Covered recipient · General Payments record

WILLIAM WEI-MING CHANG

Allopathic & Osteopathic Physicians Internal Medicine Pulmonary Disease

NPI: 1417902149
CMS profile: 245292
Location: SAN JUAN CAPISTRANO, CA

General Payments · PY2018–2024

$14,415.79

Reported across 745 records
CMS publication 2026-01-23

Latest program year · PY2024

$2,040.08

92 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	$2,040.08	92

By paying entity

PY2024 · sorted by reported total

Paying entity	Amount	Records
GlaxoSmithKline, LLC.	$534.56	38
Acerta Pharma LLC	$302.21	10
United Therapeutics Corporation	$298.39	5
Relypsa, Inc.	$112.74	5
Boehringer Ingelheim Pharmaceuticals, Inc.	$107.61	4
Insmed, Inc.	$103.18	5
Avadel CNS Pharmaceuticals, LLC	$91.25	4
GENZYME CORPORATION	$81.45	4
PFIZER INC.	$63.97	3
Grifols USA, LLC	$63.04	2
Axsome Therapeutics, Inc.	$53.12	2
Mylan Specialty L.P.	$51.63	2
Exact Sciences Corporation	$29.37	1
HARMONY BIOSCIENCES LLC	$29.29	1
Regeneron Healthcare Solutions, Inc.	$26.28	1
JAZZ PHARMACEUTICALS INC.	$22.73	1
Electromed, Inc.	$20.35	1
Lilly USA, LLC	$17.67	1
CMP Pharma, Inc.	$16.61	1
Pulmonx Corporation	$14.63	1

By program year

All program years on this page · sorted by year

Program year	Amount	Records
PY2018	$2,490.72	142
PY2019	$3,253.87	177
PY2020	$910.42	46
PY2021	$1,771.11	86
PY2022	$1,574.53	84
PY2023	$2,375.06	118
PY2024	$2,040.08	92

Payment records · PY2024 (92)

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	$20.00	01/31/2024	Food and Beverage	Undisputed	01/23/2026	1104361583	CMS
AstraZeneca Pharmaceuticals LP	$113.03	01/31/2024	Food and Beverage	Undisputed	01/23/2026	1104424599	CMS
AstraZeneca Pharmaceuticals LP	$27.27	02/20/2024	Food and Beverage	Undisputed	01/23/2026	1105807444	CMS
AstraZeneca Pharmaceuticals LP	$15.83	05/31/2024	Food and Beverage	Undisputed	01/23/2026	1104348928	CMS
AstraZeneca Pharmaceuticals LP	$19.29	06/11/2024	Food and Beverage	Undisputed	01/23/2026	1105505900	CMS
AstraZeneca Pharmaceuticals LP	$23.64	08/24/2024	Food and Beverage	Undisputed	01/23/2026	1104364749	CMS
AstraZeneca Pharmaceuticals LP	$22.65	09/27/2024	Food and Beverage	Undisputed	01/23/2026	1104751498	CMS
AstraZeneca Pharmaceuticals LP	$18.51	11/12/2024	Food and Beverage	Undisputed	01/23/2026	1104713779	CMS
AstraZeneca Pharmaceuticals LP	$18.24	11/19/2024	Food and Beverage	Undisputed	01/23/2026	1105655804	CMS
AstraZeneca Pharmaceuticals LP	$23.75	12/07/2024	Food and Beverage	Undisputed	01/23/2026	1105729191	CMS
Avadel CNS Pharmaceuticals, LLC	$16.48	01/17/2024	Food and Beverage	Undisputed	01/23/2026	1123379872	CMS
Avadel CNS Pharmaceuticals, LLC	$29.56	03/13/2024	Food and Beverage	Undisputed	01/23/2026	1123379874	CMS
Avadel CNS Pharmaceuticals, LLC	$24.94	06/12/2024	Food and Beverage	Undisputed	01/23/2026	1123379876	CMS
Avadel CNS Pharmaceuticals, LLC	$20.27	08/14/2024	Food and Beverage	Undisputed	01/23/2026	1123379878	CMS
Axsome Therapeutics, Inc.	$22.15	06/25/2024	Food and Beverage	Undisputed	01/23/2026	1148328183	CMS
Axsome Therapeutics, Inc.	$30.97	08/26/2024	Food and Beverage	Undisputed	01/23/2026	1148328185	CMS
Boehringer Ingelheim Pharmaceuticals, Inc.	$22.71	03/01/2024	Food and Beverage	Undisputed	01/23/2026	1118001625	CMS
Boehringer Ingelheim Pharmaceuticals, Inc.	$23.22	03/20/2024	Food and Beverage	Undisputed	01/23/2026	1118001627	CMS
Boehringer Ingelheim Pharmaceuticals, Inc.	$31.65	10/08/2024	Food and Beverage	Undisputed	01/23/2026	1118001631	CMS
Boehringer Ingelheim Pharmaceuticals, Inc.	$30.03	12/04/2024	Food and Beverage	Undisputed	01/23/2026	1118001629	CMS
CMP Pharma, Inc.	$16.61	03/09/2024	Food and Beverage	Undisputed	01/23/2026	1094608500	CMS
Electromed, Inc.	$20.35	11/13/2024	Food and Beverage	Undisputed	01/23/2026	1137883447	CMS
Exact Sciences Corporation	$29.37	04/11/2024	Food and Beverage	Undisputed	01/23/2026	1114612405	CMS
GENZYME CORPORATION	$15.42	02/16/2024	Food and Beverage	Undisputed	01/23/2026	1139731390	CMS
GENZYME CORPORATION	$16.09	03/26/2024	Food and Beverage	Undisputed	01/23/2026	1139731408	CMS
GENZYME CORPORATION	$23.20	06/07/2024	Food and Beverage	Undisputed	01/23/2026	1139731426	CMS
GENZYME CORPORATION	$26.74	07/16/2024	Food and Beverage	Undisputed	01/23/2026	1139731452	CMS
GlaxoSmithKline, LLC.	$1.42	01/17/2024	Food and Beverage	Undisputed	01/23/2026	1115911535	CMS
GlaxoSmithKline, LLC.	$9.51	01/17/2024	Food and Beverage	Undisputed	01/23/2026	1115921704	CMS
GlaxoSmithKline, LLC.	$29.96	01/23/2024	Food and Beverage	Undisputed	01/23/2026	1115966357	CMS
GlaxoSmithKline, LLC.	$10.39	01/25/2024	Food and Beverage	Undisputed	01/23/2026	1115893392	CMS
GlaxoSmithKline, LLC.	$7.13	02/29/2024	Food and Beverage	Undisputed	01/23/2026	1115930105	CMS
GlaxoSmithKline, LLC.	$5.70	02/29/2024	Food and Beverage	Undisputed	01/23/2026	1116665369	CMS
GlaxoSmithKline, LLC.	$25.23	03/06/2024	Food and Beverage	Undisputed	01/23/2026	1116368692	CMS
GlaxoSmithKline, LLC.	$12.90	03/06/2024	Food and Beverage	Undisputed	01/23/2026	1116441445	CMS
GlaxoSmithKline, LLC.	$6.41	03/20/2024	Food and Beverage	Undisputed	01/23/2026	1116543534	CMS
GlaxoSmithKline, LLC.	$12.37	03/28/2024	Food and Beverage	Undisputed	01/23/2026	1116497370	CMS
GlaxoSmithKline, LLC.	$11.78	04/01/2024	Food and Beverage	Undisputed	01/23/2026	1116510695	CMS
GlaxoSmithKline, LLC.	$10.89	04/25/2024	Food and Beverage	Undisputed	01/23/2026	1116055398	CMS
GlaxoSmithKline, LLC.	$2.20	04/26/2024	Food and Beverage	Undisputed	01/23/2026	1116496714	CMS
GlaxoSmithKline, LLC.	$31.32	04/26/2024	Food and Beverage	Undisputed	01/23/2026	1116666365	CMS
GlaxoSmithKline, LLC.	$26.00	05/07/2024	Food and Beverage	Undisputed	01/23/2026	1116203364	CMS
GlaxoSmithKline, LLC.	$2.43	05/07/2024	Food and Beverage	Undisputed	01/23/2026	1116303117	CMS
GlaxoSmithKline, LLC.	$31.94	05/28/2024	Food and Beverage	Undisputed	01/23/2026	1116231327	CMS
GlaxoSmithKline, LLC.	$22.29	05/29/2024	Food and Beverage	Undisputed	01/23/2026	1115767171	CMS
GlaxoSmithKline, LLC.	$22.48	06/05/2024	Food and Beverage	Undisputed	01/23/2026	1116716767	CMS
GlaxoSmithKline, LLC.	$11.49	06/17/2024	Food and Beverage	Undisputed	01/23/2026	1115940727	CMS
GlaxoSmithKline, LLC.	$25.14	06/21/2024	Food and Beverage	Undisputed	01/23/2026	1116034528	CMS
GlaxoSmithKline, LLC.	$14.58	06/28/2024	Food and Beverage	Undisputed	01/23/2026	1116508409	CMS
GlaxoSmithKline, LLC.	$1.98	07/17/2024	Food and Beverage	Undisputed	01/23/2026	1115843558	CMS
GlaxoSmithKline, LLC.	$11.92	07/17/2024	Food and Beverage	Undisputed	01/23/2026	1116389616	CMS
GlaxoSmithKline, LLC.	$10.62	08/01/2024	Food and Beverage	Undisputed	01/23/2026	1116711337	CMS
GlaxoSmithKline, LLC.	$9.88	08/22/2024	Food and Beverage	Undisputed	01/23/2026	1116236216	CMS
GlaxoSmithKline, LLC.	$6.67	09/06/2024	Food and Beverage	Undisputed	01/23/2026	1116513175	CMS
GlaxoSmithKline, LLC.	$12.86	09/19/2024	Food and Beverage	Undisputed	01/23/2026	1115934035	CMS
GlaxoSmithKline, LLC.	$7.96	09/26/2024	Food and Beverage	Undisputed	01/23/2026	1116252904	CMS
GlaxoSmithKline, LLC.	$15.24	10/01/2024	Food and Beverage	Undisputed	01/23/2026	1116295773	CMS
GlaxoSmithKline, LLC.	$2.29	10/01/2024	Food and Beverage	Undisputed	01/23/2026	1116553055	CMS
GlaxoSmithKline, LLC.	$13.84	10/01/2024	Food and Beverage	Undisputed	01/23/2026	1116705340	CMS
GlaxoSmithKline, LLC.	$26.53	10/23/2024	Food and Beverage	Undisputed	01/23/2026	1116371847	CMS
GlaxoSmithKline, LLC.	$11.67	10/24/2024	Food and Beverage	Undisputed	01/23/2026	1116463549	CMS
GlaxoSmithKline, LLC.	$12.70	11/07/2024	Food and Beverage	Undisputed	01/23/2026	1116088159	CMS
GlaxoSmithKline, LLC.	$24.18	11/14/2024	Food and Beverage	Undisputed	01/23/2026	1116362651	CMS
GlaxoSmithKline, LLC.	$11.77	12/12/2024	Food and Beverage	Undisputed	01/23/2026	1116235588	CMS
GlaxoSmithKline, LLC.	$20.89	12/17/2024	Food and Beverage	Undisputed	01/23/2026	1116732740	CMS
Grifols USA, LLC	$31.50	03/12/2024	Food and Beverage	Undisputed	01/23/2026	1124724066	CMS
Grifols USA, LLC	$31.54	10/01/2024	Food and Beverage	Undisputed	01/23/2026	1124724068	CMS
Harmony Biosciences Llc	$29.29	10/31/2024	Food and Beverage	Undisputed	01/23/2026	1141477652	CMS
Insmed, Inc.	$31.82	01/20/2024	Food and Beverage	Undisputed	01/23/2026	1089575860	CMS
Insmed, Inc.	$18.20	03/06/2024	Food and Beverage	Undisputed	01/23/2026	1089578116	CMS
Insmed, Inc.	$17.75	10/21/2024	Food and Beverage	Undisputed	01/23/2026	1089562458	CMS
Insmed, Inc.	$16.26	11/25/2024	Food and Beverage	Undisputed	01/23/2026	1089572434	CMS
Insmed, Inc.	$19.15	12/11/2024	Food and Beverage	Undisputed	01/23/2026	1089557820	CMS
JAZZ PHARMACEUTICALS INC.	$22.73	04/16/2024	Food and Beverage	Undisputed	01/23/2026	1150213970	CMS
Lilly USA, LLC	$17.67	02/23/2024	Food and Beverage	Undisputed	01/23/2026	1135454737	CMS
Mylan Specialty L.P.	$27.29	05/09/2024	Food and Beverage	Undisputed	01/23/2026	1147374850	CMS
Mylan Specialty L.P.	$24.34	08/13/2024	Food and Beverage	Undisputed	01/23/2026	1147294879	CMS
PFIZER INC.	$15.08	08/20/2024	Food and Beverage	Undisputed	01/23/2026	1131852147	CMS
PFIZER INC.	$22.51	11/19/2024	Food and Beverage	Undisputed	01/23/2026	1131170553	CMS
PFIZER INC.	$26.38	11/20/2024	Food and Beverage	Undisputed	01/23/2026	1131123852	CMS
Pulmonx Corporation	$14.63	10/29/2024	Food and Beverage	Undisputed	01/23/2026	1087846420	CMS
Regeneron Healthcare Solutions, Inc.	$26.28	05/02/2024	Food and Beverage	Undisputed	01/23/2026	1114021948	CMS
United Therapeutics Corporation	$21.91	05/07/2024	Food and Beverage	Undisputed	01/23/2026	1149468408	CMS
United Therapeutics Corporation	$18.49	07/17/2024	Food and Beverage	Undisputed	01/23/2026	1149470166	CMS
United Therapeutics Corporation	$117.13	08/28/2024	Food and Beverage	Undisputed	01/23/2026	1149458562	CMS
United Therapeutics Corporation	$117.13	09/26/2024	Food and Beverage	Undisputed	01/23/2026	1149461126	CMS
United Therapeutics Corporation	$23.73	10/22/2024	Food and Beverage	Undisputed	01/23/2026	1149472508	CMS
Vifor Pharma, Inc.	$23.95	06/10/2024	Food and Beverage	Undisputed	01/23/2026	1124054477	CMS
Vifor Pharma, Inc.	$19.52	08/07/2024	Food and Beverage	Undisputed	01/23/2026	1124049790	CMS
Vifor Pharma, Inc.	$21.50	09/24/2024	Food and Beverage	Undisputed	01/23/2026	1124065922	CMS
Vifor Pharma, Inc.	$20.10	10/15/2024	Food and Beverage	Undisputed	01/23/2026	1124061708	CMS
Vifor Pharma, Inc.	$27.67	11/26/2024	Food and Beverage	Undisputed	01/23/2026	1124064677	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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