08/2025	Food and Beverage	No dispute reported	06/30/2026	1232980784	CMS
E.R. Squibb & Sons, L.L.C.	$2,740.00	09/04/2025	Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	No dispute reported	06/30/2026	1184681238	CMS
Amgen Inc.	$3,300.00	08/28/2025	Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	No dispute reported	06/30/2026	1226908514	CMS
Amgen Inc.	$26.02	08/25/2025	Food and Beverage	No dispute reported	06/30/2026	1228533599	CMS
Biogen, Inc.	$16.40	08/23/2025	Food and Beverage	No dispute reported	06/30/2026	1208396556	CMS
Cycle Pharmaceuticals Inc	$16.51	08/20/2025	Food and Beverage	No dispute reported	06/30/2026	1248904263	CMS
E.R. Squibb & Sons, L.L.C.	$113.96	08/20/2025	Food and Beverage	No dispute reported	06/30/2026	1184681100	CMS
E.R. Squibb & Sons, L.L.C.	$643.97	08/20/2025	Travel and Lodging	No dispute reported	06/30/2026	1184681236	CMS
TG Therapeutics, Inc.	$18.48	08/19/2025	Food and Beverage	No dispute reported	06/30/2026	1226208519	CMS
Novartis Pharmaceuticals Corporation	$8.13	08/13/2025	Food and Beverage	No dispute reported	06/30/2026	1200625379	CMS
Novartis Pharmaceuticals Corporation	$5.82	08/13/2025	Food and Beverage	No dispute reported	06/30/2026	1200625381	CMS
Genentech, Inc.	$101.47	08/12/2025	Food and Beverage	No dispute reported	06/30/2026	1211542778	CMS
Celgene Corporation	$0.91	08/11/2025	Food and Beverage	No dispute reported	06/30/2026	1184681094	CMS
Celgene Corporation	$16.62	08/11/2025	Food and Beverage	No dispute reported	06/30/2026	1184681096	CMS
Novo Nordisk Inc	$20.98	08/07/2025	Food and Beverage	No dispute reported	06/30/2026	1189113526	CMS
Novartis Pharmaceuticals Corporation	$22.31	08/04/2025	Food and Beverage	No dispute reported	06/30/2026	1200625375	CMS
Novartis Pharmaceuticals Corporation	$1.46	08/04/2025	Food and Beverage	No dispute reported	06/30/2026	1200625377	CMS
Alexion Pharmaceuticals, Inc.	$14.54	07/31/2025	Food and Beverage	No dispute reported	06/30/2026	1202977412	CMS
TG Therapeutics, Inc.	$132.16	07/31/2025	Food and Beverage	No dispute reported	06/30/2026	1226208464	CMS
Biogen, Inc.	$10.49	07/29/2025	Food and Beverage	No dispute reported	06/30/2026	1208386309	CMS
TG Therapeutics, Inc.	$22.55	07/28/2025	Food and Beverage	No dispute reported	06/30/2026	1226208569	CMS
Novartis Pharmaceuticals Corporation	$1.33	07/23/2025	Food and Beverage	No dispute reported	06/30/2026	1200625371	CMS
Novartis Pharmaceuticals Corporation	$21.81	07/23/2025	Food and Beverage	No dispute reported	06/30/2026	1200625373	CMS
PFIZER INC.	$18.18	07/19/2025	Food and Beverage	No dispute reported	06/30/2026	1229284649	CMS
Vanda Pharmaceuticals Inc.	$17.50	07/18/2025	Food and Beverage	No dispute reported	06/30/2026	1232980782	CMS
Amgen Inc.	$18.67	07/16/2025	Food and Beverage	No dispute reported	06/30/2026	1228533597	CMS
Grifols USA, LLC	$16.98	07/15/2025	Food and Beverage	No dispute reported	06/30/2026	1249579312	CMS
TG Therapeutics, Inc.	$16.18	07/14/2025	Food and Beverage	No dispute reported	06/30/2026	1226208445	CMS
Celgene Corporation	$0.46	07/07/2025	Food and Beverage	No dispute reported	06/30/2026	1184681074	CMS
Celgene Corporation	$16.68	07/07/2025	Food and Beverage	No dispute reported	06/30/2026	1184681076	CMS
Novartis Pharmaceuticals Corporation	$12.33	07/03/2025	Food and Beverage	No dispute reported	06/30/2026	1200625367	CMS
Novartis Pharmaceuticals Corporation	$1.29	07/03/2025	Food and Beverage	No dispute reported	06/30/2026	1200625369	CMS
ABBVIE INC.	$13.54	07/02/2025	Food and Beverage	No dispute reported	06/30/2026	1202285702	CMS
Axsome Therapeutics, Inc.	$16.72	06/27/2025	Food and Beverage	No dispute reported	06/30/2026	1235433436	CMS
Axsome Therapeutics, Inc.	$1.52	06/27/2025	Food and Beverage	No dispute reported	06/30/2026	1235433450	CMS
Amgen Inc.	$6.06	06/26/2025	Food and Beverage	No dispute reported	06/30/2026	1227171104	CMS
Amgen Inc.	$17.50	06/25/2025	Food and Beverage	No dispute reported	06/30/2026	1228533593	CMS
Novartis Pharmaceuticals Corporation	$138.19	06/25/2025	Food and Beverage	No dispute reported	06/30/2026	1200625333	CMS
EMD Serono, Inc.	$15.83	06/19/2025	Food and Beverage	No dispute reported	06/30/2026	1236905563	CMS
EMD Serono, Inc.	$93.90	06/19/2025	Food and Beverage	No dispute reported	06/30/2026	1236906467	CMS
Amgen Inc.	$550.00	06/18/2025	Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	No dispute reported	06/30/2026	1226896072	CMS
Amgen Inc.	$3,300.00	06/18/2025	Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	No dispute reported	06/30/2026	1226920901	CMS
Novartis Pharmaceuticals Corporation	$26.02	06/18/2025	Food and Beverage	No dispute reported	06/30/2026	1200625365	CMS
Novartis Pharmaceuticals Corporation	$7.36	06/18/2025	Food and Beverage	No dispute reported	06/30/2026	1200625383	CMS
Amgen Inc.	$794.65	06/16/2025	Travel and Lodging	No dispute reported	06/30/2026	1226885269	CMS
Novo Nordisk Inc	$19.29	06/16/2025	Food and Beverage	No dispute reported	06/30/2026	1188477776	CMS
Celgene Corporation	$17.44	06/13/2025	Food and Beverage	No dispute reported	06/30/2026	1184681060	CMS
Amgen Inc.	$102.43	06/12/2025	Food and Beverage	No dispute reported	06/30/2026	1228533609	CMS
TG Therapeutics, Inc.	$17.06	06/09/2025	Food and Beverage	No dispute reported	06/30/2026	1226208486	CMS
Celgene Corporation	$3.69	06/02/2025	Food and Beverage	No dispute reported	06/30/2026	1184681058	CMS
Vanda Pharmaceuticals Inc.	$17.53	06/02/2025	Food and Beverage	No dispute reported	06/30/2026	1232980780	CMS
Biogen, Inc.	$119.80	05/29/2025	Food and Beverage	No dispute reported	06/30/2026	1208437595	CMS
Novartis Pharmaceuticals Corporation	$26.59	05/29/2025	Food and Beverage	No dispute reported	06/30/2026	1200625359	CMS
E.R. Squibb & Sons, L.L.C.	$2,740.00	05/20/2025	Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	No dispute reported	06/30/2026	1184681202	CMS
Novartis Pharmaceuticals Corporation	$4.53	05/20/2025	Food and Beverage	No dispute reported	06/30/2026	1200625361	CMS
Celgene Corporation	$15.66	05/19/2025	Food and Beverage	No dispute reported	06/30/2026	1184681052	CMS
Amgen Inc.	$19.09	05/16/2025	Food and Beverage	No dispute reported	06/30/2026	1228533585	CMS
Biogen, Inc.	$150.00	05/15/2025	Consulting Fee	No dispute reported	06/30/2026	1208471482	CMS
TG Therapeutics, Inc.	$5.84	05/15/2025	Food and Beverage	No dispute reported	06/30/2026	1226208453	CMS
TG Therapeutics, Inc.	$20.21	05/08/2025	Food and Beverage	No dispute reported	06/30/2026	1226208460	CMS
TG Therapeutics, Inc.	$745.00	05/08/2025	Travel and Lodging	No dispute reported	06/30/2026	1226208510	CMS
TG Therapeutics, Inc.	$112.68	05/08/2025	Food and Beverage	No dispute reported	06/30/2026	1226208534	CMS
TG Therapeutics, Inc.	$5.99	05/08/2025	Food and Beverage	No dispute reported	06/30/2026	1226208538	CMS
TG Therapeutics, Inc.	$551.49	05/08/2025	Travel and Lodging	No dispute reported	06/30/2026	1226208543	CMS
TG Therapeutics, Inc.	$3,672.50	05/08/2025	Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	No dispute reported	06/30/2026	1226208551	CMS
TG Therapeutics, Inc.	$72.30	05/08/2025	Travel and Lodging	No dispute reported	06/30/2026	1226208561	CMS
Amgen Inc.	$7.26	05/02/2025	Food and Beverage	No dispute reported	06/30/2026	1227171106	CMS
E.R. Squibb & Sons, L.L.C.	$506.23	05/01/2025	Travel and Lodging	No dispute reported	06/30/2026	1184681198	CMS
E.R. Squibb & Sons, L.L.C.	$124.99	05/01/2025	Food and Beverage	No dispute reported	06/30/2026	1184681200	CMS
Novartis Pharmaceuticals Corporation	$28.31	04/30/2025	Food and Beverage	No dispute reported	06/30/2026	1200625357	CMS
Celgene Corporation	$18.04	04/28/2025	Food and Beverage	No dispute reported	06/30/2026	1184681042	CMS
TG Therapeutics, Inc.	$4,650.00	04/26/2025	Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	No dispute reported	06/30/2026	1226208468	CMS
TG Therapeutics, Inc.	$139.52	04/26/2025	Travel and Lodging	No dispute reported	06/30/2026	1226208483	CMS
TG Therapeutics, Inc.	$167.58	04/26/2025	Food and Beverage	No dispute reported	06/30/2026	1226208491	CMS
TG Therapeutics, Inc.	$26.83	04/26/2025	Food and Beverage	No dispute reported	06/30/2026	1226208656	CMS
TG Therapeutics, Inc.	$12.44	04/26/2025	Food and Beverage	No dispute reported	06/30/2026	1226208661	CMS
TG Therapeutics, Inc.	$50.68	04/26/2025	Food and Beverage	No dispute reported	06/30/2026	1226208664	CMS
TG Therapeutics, Inc.	$51.08	04/25/2025	Food and Beverage	No dispute reported	06/30/2026	1226208475	CMS
TG Therapeutics, Inc.	$443.17	04/25/2025	Travel and Lodging	No dispute reported	06/30/2026	1226208479	CMS
TG Therapeutics, Inc.	$104.90	04/25/2025	Food and Beverage	No dispute reported	06/30/2026	1226208653	CMS
TG Therapeutics, Inc.	$315.53	04/25/2025	Travel and Lodging	No dispute reported	06/30/2026	1226208672	CMS
Amgen Inc.	$33.60	04/24/2025	Travel and Lodging	No dispute reported	06/30/2026	1226923326	CMS
TG Therapeutics, Inc.	$23.50	04/24/2025	Food and Beverage	No dispute reported	06/30/2026	1226208499	CMS
TG Therapeutics, Inc.	$234.68	04/24/2025	Travel and Lodging	No dispute reported	06/30/2026	1226208515	CMS
TG Therapeutics, Inc.	$596.00	04/24/2025	Travel and Lodging	No dispute reported	06/30/2026	1226208530	CMS
TG Therapeutics, Inc.	$3,672.50	04/24/2025	Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	No dispute reported	06/30/2026	1226208553	CMS
TG Therapeutics, Inc.	$19.20	04/24/2025	Food and Beverage	No dispute reported	06/30/2026	1226208557	CMS
TG Therapeutics, Inc.	$140.00	04/24/2025	Food and Beverage	No dispute reported	06/30/2026	1226208581	CMS
TG Therapeutics, Inc.	$230.52	04/24/2025	Travel and Lodging	No dispute reported	06/30/2026	1226208585	CMS
TG Therapeutics, Inc.	$111.02	04/24/2025	Travel and Lodging	No dispute reported	06/30/2026	1226208588	CMS
Celgene Corporation	$67.83	04/23/2025	Food and Beverage	No dispute reported	06/30/2026	1184681046	CMS
EMD Serono, Inc.	$18.20	04/22/2025	Food and Beverage	No dispute reported	06/30/2026	1236899895	CMS
Celgene Corporation	$5.05	04/15/2025	Food and Beverage	No dispute reported	06/30/2026	1184681044	CMS
Amgen Inc.	$3,300.00	04/11/2025	Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	No dispute reported	06/30/2026	1226891212	CMS
ANI Pharmaceuticals, Inc.	$16.97	04/10/2025	Food and Beverage	No dispute reported	06/30/2026	1248609461	CMS
Novartis Pharmaceuticals Corporation	$11.33	04/10/2025	Food and Beverage	No dispute reported	06/30/2026	1200625351	CMS
Novartis Pharmaceuticals Corporation	$0.56	04/10/2025	Food and Beverage	No dispute reported	06/30/2026	1200625353	CMS
Novartis Pharmaceuticals Corporation	$9.00	04/10/2025	Food and Beverage	No dispute reported	06/30/2026	1200625363	CMS
Amgen Inc.	$96.49	04/08/2025	Food and Beverage	No dispute reported	06/30/2026	1228533591	CMS
TG Therapeutics, Inc.	$18.10	04/02/2025	Food and Beverage	No dispute reported	06/30/2026	1226208441	CMS
Vanda Pharmaceuticals Inc.	$17.67	03/31/2025	Food and Beverage	No dispute reported	06/30/2026	1232980778	CMS
TG Therapeutics, Inc.	$10.00	03/26/2025	Food and Beverage	No dispute reported	06/30/2026	1226208430	CMS
Genentech USA, Inc.	$13.96	03/25/2025	Food and Beverage	No dispute reported	06/30/2026	1211542771	CMS
Celgene Corporation	$17.92	03/19/2025	Food and Beverage	No dispute reported	06/30/2026	1184681032	CMS
TG Therapeutics, Inc.	$18.62	03/18/2025	Food and Beverage	No dispute reported	06/30/2026	1226208427	CMS
TG Therapeutics, Inc.	$18.63	03/18/2025	Food and Beverage	No dispute reported	06/30/2026	1226208433	CMS
Novartis Pharmaceuticals Corporation	$28.13	03/14/2025	Food and Beverage	No dispute reported	06/30/2026	1200625355	CMS
Biogen, Inc.	$21.75	03/13/2025	Food and Beverage	No dispute reported	06/30/2026	1208372588	CMS
EMD Serono, Inc.	$16.01	03/05/2025	Food and Beverage	No dispute reported	06/30/2026	1236924840	CMS
Celgene Corporation	$82.56	02/28/2025	Food and Beverage	No dispute reported	06/30/2026	1184681026	CMS
Amgen Inc.	$30.80	02/27/2025	Travel and Lodging	No dispute reported	06/30/2026	1226905138	CMS
EMD Serono, Inc.	$34.54	02/27/2025	Food and Beverage	No dispute reported	06/30/2026	1236898613	CMS
Genentech, Inc.	$36.74	02/26/2025	Food and Beverage	No dispute reported	06/30/2026	1211542775	CMS
Novartis Pharmaceuticals Corporation	$88.35	02/26/2025	Food and Beverage	No dispute reported	06/30/2026	1200625331	CMS
Amgen Inc.	$3,300.00	02/25/2025	Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	No dispute reported	06/30/2026	1226900189	CMS
ANI Pharmaceuticals, Inc.	$15.73	02/25/2025	Food and Beverage	No dispute reported	06/30/2026	1248598985	CMS
TG Therapeutics, Inc.	$16.62	02/24/2025	Food and Beverage	No dispute reported	06/30/2026	1226208437	CMS
E.R. Squibb & Sons, L.L.C.	$2,740.00	02/21/2025	Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	No dispute reported	06/30/2026	1184681160	CMS
Novartis Pharmaceuticals Corporation	$14.03	02/21/2025	Food and Beverage	No dispute reported	06/30/2026	1200625347	CMS
Novartis Pharmaceuticals Corporation	$9.71	02/21/2025	Food and Beverage	No dispute reported	06/30/2026	1200625349	CMS
Vanda Pharmaceuticals Inc.	$17.27	02/21/2025	Food and Beverage	No dispute reported	06/30/2026	1232980776	CMS
Amgen Inc.	$125.01	02/19/2025	Food and Beverage	No dispute reported	06/30/2026	1228533607	CMS
Celgene Corporation	$2.78	02/18/2025	Food and Beverage	No dispute reported	06/30/2026	1184681010	CMS
Genentech, Inc.	$23.86	02/18/2025	Food and Beverage	No dispute reported	06/30/2026	1211542766	CMS
Alexion Pharmaceuticals, Inc.	$17.02	02/13/2025	Food and Beverage	No dispute reported	06/30/2026	1202981202	CMS
Amgen Inc.	$19.60	02/07/2025	Food and Beverage	No dispute reported	06/30/2026	1228533601	CMS
Celgene Corporation	$106.81	02/04/2025	Food and Beverage	No dispute reported	06/30/2026	1184680996	CMS
Mallinckrodt Hospital Products Inc.	$16.27	02/04/2025	Food and Beverage	No dispute reported	06/30/2026	1211978584	CMS
Novartis Pharmaceuticals Corporation	$17.71	02/03/2025	Food and Beverage	No dispute reported	06/30/2026	1200625343	CMS
Novartis Pharmaceuticals Corporation	$9.46	01/31/2025	Food and Beverage	No dispute reported	06/30/2026	1200625345	CMS
Amgen Inc.	$18.22	01/30/2025	Food and Beverage	No dispute reported	06/30/2026	1228533583	CMS
TG Therapeutics, Inc.	$3,107.50	01/30/2025	Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	No dispute reported	06/30/2026	1226208416	CMS
TG Therapeutics, Inc.	$86.65	01/30/2025	Travel and Lodging	No dispute reported	06/30/2026	1226208419	CMS
Celgene Corporation	$17.13	01/28/2025	Food and Beverage	No dispute reported	06/30/2026	1184681008	CMS
E.R. Squibb & Sons, L.L.C.	$124.09	01/28/2025	Food and Beverage	No dispute reported	06/30/2026	1184681164	CMS
E.R. Squibb & Sons, L.L.C.	$486.60	01/28/2025	Travel and Lodging	No dispute reported	06/30/2026	1184681170	CMS
TG Therapeutics, Inc.	$3,672.50	01/23/2025	Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	No dispute reported	06/30/2026	1226208423	CMS
Cycle Pharmaceuticals Inc	$16.90	01/20/2025	Food and Beverage	No dispute reported	06/30/2026	1248904261	CMS
E.R. Squibb & Sons, L.L.C.	$317.36	01/15/2025	Travel and Lodging	No dispute reported	06/30/2026	1184681212	CMS
E.R. Squibb & Sons, L.L.C.	$122.81	01/15/2025	Food and Beverage	No dispute reported	06/30/2026	1184681214	CMS
Vanda Pharmaceuticals Inc.	$16.30	01/09/2025	Food and Beverage	No dispute reported	06/30/2026	1232980774	CMS
Amgen Inc.	$98.51	01/08/2025	Travel and Lodging	No dispute reported	06/30/2026	1226904496	CMS
Amgen Inc.	$16.00	01/08/2025	Travel and Lodging	No dispute reported	06/30/2026	1226912224	CMS
Amgen Inc.	$76.61	01/08/2025	Food and Beverage	No dispute reported	06/30/2026	1228533589	CMS
Novartis Pharmaceuticals Corporation	$20.81	01/08/2025	Food and Beverage	No dispute reported	06/30/2026	1200625339	CMS
TG Therapeutics, Inc.	$15.64	01/06/2025	Food and Beverage	No dispute reported	06/30/2026	1226208411	CMS
Novartis Pharmaceuticals Corporation	$9.37	01/03/2025	Food and Beverage	No dispute reported	06/30/2026	1200625341	CMS

By program year

All program years on this page · sorted by year

Program year	Amount	Records
PY2019	$11.11	1
PY2020	$1,840.00	1
PY2021	$574.08	20
PY2022	$4,263.91	67
PY2023	$15,863.67	90
PY2024	$39,889.53	144
PY2025	$70,218.14	206

Source & provenance

Dataset: CMS Open Payments — General Payments
Publisher of source data: Centers for Medicare & Medicaid Services
CMS publication date: 2026-06-30
Program years on this page: 2019, 2020, 2021, 2022, 2023, 2024, 2025

Source files and profile matching

Source files: Dataset page · Bulk file · PY2019 , PY2020 , PY2021 , PY2022 , PY2023 , PY2024 , PY2025
Generated from: OP_DTL_GNRL_PGYR2025_P06302026_06032026.csv

One page per canonical provider; split Profile_IDs are merged via Associated_Covered_Recipient_Profile_ID_1/_2 from the Covered Recipient Profile Supplement.

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.

Cite this record.

Permalink https://industrypayments.org/provider/npi-1598183311

Plain: MARK LEEKOFF, NPI 1598183311. IndustryPayments, data edition 2026-07-26T04:22:22Z. https://industrypayments.org/provider/npi-1598183311.
APA 7: IndustryPayments. (2026). MARK LEEKOFF, NPI 1598183311 (Data edition 2026-07-26T04:22:22Z) [Data set]. https://industrypayments.org/provider/npi-1598183311
Bluebook: MARK LEEKOFF, NPI 1598183311, IndustryPayments (data edition 2026-07-26T04:22:22Z), https://industrypayments.org/provider/npi-1598183311.

Source: Centers for Medicare & Medicaid Services, Open Payments.