Covered recipient · General Payments record

DARREN W LACKAN

Allopathic & Osteopathic Physicians Internal Medicine Endocrinology, Diabetes & Metabolism

NPI: 1053347534
CMS profile: 319962
Location: FORT WORTH, TX

General Payments · PY2018–2024

$16,703.19

Reported across 575 records
CMS publication 2026-01-23

Latest program year · PY2024

$2,615.81

132 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	$2,615.81	132

By paying entity

PY2024 · sorted by reported total

Paying entity	Amount	Records
Abbott Laboratories	$377.82	18
Amgen Inc.	$293.25	12
Lilly USA, LLC	$273.97	16
Novo Nordisk AS	$260.26	15
DEXCOM, INC.	$110.47	5
Alvogen Inc	$103.55	6
Nevro Corp.	$100.90	5
Corcept Therapeutics	$85.01	4
Xeris Pharmaceuticals, Inc.	$81.08	4
SANOFI-AVENTIS U.S. LLC	$76.13	3
ABBVIE INC.	$74.99	5
Tandem Diabetes Care, Inc.	$62.97	4
Boehringer Ingelheim Pharmaceuticals, Inc.	$57.07	3
Insulet Corporation	$56.09	3
Neurocrine BioSciences, Inc.	$55.85	2
CeQur Corporation	$54.68	1
PFIZER INC.	$49.30	3
NOVARTIS PHARMACEUTICALS CORPORATION	$48.34	2
MannKind Corporation	$43.12	2
Kyowa Kirin, Inc.	$40.81	2
CHIESI USA, INC.	$40.52	2
Medtronic, Inc.	$37.64	2
RECORDATI_RARE_DISEASES_INC.	$36.24	2
IBSA Pharma Inc.	$33.91	2
EISAI INC.	$33.65	1
BETA BIONICS, INC.	$29.78	2
Endo Pharmaceuticals Inc.	$20.87	1
Alexion Pharmaceuticals, Inc.	$20.14	1
Echosens North America, Inc.	$15.03	1
Antares Pharma, Inc.	$14.93	1
Regeneron Healthcare Solutions, Inc.	$14.17	1
TOLMAR, INC.	$13.27	1

By program year

All program years on this page · sorted by year

Program year	Amount	Records
PY2018	$6,588.77	67
PY2019	$1,389.21	63
PY2020	$1,273.06	56
PY2021	$1,637.73	96
PY2022	$1,206.03	57
PY2023	$1,992.58	104
PY2024	$2,615.81	132

Payment records · PY2024 (132)

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
Abbott Laboratories	$24.69	01/24/2024	Food and Beverage	Undisputed	01/23/2026	1124814609	CMS
Abbott Laboratories	$24.84	01/28/2024	Food and Beverage	Undisputed	01/23/2026	1124814611	CMS
Abbott Laboratories	$24.70	03/08/2024	Food and Beverage	Undisputed	01/23/2026	1124814613	CMS
Abbott Laboratories	$19.72	03/11/2024	Food and Beverage	Undisputed	01/23/2026	1124814615	CMS
Abbott Laboratories	$18.96	04/08/2024	Food and Beverage	Undisputed	01/23/2026	1124814617	CMS
Abbott Laboratories	$18.09	05/01/2024	Food and Beverage	Undisputed	01/23/2026	1124814619	CMS
Abbott Laboratories	$20.55	05/22/2024	Food and Beverage	Undisputed	01/23/2026	1124814621	CMS
Abbott Laboratories	$18.46	06/14/2024	Food and Beverage	Undisputed	01/23/2026	1124814623	CMS
Abbott Laboratories	$21.28	07/10/2024	Food and Beverage	Undisputed	01/23/2026	1124814625	CMS
Abbott Laboratories	$20.18	07/24/2024	Food and Beverage	Undisputed	01/23/2026	1124814627	CMS
Abbott Laboratories	$19.92	08/08/2024	Food and Beverage	Undisputed	01/23/2026	1124814629	CMS
Abbott Laboratories	$19.92	09/05/2024	Food and Beverage	Undisputed	01/23/2026	1124814631	CMS
Abbott Laboratories	$19.92	10/07/2024	Food and Beverage	Undisputed	01/23/2026	1124814633	CMS
Abbott Laboratories	$19.92	10/18/2024	Food and Beverage	Undisputed	01/23/2026	1124814635	CMS
Abbott Laboratories	$19.92	11/18/2024	Food and Beverage	Undisputed	01/23/2026	1124814637	CMS
Abbott Laboratories	$22.25	11/29/2024	Food and Beverage	Undisputed	01/23/2026	1124814639	CMS
Abbott Laboratories	$22.25	12/09/2024	Food and Beverage	Undisputed	01/23/2026	1124814641	CMS
Abbott Laboratories	$22.25	12/24/2024	Food and Beverage	Undisputed	01/23/2026	1124814643	CMS
ABBVIE INC.	$15.93	01/30/2024	Food and Beverage	Undisputed	01/23/2026	1104126384	CMS
ABBVIE INC.	$15.93	03/26/2024	Food and Beverage	Undisputed	01/23/2026	1104126386	CMS
ABBVIE INC.	$15.93	06/25/2024	Food and Beverage	Undisputed	01/23/2026	1104126388	CMS
ABBVIE INC.	$13.48	09/04/2024	Food and Beverage	Undisputed	01/23/2026	1104126390	CMS
ABBVIE INC.	$13.72	11/07/2024	Food and Beverage	Undisputed	01/23/2026	1104126392	CMS
Alexion Pharmaceuticals, Inc.	$20.14	04/23/2024	Food and Beverage	Undisputed	01/23/2026	1093921192	CMS
Alvogen Inc	$16.77	01/11/2024	Food and Beverage	Undisputed	01/23/2026	1137624767	CMS
Alvogen Inc	$18.45	02/20/2024	Food and Beverage	Undisputed	01/23/2026	1137624771	CMS
Alvogen Inc	$18.45	04/11/2024	Food and Beverage	Undisputed	01/23/2026	1137624776	CMS
Alvogen Inc	$17.93	07/24/2024	Food and Beverage	Undisputed	01/23/2026	1137624780	CMS
Alvogen Inc	$17.52	08/21/2024	Food and Beverage	Undisputed	01/23/2026	1137624785	CMS
Alvogen Inc	$14.43	10/22/2024	Food and Beverage	Undisputed	01/23/2026	1137624789	CMS
Amgen Inc.	$29.99	02/01/2024	Food and Beverage	Undisputed	01/23/2026	1111626585	CMS
Amgen Inc.	$21.56	02/19/2024	Food and Beverage	Undisputed	01/23/2026	1111626587	CMS
Amgen Inc.	$27.84	03/20/2024	Food and Beverage	Undisputed	01/23/2026	1111626589	CMS
Amgen Inc.	$10.48	04/15/2024	Food and Beverage	Undisputed	01/23/2026	1111626583	CMS
Amgen Inc.	$30.38	04/23/2024	Food and Beverage	Undisputed	01/23/2026	1111626591	CMS
Amgen Inc.	$29.15	05/14/2024	Food and Beverage	Undisputed	01/23/2026	1111626593	CMS
Amgen Inc.	$31.30	06/21/2024	Food and Beverage	Undisputed	01/23/2026	1111626595	CMS
Amgen Inc.	$29.82	07/22/2024	Food and Beverage	Undisputed	01/23/2026	1111626597	CMS
Amgen Inc.	$16.54	08/28/2024	Food and Beverage	Undisputed	01/23/2026	1111626579	CMS
Amgen Inc.	$29.68	09/24/2024	Food and Beverage	Undisputed	01/23/2026	1111626599	CMS
Amgen Inc.	$29.42	11/13/2024	Food and Beverage	Undisputed	01/23/2026	1111626601	CMS
Amgen Inc.	$7.09	12/11/2024	Food and Beverage	Undisputed	01/23/2026	1111626581	CMS
Antares Pharma, Inc.	$14.93	05/17/2024	Food and Beverage	Undisputed	01/23/2026	1146468729	CMS
BETA BIONICS, INC.	$15.14	08/02/2024	Food and Beverage	Undisputed	01/23/2026	1087880487	CMS
BETA BIONICS, INC.	$14.64	12/03/2024	Food and Beverage	Undisputed	01/23/2026	1087887989	CMS
Boehringer Ingelheim Pharmaceuticals, Inc.	$26.23	01/05/2024	Food and Beverage	Undisputed	01/23/2026	1117852901	CMS
Boehringer Ingelheim Pharmaceuticals, Inc.	$14.19	02/15/2024	Food and Beverage	Undisputed	01/23/2026	1117852897	CMS
Boehringer Ingelheim Pharmaceuticals, Inc.	$16.65	04/08/2024	Food and Beverage	Undisputed	01/23/2026	1117852899	CMS
CeQur Corporation	$54.68	08/27/2024	Food and Beverage	Undisputed	01/23/2026	1126844088	CMS
Chiesi USA, Inc.	$20.11	07/30/2024	Food and Beverage	Undisputed	01/23/2026	1151811645	CMS
Chiesi USA, Inc.	$20.41	11/01/2024	Food and Beverage	Undisputed	01/23/2026	1151811648	CMS
Corcept Therapeutics	$23.76	01/04/2024	Food and Beverage	Undisputed	01/23/2026	1117736954	CMS
Corcept Therapeutics	$19.36	04/03/2024	Food and Beverage	Undisputed	01/23/2026	1117736958	CMS
Corcept Therapeutics	$19.46	05/08/2024	Food and Beverage	Undisputed	01/23/2026	1117737176	CMS
Corcept Therapeutics	$22.43	09/19/2024	Food and Beverage	Undisputed	01/23/2026	1117737238	CMS
Dexcom, Inc.	$22.10	02/29/2024	Food and Beverage	Undisputed	01/23/2026	1153294501	CMS
Dexcom, Inc.	$20.19	04/08/2024	Food and Beverage	Undisputed	01/23/2026	1153294503	CMS
Dexcom, Inc.	$24.17	06/14/2024	Food and Beverage	Undisputed	01/23/2026	1153294507	CMS
Dexcom, Inc.	$24.05	07/08/2024	Food and Beverage	Undisputed	01/23/2026	1153294505	CMS
Dexcom, Inc.	$19.96	09/24/2024	Food and Beverage	Undisputed	01/23/2026	1153294509	CMS
Echosens North America, Inc.	$15.03	05/21/2024	Food and Beverage	Undisputed	01/23/2026	1154981970	CMS
Eisai Inc.	$33.65	10/25/2024	Food and Beverage	Undisputed	01/23/2026	1110739581	CMS
Endo Pharmaceuticals Inc.	$20.87	01/25/2024	Food and Beverage	Undisputed	01/23/2026	1137015464	CMS
IBSA Pharma Inc.	$16.96	05/03/2024	Food and Beverage	Undisputed	01/23/2026	1142984290	CMS
IBSA Pharma Inc.	$16.95	12/18/2024	Food and Beverage	Undisputed	01/23/2026	1142987684	CMS
Insulet Corporation	$20.50	05/22/2024	Food and Beverage	Undisputed	01/23/2026	1116800380	CMS
Insulet Corporation	$16.76	10/16/2024	Food and Beverage	Undisputed	01/23/2026	1116823510	CMS
Insulet Corporation	$18.83	12/11/2024	Food and Beverage	Undisputed	01/23/2026	1116823508	CMS
Kyowa Kirin, Inc.	$19.47	08/09/2024	Food and Beverage	Undisputed	01/23/2026	1127028201	CMS
Kyowa Kirin, Inc.	$21.34	12/12/2024	Food and Beverage	Undisputed	01/23/2026	1127028203	CMS
Lilly USA, LLC	$18.07	01/30/2024	Food and Beverage	Undisputed	01/23/2026	1136137773	CMS
Lilly USA, LLC	$0.21	02/26/2024	Food and Beverage	Undisputed	01/23/2026	1136125767	CMS
Lilly USA, LLC	$19.14	02/27/2024	Food and Beverage	Undisputed	01/23/2026	1136146021	CMS
Lilly USA, LLC	$21.91	04/10/2024	Food and Beverage	Undisputed	01/23/2026	1136125765	CMS
Lilly USA, LLC	$21.14	04/22/2024	Food and Beverage	Undisputed	01/23/2026	1136125299	CMS
Lilly USA, LLC	$14.65	04/25/2024	Food and Beverage	Undisputed	01/23/2026	1136133835	CMS
Lilly USA, LLC	$10.72	06/19/2024	Food and Beverage	Undisputed	01/23/2026	1136146015	CMS
Lilly USA, LLC	$18.68	07/17/2024	Food and Beverage	Undisputed	01/23/2026	1136146017	CMS
Lilly USA, LLC	$14.53	07/31/2024	Food and Beverage	Undisputed	01/23/2026	1136137771	CMS
Lilly USA, LLC	$21.62	08/02/2024	Food and Beverage	Undisputed	01/23/2026	1136148502	CMS
Lilly USA, LLC	$26.54	08/29/2024	Food and Beverage	Undisputed	01/23/2026	1136148500	CMS
Lilly USA, LLC	$18.07	09/12/2024	Food and Beverage	Undisputed	01/23/2026	1136146023	CMS
Lilly USA, LLC	$17.23	09/18/2024	Food and Beverage	Undisputed	01/23/2026	1136125297	CMS
Lilly USA, LLC	$22.15	10/10/2024	Food and Beverage	Undisputed	01/23/2026	1136148504	CMS
Lilly USA, LLC	$6.80	10/29/2024	Food and Beverage	Undisputed	01/23/2026	1136137775	CMS
Lilly USA, LLC	$22.51	11/19/2024	Food and Beverage	Undisputed	01/23/2026	1136146019	CMS
Mannkind Corporation	$19.18	01/09/2024	Food and Beverage	Undisputed	01/23/2026	1145844989	CMS
Mannkind Corporation	$23.94	08/12/2024	Food and Beverage	Undisputed	01/23/2026	1145844991	CMS
Medtronic, Inc.	$18.84	01/04/2024	Food and Beverage	Undisputed	01/23/2026	1117043228	CMS
Medtronic, Inc.	$18.80	02/09/2024	Food and Beverage	Undisputed	01/23/2026	1117043230	CMS
Neurocrine Biosciences, Inc.	$33.01	10/14/2024	Food and Beverage	Undisputed	01/23/2026	1150821595	CMS
Neurocrine Biosciences, Inc.	$22.84	11/15/2024	Food and Beverage	Undisputed	01/23/2026	1150847153	CMS
Nevro Corp.	$25.60	01/03/2024	Food and Beverage	Undisputed	01/23/2026	1130778177	CMS
Nevro Corp.	$19.72	02/12/2024	Food and Beverage	Undisputed	01/23/2026	1130778175	CMS
Nevro Corp.	$19.16	04/29/2024	Food and Beverage	Undisputed	01/23/2026	1130778173	CMS
Nevro Corp.	$19.38	08/26/2024	Food and Beverage	Undisputed	01/23/2026	1130778171	CMS
Nevro Corp.	$17.04	10/21/2024	Food and Beverage	Undisputed	01/23/2026	1130778169	CMS
Novartis Pharmaceuticals Corporation	$22.72	03/28/2024	Food and Beverage	Undisputed	01/23/2026	1087136834	CMS
Novartis Pharmaceuticals Corporation	$25.62	06/06/2024	Food and Beverage	Undisputed	01/23/2026	1087136840	CMS
Novo Nordisk Inc	$24.60	01/18/2024	Food and Beverage	Undisputed	01/23/2026	1097030472	CMS
Novo Nordisk Inc	$12.38	03/18/2024	Food and Beverage	Undisputed	01/23/2026	1097145795	CMS
Novo Nordisk Inc	$2.68	04/08/2024	Food and Beverage	Undisputed	01/23/2026	1097533401	CMS
Novo Nordisk Inc	$14.80	04/16/2024	Food and Beverage	Undisputed	01/23/2026	1096614580	CMS
Novo Nordisk Inc	$23.53	05/06/2024	Food and Beverage	Undisputed	01/23/2026	1097644470	CMS
Novo Nordisk Inc	$13.72	05/15/2024	Food and Beverage	Undisputed	01/23/2026	1097592754	CMS
Novo Nordisk Inc	$15.37	06/26/2024	Food and Beverage	Undisputed	01/23/2026	1097469840	CMS
Novo Nordisk Inc	$16.59	07/10/2024	Food and Beverage	Undisputed	01/23/2026	1096615052	CMS
Novo Nordisk Inc	$17.25	07/23/2024	Food and Beverage	Undisputed	01/23/2026	1096627100	CMS
Novo Nordisk Inc	$14.80	09/11/2024	Food and Beverage	Undisputed	01/23/2026	1097348441	CMS
Novo Nordisk Inc	$25.92	09/23/2024	Food and Beverage	Undisputed	01/23/2026	1096779704	CMS
Novo Nordisk Inc	$22.14	10/29/2024	Food and Beverage	Undisputed	01/23/2026	1096883189	CMS
Novo Nordisk Inc	$14.86	11/06/2024	Food and Beverage	Undisputed	01/23/2026	1096918918	CMS
Novo Nordisk Inc	$15.85	12/04/2024	Food and Beverage	Undisputed	01/23/2026	1097405918	CMS
Novo Nordisk Inc	$25.77	12/16/2024	Food and Beverage	Undisputed	01/23/2026	1096651334	CMS
PFIZER INC.	$16.61	02/07/2024	Food and Beverage	Undisputed	01/23/2026	1131008377	CMS
PFIZER INC.	$16.47	06/17/2024	Food and Beverage	Undisputed	01/23/2026	1131687841	CMS
PFIZER INC.	$16.22	10/01/2024	Food and Beverage	Undisputed	01/23/2026	1132075071	CMS
RECORDATI_RARE_DISEASES_INC.	$15.69	03/23/2024	Food and Beverage	Undisputed	01/23/2026	1139164118	CMS
RECORDATI_RARE_DISEASES_INC.	$20.55	09/09/2024	Food and Beverage	Undisputed	01/23/2026	1139164120	CMS
Regeneron Healthcare Solutions, Inc.	$14.17	03/06/2024	Food and Beverage	Undisputed	01/23/2026	1114094539	CMS
SANOFI-AVENTIS U.S. LLC	$20.86	05/20/2024	Food and Beverage	Undisputed	01/23/2026	1139709275	CMS
SANOFI-AVENTIS U.S. LLC	$26.40	07/19/2024	Food and Beverage	Undisputed	01/23/2026	1139709281	CMS
SANOFI-AVENTIS U.S. LLC	$28.87	09/27/2024	Food and Beverage	Undisputed	01/23/2026	1139709309	CMS
Tandem Diabetes Care, Inc.	$14.72	04/11/2024	Food and Beverage	Undisputed	01/23/2026	1138742753	CMS
Tandem Diabetes Care, Inc.	$21.07	07/12/2024	Food and Beverage	Undisputed	01/23/2026	1138742819	CMS
Tandem Diabetes Care, Inc.	$13.01	10/09/2024	Food and Beverage	Undisputed	01/23/2026	1138742719	CMS
Tandem Diabetes Care, Inc.	$14.17	11/14/2024	Food and Beverage	Undisputed	01/23/2026	1138742691	CMS
Tolmar, Inc.	$13.27	11/11/2024	Food and Beverage	Undisputed	01/23/2026	1138715772	CMS
Xeris Pharmaceuticals, Inc.	$20.97	02/23/2024	Food and Beverage	Undisputed	01/23/2026	1144591592	CMS
Xeris Pharmaceuticals, Inc.	$19.47	05/24/2024	Food and Beverage	Undisputed	01/23/2026	1144591594	CMS
Xeris Pharmaceuticals, Inc.	$19.17	10/23/2024	Food and Beverage	Undisputed	01/23/2026	1144591598	CMS
Xeris Pharmaceuticals, Inc.	$21.47	10/24/2024	Food and Beverage	Undisputed	01/23/2026	1144591596	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.