Covered recipient · General Payments record

IAN B DEROOCK

Allopathic & Osteopathic Physicians Internal Medicine Hematology & Oncology

NPI: 1114900479
CMS profile: 322783
Location: CHANDLER, AZ

General Payments · PY2018–2024

$16,241.51

Reported across 864 records
CMS publication 2026-01-23

Latest program year · PY2024

$3,330.94

135 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	$2,805.94	134
Consulting Fee	$525.00	1

By paying entity

PY2024 · sorted by reported total

Paying entity	Amount	Records
Acerta Pharma LLC	$676.10	8
NOVARTIS PHARMACEUTICALS CORPORATION	$358.29	16
PFIZER INC.	$301.04	16
EISAI INC.	$189.98	8
ABBVIE INC.	$181.24	10
Celgene Corporation	$161.63	9
E.R. Squibb & Sons, L.L.C.	$156.82	7
Daiichi Sankyo Inc.	$126.04	5
Merck Sharp & Dohme Corporation	$90.46	4
Janssen Biotech, Inc.	$85.39	4
PUMA BIOTECHNOLOGY, INC.	$74.91	3
Genmab U.S., Inc.	$66.42	3
Lilly USA, LLC	$65.83	3
Astellas Pharma US Inc	$65.54	3
Alexion Pharmaceuticals, Inc.	$65.38	3
Takeda Pharmaceuticals U.S.A., Inc.	$54.17	2
Rigel Pharmaceuticals, Inc.	$50.75	2
Ipsen Biopharmaceuticals, Inc	$48.91	3
SpringWorks Therapeutics, Inc.	$44.96	2
Blueprint Medicines Corporation	$42.49	2
Stemline Therapeutics Inc.	$41.52	2
GlaxoSmithKline, LLC.	$40.43	2
Regeneron Healthcare Solutions, Inc.	$33.58	1
TerSera Therapeutics LLC	$32.80	1
Gilead Sciences, Inc.	$31.33	2
Bayer HealthCare Pharmaceuticals Inc.	$29.90	2
ADC Therapeutics America, Inc.	$22.75	1
BeiGene USA, Inc.	$21.49	1
Deciphera Pharmaceuticals Inc.	$21.31	1
Kite Pharma, Inc.	$20.54	1
JAZZ PHARMACEUTICALS INC.	$20.30	1
GENZYME CORPORATION	$19.06	1
SOBI, INC	$18.78	1
AVEO Pharmaceuticals, Inc.	$18.54	1
Mirati Therapeutics, Inc.	$17.30	1
Adaptive Biotechnologies Corporation	$13.61	1
Sumitomo Pharma America, Inc.	$13.27	1
ARRAY BIOPHARMA INC	$8.08	1

By program year

All program years on this page · sorted by year

Program year	Amount	Records
PY2018	$799.02	67
PY2019	$1,598.18	102
PY2020	$1,507.90	94
PY2021	$3,225.21	177
PY2022	$3,212.79	171
PY2023	$2,567.47	118
PY2024	$3,330.94	135

Payment records · PY2024 (135)

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
ABBVIE INC.	$5.41	02/15/2024	Food and Beverage	Undisputed	01/23/2026	1103627302	CMS
ABBVIE INC.	$14.97	05/22/2024	Food and Beverage	Undisputed	01/23/2026	1103627304	CMS
ABBVIE INC.	$23.31	06/24/2024	Food and Beverage	Undisputed	01/23/2026	1103627306	CMS
ABBVIE INC.	$22.28	07/08/2024	Food and Beverage	Undisputed	01/23/2026	1103627308	CMS
ABBVIE INC.	$28.33	08/02/2024	Food and Beverage	Undisputed	01/23/2026	1103627310	CMS
ABBVIE INC.	$20.79	08/09/2024	Food and Beverage	Undisputed	01/23/2026	1103627312	CMS
ABBVIE INC.	$8.23	08/14/2024	Food and Beverage	Undisputed	01/23/2026	1103627314	CMS
ABBVIE INC.	$23.89	10/18/2024	Food and Beverage	Undisputed	01/23/2026	1103627316	CMS
ABBVIE INC.	$24.21	11/05/2024	Food and Beverage	Undisputed	01/23/2026	1103627318	CMS
ABBVIE INC.	$9.82	12/10/2024	Food and Beverage	Undisputed	01/23/2026	1103627320	CMS
Adaptive Biotechnologies Corporation	$13.61	10/22/2024	Food and Beverage	Undisputed	01/23/2026	1150260050	CMS
ADC Therapeutics America, Inc.	$22.75	04/04/2024	Food and Beverage	Undisputed	01/23/2026	1121186242	CMS
Alexion Pharmaceuticals, Inc.	$21.84	03/21/2024	Food and Beverage	Undisputed	01/23/2026	1093961187	CMS
Alexion Pharmaceuticals, Inc.	$14.55	05/29/2024	Food and Beverage	Undisputed	01/23/2026	1093988657	CMS
Alexion Pharmaceuticals, Inc.	$28.99	10/09/2024	Food and Beverage	Undisputed	01/23/2026	1094012201	CMS
ARRAY BIOPHARMA INC	$8.08	02/16/2024	Food and Beverage	Undisputed	01/23/2026	1131721170	CMS
Astellas Pharma US Inc	$28.21	02/19/2024	Food and Beverage	Undisputed	01/23/2026	1139267986	CMS
Astellas Pharma US Inc	$19.42	02/29/2024	Food and Beverage	Undisputed	01/23/2026	1139302468	CMS
Astellas Pharma US Inc	$17.91	03/11/2024	Food and Beverage	Undisputed	01/23/2026	1139303714	CMS
AstraZeneca Pharmaceuticals LP	$16.76	02/02/2024	Food and Beverage	Undisputed	01/23/2026	1105453779	CMS
AstraZeneca Pharmaceuticals LP	$1.08	02/08/2024	Food and Beverage	Undisputed	01/23/2026	1104398089	CMS
AstraZeneca Pharmaceuticals LP	$17.21	02/09/2024	Food and Beverage	Undisputed	01/23/2026	1104462654	CMS
AstraZeneca Pharmaceuticals LP	$30.46	02/29/2024	Food and Beverage	Undisputed	01/23/2026	1105437638	CMS
AstraZeneca Pharmaceuticals LP	$31.37	08/29/2024	Food and Beverage	Undisputed	01/23/2026	1104665133	CMS
AstraZeneca Pharmaceuticals LP	$30.01	09/17/2024	Food and Beverage	Undisputed	01/23/2026	1105853914	CMS
AstraZeneca Pharmaceuticals LP	$24.21	09/20/2024	Food and Beverage	Undisputed	01/23/2026	1105564962	CMS
AstraZeneca Pharmaceuticals LP	$525.00	10/24/2024	Consulting Fee	Undisputed	01/23/2026	1104222083	CMS
Aveo Pharmaceuticals, Inc.	$18.54	01/12/2024	Food and Beverage	Undisputed	01/23/2026	1143478682	CMS
Bayer Healthcare Pharmaceuticals Inc.	$15.12	03/27/2024	Food and Beverage	Undisputed	01/23/2026	1086121578	CMS
Bayer Healthcare Pharmaceuticals Inc.	$14.78	07/26/2024	Food and Beverage	Undisputed	01/23/2026	1086199224	CMS
BeiGene USA, Inc.	$21.49	09/10/2024	Food and Beverage	Undisputed	01/23/2026	1120862771	CMS
Blueprint Medicines Corporation	$18.96	02/01/2024	Food and Beverage	Undisputed	01/23/2026	1147441660	CMS
Blueprint Medicines Corporation	$23.53	06/06/2024	Food and Beverage	Undisputed	01/23/2026	1147441792	CMS
Celgene Corporation	$19.81	04/22/2024	Food and Beverage	Undisputed	01/23/2026	1101126824	CMS
Celgene Corporation	$19.43	06/14/2024	Food and Beverage	Undisputed	01/23/2026	1101126826	CMS
Celgene Corporation	$13.96	07/09/2024	Food and Beverage	Undisputed	01/23/2026	1101126828	CMS
Celgene Corporation	$26.69	08/19/2024	Food and Beverage	Undisputed	01/23/2026	1101126830	CMS
Celgene Corporation	$20.04	09/26/2024	Food and Beverage	Undisputed	01/23/2026	1101126834	CMS
Celgene Corporation	$26.33	10/16/2024	Food and Beverage	Undisputed	01/23/2026	1101126832	CMS
Celgene Corporation	$2.18	10/16/2024	Food and Beverage	Undisputed	01/23/2026	1101126836	CMS
Celgene Corporation	$2.83	10/16/2024	Food and Beverage	Undisputed	01/23/2026	1101126838	CMS
Celgene Corporation	$30.36	12/10/2024	Food and Beverage	Undisputed	01/23/2026	1101126840	CMS
Daiichi Sankyo Inc.	$24.65	02/16/2024	Food and Beverage	Undisputed	01/23/2026	1089415034	CMS
Daiichi Sankyo Inc.	$22.21	02/21/2024	Food and Beverage	Undisputed	01/23/2026	1089415032	CMS
Daiichi Sankyo Inc.	$26.05	05/10/2024	Food and Beverage	Undisputed	01/23/2026	1089415036	CMS
Daiichi Sankyo Inc.	$29.91	08/08/2024	Food and Beverage	Undisputed	01/23/2026	1089415038	CMS
Daiichi Sankyo Inc.	$23.22	12/04/2024	Food and Beverage	Undisputed	01/23/2026	1089415030	CMS
Deciphera Pharmaceuticals Inc.	$21.31	02/06/2024	Food and Beverage	Undisputed	01/23/2026	1145872941	CMS
E.R. Squibb & Sons, L.L.C.	$9.53	01/02/2024	Food and Beverage	Undisputed	01/23/2026	1101393928	CMS
E.R. Squibb & Sons, L.L.C.	$9.57	01/23/2024	Food and Beverage	Undisputed	01/23/2026	1101393926	CMS
E.R. Squibb & Sons, L.L.C.	$95.75	02/22/2024	Food and Beverage	Undisputed	01/23/2026	1101393932	CMS
E.R. Squibb & Sons, L.L.C.	$10.32	06/17/2024	Food and Beverage	Undisputed	01/23/2026	1101393976	CMS
E.R. Squibb & Sons, L.L.C.	$9.98	06/20/2024	Food and Beverage	Undisputed	01/23/2026	1101393968	CMS
E.R. Squibb & Sons, L.L.C.	$11.85	08/15/2024	Food and Beverage	Undisputed	01/23/2026	1101393994	CMS
E.R. Squibb & Sons, L.L.C.	$9.82	09/18/2024	Food and Beverage	Undisputed	01/23/2026	1101394002	CMS
Eisai Inc.	$22.92	03/15/2024	Food and Beverage	Undisputed	01/23/2026	1110749334	CMS
Eisai Inc.	$19.96	04/10/2024	Food and Beverage	Undisputed	01/23/2026	1110749338	CMS
Eisai Inc.	$22.34	04/23/2024	Food and Beverage	Undisputed	01/23/2026	1110749340	CMS
Eisai Inc.	$22.74	07/31/2024	Food and Beverage	Undisputed	01/23/2026	1110749336	CMS
Eisai Inc.	$15.39	08/20/2024	Food and Beverage	Undisputed	01/23/2026	1110749344	CMS
Eisai Inc.	$27.51	09/03/2024	Food and Beverage	Undisputed	01/23/2026	1110749342	CMS
Eisai Inc.	$30.54	10/15/2024	Food and Beverage	Undisputed	01/23/2026	1110749348	CMS
Eisai Inc.	$28.58	11/06/2024	Food and Beverage	Undisputed	01/23/2026	1110749346	CMS
Genmab U.S., Inc.	$21.00	03/29/2024	Food and Beverage	Undisputed	01/23/2026	1126827254	CMS
Genmab U.S., Inc.	$17.43	06/07/2024	Food and Beverage	Undisputed	01/23/2026	1126827252	CMS
Genmab U.S., Inc.	$27.99	11/08/2024	Food and Beverage	Undisputed	01/23/2026	1126827256	CMS
GENZYME CORPORATION	$19.06	08/27/2024	Food and Beverage	Undisputed	01/23/2026	1139759510	CMS
Gilead Sciences, Inc.	$16.90	01/10/2024	Food and Beverage	Undisputed	01/23/2026	1133803796	CMS
Gilead Sciences, Inc.	$14.43	11/05/2024	Food and Beverage	Undisputed	01/23/2026	1133803798	CMS
GlaxoSmithKline, LLC.	$13.49	08/07/2024	Food and Beverage	Undisputed	01/23/2026	1116517436	CMS
GlaxoSmithKline, LLC.	$26.94	11/13/2024	Food and Beverage	Undisputed	01/23/2026	1116695147	CMS
Ipsen Biopharmaceuticals, Inc	$17.18	05/16/2024	Food and Beverage	Undisputed	01/23/2026	1091962073	CMS
Ipsen Biopharmaceuticals, Inc	$18.18	09/11/2024	Food and Beverage	Undisputed	01/23/2026	1091962069	CMS
Ipsen Biopharmaceuticals, Inc	$13.55	12/11/2024	Food and Beverage	Undisputed	01/23/2026	1091962071	CMS
Janssen Biotech, Inc.	$23.39	03/28/2024	Food and Beverage	Undisputed	01/23/2026	1078272861	CMS
Janssen Biotech, Inc.	$22.97	06/11/2024	Food and Beverage	Undisputed	01/23/2026	1078272953	CMS
Janssen Biotech, Inc.	$18.01	08/22/2024	Food and Beverage	Undisputed	01/23/2026	1078273055	CMS
Janssen Biotech, Inc.	$21.02	10/29/2024	Food and Beverage	Undisputed	01/23/2026	1078272803	CMS
JAZZ PHARMACEUTICALS INC.	$20.30	02/15/2024	Food and Beverage	Undisputed	01/23/2026	1150199873	CMS
Kite Pharma, Inc.	$20.54	12/18/2024	Food and Beverage	Undisputed	01/23/2026	1128613883	CMS
Lilly USA, LLC	$19.28	04/11/2024	Food and Beverage	Undisputed	01/23/2026	1135025050	CMS
Lilly USA, LLC	$24.00	07/17/2024	Food and Beverage	Undisputed	01/23/2026	1134984620	CMS
Lilly USA, LLC	$22.55	11/13/2024	Food and Beverage	Undisputed	01/23/2026	1135030708	CMS
Merck Sharp & Dohme LLC	$20.52	03/27/2024	Food and Beverage	Undisputed	01/23/2026	1141632549	CMS
Merck Sharp & Dohme LLC	$26.62	05/22/2024	Food and Beverage	Undisputed	01/23/2026	1141921246	CMS
Merck Sharp & Dohme LLC	$17.78	09/13/2024	Food and Beverage	Undisputed	01/23/2026	1141632453	CMS
Merck Sharp & Dohme LLC	$25.54	12/13/2024	Food and Beverage	Undisputed	01/23/2026	1141632451	CMS
Mirati Therapeutics, Inc.	$17.30	08/12/2024	Food and Beverage	Undisputed	01/23/2026	1117167511	CMS
Novartis Pharmaceuticals Corporation	$13.15	01/05/2024	Food and Beverage	Undisputed	01/23/2026	1086848971	CMS
Novartis Pharmaceuticals Corporation	$24.88	02/05/2024	Food and Beverage	Undisputed	01/23/2026	1086848975	CMS
Novartis Pharmaceuticals Corporation	$21.96	02/09/2024	Food and Beverage	Undisputed	01/23/2026	1086848965	CMS
Novartis Pharmaceuticals Corporation	$25.25	03/05/2024	Food and Beverage	Undisputed	01/23/2026	1086848983	CMS
Novartis Pharmaceuticals Corporation	$24.21	03/14/2024	Food and Beverage	Undisputed	01/23/2026	1086848979	CMS
Novartis Pharmaceuticals Corporation	$32.47	05/23/2024	Food and Beverage	Undisputed	01/23/2026	1086848991	CMS
Novartis Pharmaceuticals Corporation	$24.01	05/29/2024	Food and Beverage	Undisputed	01/23/2026	1086848993	CMS
Novartis Pharmaceuticals Corporation	$23.16	05/30/2024	Food and Beverage	Undisputed	01/23/2026	1086848999	CMS
Novartis Pharmaceuticals Corporation	$17.58	06/18/2024	Food and Beverage	Undisputed	01/23/2026	1086849003	CMS
Novartis Pharmaceuticals Corporation	$10.05	07/30/2024	Food and Beverage	Undisputed	01/23/2026	1086849015	CMS
Novartis Pharmaceuticals Corporation	$30.68	08/13/2024	Food and Beverage	Undisputed	01/23/2026	1086849013	CMS
Novartis Pharmaceuticals Corporation	$21.51	08/15/2024	Food and Beverage	Undisputed	01/23/2026	1086849017	CMS
Novartis Pharmaceuticals Corporation	$19.06	08/27/2024	Food and Beverage	Undisputed	01/23/2026	1086849021	CMS
Novartis Pharmaceuticals Corporation	$24.23	09/12/2024	Food and Beverage	Undisputed	01/23/2026	1086849019	CMS
Novartis Pharmaceuticals Corporation	$20.67	10/23/2024	Food and Beverage	Undisputed	01/23/2026	1086849031	CMS
Novartis Pharmaceuticals Corporation	$25.42	11/07/2024	Food and Beverage	Undisputed	01/23/2026	1086849035	CMS
PFIZER INC.	$17.21	01/25/2024	Food and Beverage	Undisputed	01/23/2026	1131726412	CMS
PFIZER INC.	$12.82	01/31/2024	Food and Beverage	Undisputed	01/23/2026	1131726943	CMS
PFIZER INC.	$16.77	02/14/2024	Food and Beverage	Undisputed	01/23/2026	1131284987	CMS
PFIZER INC.	$14.67	02/22/2024	Food and Beverage	Undisputed	01/23/2026	1131721884	CMS
PFIZER INC.	$30.95	03/06/2024	Food and Beverage	Undisputed	01/23/2026	1131299124	CMS
PFIZER INC.	$21.88	04/04/2024	Food and Beverage	Undisputed	01/23/2026	1131726290	CMS
PFIZER INC.	$20.73	04/09/2024	Food and Beverage	Undisputed	01/23/2026	1131734404	CMS
PFIZER INC.	$19.06	05/09/2024	Food and Beverage	Undisputed	01/23/2026	1131323439	CMS
PFIZER INC.	$17.66	05/14/2024	Food and Beverage	Undisputed	01/23/2026	1131726386	CMS
PFIZER INC.	$26.38	06/12/2024	Food and Beverage	Undisputed	01/23/2026	1131325628	CMS
PFIZER INC.	$17.64	07/17/2024	Food and Beverage	Undisputed	01/23/2026	1131336052	CMS
PFIZER INC.	$20.97	07/19/2024	Food and Beverage	Undisputed	01/23/2026	1131336056	CMS
PFIZER INC.	$19.73	08/14/2024	Food and Beverage	Undisputed	01/23/2026	1131339983	CMS
PFIZER INC.	$15.67	08/16/2024	Food and Beverage	Undisputed	01/23/2026	1131787499	CMS
PFIZER INC.	$14.34	08/28/2024	Food and Beverage	Undisputed	01/23/2026	1131347098	CMS
PFIZER INC.	$14.56	12/12/2024	Food and Beverage	Undisputed	01/23/2026	1131388186	CMS
PUMA BIOTECHNOLOGY, INC.	$25.53	05/21/2024	Food and Beverage	Undisputed	01/23/2026	1113849574	CMS
PUMA BIOTECHNOLOGY, INC.	$24.34	08/21/2024	Food and Beverage	Undisputed	01/23/2026	1113848175	CMS
PUMA BIOTECHNOLOGY, INC.	$25.04	12/04/2024	Food and Beverage	Undisputed	01/23/2026	1113863612	CMS
Regeneron Healthcare Solutions, Inc.	$33.58	04/02/2024	Food and Beverage	Undisputed	01/23/2026	1114036065	CMS
Rigel Pharmaceuticals, Inc.	$18.42	02/20/2024	Food and Beverage	Undisputed	01/23/2026	1145201544	CMS
Rigel Pharmaceuticals, Inc.	$32.33	11/21/2024	Food and Beverage	Undisputed	01/23/2026	1145206921	CMS
SOBI, INC	$18.78	10/17/2024	Food and Beverage	Undisputed	01/23/2026	1141411800	CMS
SpringWorks Therapeutics, Inc.	$28.63	02/14/2024	Food and Beverage	Undisputed	01/23/2026	1085803884	CMS
SpringWorks Therapeutics, Inc.	$16.33	05/13/2024	Food and Beverage	Undisputed	01/23/2026	1085803886	CMS
Stemline Therapeutics Inc.	$20.85	01/16/2024	Food and Beverage	Undisputed	01/23/2026	1142960443	CMS
Stemline Therapeutics Inc.	$20.67	11/18/2024	Food and Beverage	Undisputed	01/23/2026	1142960445	CMS
Sumitomo Pharma America, Inc.	$13.27	01/18/2024	Food and Beverage	Undisputed	01/23/2026	1148844681	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$29.13	01/09/2024	Food and Beverage	Undisputed	01/23/2026	1144956327	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$25.04	09/04/2024	Food and Beverage	Undisputed	01/23/2026	1144956329	CMS
TerSera Therapeutics LLC	$32.80	04/01/2024	Food and Beverage	Undisputed	01/23/2026	1144715469	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

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.