IndustryPayments
Official source Data mirrored from Centers for Medicare & Medicaid Services Open Payments · General Payments · as published 2026-01-23 View official record Methodology

Covered recipient · General Payments record

WILLIAM YOW JUNG CHANG

Allopathic & Osteopathic Physicians Internal Medicine Critical Care Medicine

NPI
1003236688
CMS profile
7231559
Location
MONTEREY PARK, CA

General Payments · PY2019–2024

$4,852.10

  • Reported across 163 records
  • CMS publication 2026-01-23

Latest program year · PY2024

$1,940.64

65 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.

Related groups: Critical Care Medicine CA All categories

By nature of payment

PY2024 · sorted by reported total

Nature of paymentAmountRecords
Food and Beverage $1,940.64 65

By paying entity

PY2024 · sorted by reported total

Paying entityAmountRecords
GlaxoSmithKline, LLC. $434.61 13
Acerta Pharma LLC $367.76 8
Boehringer Ingelheim Pharmaceuticals, Inc. $225.97 8
Takeda Pharmaceuticals U.S.A., Inc. $209.73 10
Actelion Pharmaceuticals US, Inc. $173.22 3
ABIOMED $125.00 1
Electromed, Inc. $78.97 5
Mylan Specialty L.P. $68.24 4
Merck Sharp & Dohme Corporation $60.50 3
United Therapeutics Corporation $56.35 3
Regeneron Healthcare Solutions, Inc. $46.45 2
GENZYME CORPORATION $42.36 2
BAXTER HEALTHCARE $28.22 2
HARMONY BIOSCIENCES LLC $23.26 1

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2019 $132.60 2
PY2021 $494.70 17
PY2022 $1,045.34 39
PY2023 $1,238.82 40
PY2024 $1,940.64 65

Payment records · PY2024 (65)

Sorted by paying entity, then date · as published by CMS

Program year 2024 2019202120222023 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
ABIOMED $125.00 05/23/2024 Food and Beverage Undisputed 01/23/2026 1142286433 CMS
Actelion Pharmaceuticals US, Inc. $20.60 03/26/2024 Food and Beverage Undisputed 01/23/2026 1078870600 CMS
Actelion Pharmaceuticals US, Inc. $19.72 05/17/2024 Food and Beverage Undisputed 01/23/2026 1078870590 CMS
Actelion Pharmaceuticals US, Inc. $132.90 11/05/2024 Food and Beverage Undisputed 01/23/2026 1078870588 CMS
AstraZeneca Pharmaceuticals LP $25.76 02/08/2024 Food and Beverage Undisputed 01/23/2026 1105449751 CMS
AstraZeneca Pharmaceuticals LP $124.98 06/26/2024 Food and Beverage Undisputed 01/23/2026 1105727159 CMS
AstraZeneca Pharmaceuticals LP $21.31 08/06/2024 Food and Beverage Undisputed 01/23/2026 1105261499 CMS
AstraZeneca Pharmaceuticals LP $15.83 08/12/2024 Food and Beverage Undisputed 01/23/2026 1105802799 CMS
AstraZeneca Pharmaceuticals LP $125.00 08/21/2024 Food and Beverage Undisputed 01/23/2026 1104370439 CMS
AstraZeneca Pharmaceuticals LP $15.13 10/10/2024 Food and Beverage Undisputed 01/23/2026 1105832889 CMS
AstraZeneca Pharmaceuticals LP $19.14 10/23/2024 Food and Beverage Undisputed 01/23/2026 1104591372 CMS
AstraZeneca Pharmaceuticals LP $20.61 11/20/2024 Food and Beverage Undisputed 01/23/2026 1105393774 CMS
Baxter Healthcare $13.85 04/09/2024 Food and Beverage Undisputed 01/23/2026 1118295472 CMS
Baxter Healthcare $14.37 08/23/2024 Food and Beverage Undisputed 01/23/2026 1118295474 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $16.90 01/16/2024 Food and Beverage Undisputed 01/23/2026 1117831819 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $25.03 03/05/2024 Food and Beverage Undisputed 01/23/2026 1117831827 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $5.61 03/19/2024 Food and Beverage Undisputed 01/23/2026 1117831815 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $9.63 03/19/2024 Food and Beverage Undisputed 01/23/2026 1117831817 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $21.11 04/23/2024 Food and Beverage Undisputed 01/23/2026 1117831825 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $107.75 05/29/2024 Food and Beverage Undisputed 01/23/2026 1117831829 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $20.06 07/18/2024 Food and Beverage Undisputed 01/23/2026 1117831823 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $19.88 08/20/2024 Food and Beverage Undisputed 01/23/2026 1117831821 CMS
Electromed, Inc. $17.84 08/26/2024 Food and Beverage Undisputed 01/23/2026 1137883452 CMS
Electromed, Inc. $19.47 09/25/2024 Food and Beverage Undisputed 01/23/2026 1137883456 CMS
Electromed, Inc. $19.96 10/22/2024 Food and Beverage Undisputed 01/23/2026 1137883461 CMS
Electromed, Inc. $10.71 12/05/2024 Food and Beverage Undisputed 01/23/2026 1137883469 CMS
Electromed, Inc. $10.99 12/09/2024 Food and Beverage Undisputed 01/23/2026 1137883465 CMS
GENZYME CORPORATION $20.41 04/16/2024 Food and Beverage Undisputed 01/23/2026 1139985916 CMS
GENZYME CORPORATION $21.95 07/16/2024 Food and Beverage Undisputed 01/23/2026 1139985946 CMS
GlaxoSmithKline, LLC. $27.78 02/06/2024 Food and Beverage Undisputed 01/23/2026 1116110700 CMS
GlaxoSmithKline, LLC. $21.21 02/15/2024 Food and Beverage Undisputed 01/23/2026 1115901991 CMS
GlaxoSmithKline, LLC. $3.32 02/16/2024 Food and Beverage Undisputed 01/23/2026 1116238588 CMS
GlaxoSmithKline, LLC. $27.68 03/18/2024 Food and Beverage Undisputed 01/23/2026 1116381398 CMS
GlaxoSmithKline, LLC. $33.34 05/30/2024 Food and Beverage Undisputed 01/23/2026 1115739505 CMS
GlaxoSmithKline, LLC. $34.98 07/10/2024 Food and Beverage Undisputed 01/23/2026 1115969658 CMS
GlaxoSmithKline, LLC. $28.63 08/05/2024 Food and Beverage Undisputed 01/23/2026 1116507657 CMS
GlaxoSmithKline, LLC. $3.46 08/23/2024 Food and Beverage Undisputed 01/23/2026 1115841668 CMS
GlaxoSmithKline, LLC. $30.77 09/18/2024 Food and Beverage Undisputed 01/23/2026 1116627016 CMS
GlaxoSmithKline, LLC. $125.00 09/25/2024 Food and Beverage Undisputed 01/23/2026 1116573045 CMS
GlaxoSmithKline, LLC. $30.39 10/29/2024 Food and Beverage Undisputed 01/23/2026 1116469520 CMS
GlaxoSmithKline, LLC. $34.27 11/25/2024 Food and Beverage Undisputed 01/23/2026 1116543984 CMS
GlaxoSmithKline, LLC. $33.78 12/05/2024 Food and Beverage Undisputed 01/23/2026 1116675987 CMS
HARMONY BIOSCIENCES LLC $23.26 08/06/2024 Food and Beverage Undisputed 01/23/2026 1126057993 CMS
Merck Sharp & Dohme LLC $16.52 01/17/2024 Food and Beverage Undisputed 01/23/2026 1141861542 CMS
Merck Sharp & Dohme LLC $22.40 07/02/2024 Food and Beverage Undisputed 01/23/2026 1141957079 CMS
Merck Sharp & Dohme LLC $21.58 12/10/2024 Food and Beverage Undisputed 01/23/2026 1141677399 CMS
Mylan Specialty L.P. $14.98 03/12/2024 Food and Beverage Undisputed 01/23/2026 1147338084 CMS
Mylan Specialty L.P. $15.12 06/17/2024 Food and Beverage Undisputed 01/23/2026 1147287820 CMS
Mylan Specialty L.P. $18.82 09/09/2024 Food and Beverage Undisputed 01/23/2026 1147296117 CMS
Mylan Specialty L.P. $19.32 11/15/2024 Food and Beverage Undisputed 01/23/2026 1147330498 CMS
Regeneron Healthcare Solutions, Inc. $26.69 09/06/2024 Food and Beverage Undisputed 01/23/2026 1114021944 CMS
Regeneron Healthcare Solutions, Inc. $19.76 10/15/2024 Food and Beverage Undisputed 01/23/2026 1114021946 CMS
Takeda Pharmaceuticals U.S.A., Inc. $27.86 01/26/2024 Food and Beverage Undisputed 01/23/2026 1137507671 CMS
Takeda Pharmaceuticals U.S.A., Inc. $29.45 03/15/2024 Food and Beverage Undisputed 01/23/2026 1137507675 CMS
Takeda Pharmaceuticals U.S.A., Inc. $0.73 04/30/2024 Food and Beverage Undisputed 01/23/2026 1137507679 CMS
Takeda Pharmaceuticals U.S.A., Inc. $26.88 04/30/2024 Food and Beverage Undisputed 01/23/2026 1137507682 CMS
Takeda Pharmaceuticals U.S.A., Inc. $35.17 06/28/2024 Food and Beverage Undisputed 01/23/2026 1137507686 CMS
Takeda Pharmaceuticals U.S.A., Inc. $3.36 09/06/2024 Food and Beverage Undisputed 01/23/2026 1137507690 CMS
Takeda Pharmaceuticals U.S.A., Inc. $20.72 09/06/2024 Food and Beverage Undisputed 01/23/2026 1137507694 CMS
Takeda Pharmaceuticals U.S.A., Inc. $21.78 10/16/2024 Food and Beverage Undisputed 01/23/2026 1137507698 CMS
Takeda Pharmaceuticals U.S.A., Inc. $23.74 10/25/2024 Food and Beverage Undisputed 01/23/2026 1137507702 CMS
Takeda Pharmaceuticals U.S.A., Inc. $20.04 11/26/2024 Food and Beverage Undisputed 01/23/2026 1137507705 CMS
United Therapeutics Corporation $16.19 02/07/2024 Food and Beverage Undisputed 01/23/2026 1149464096 CMS
United Therapeutics Corporation $15.69 05/14/2024 Food and Beverage Undisputed 01/23/2026 1149449806 CMS
United Therapeutics Corporation $24.47 07/12/2024 Food and Beverage Undisputed 01/23/2026 1149455236 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
2019, 2021, 2022, 2023, 2024
Source files
Dataset page · Bulk file · PY2019 , 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.

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