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

PATRICK C CHANG

Allopathic & Osteopathic Physicians Family Medicine

NPI
1912009705
CMS profile
313536
Location
ROCHESTER, MI

General Payments · PY2018–2024

$5,213.56

  • Reported across 132 records
  • CMS publication 2026-01-23

Latest program year · PY2024

$631.60

17 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 paymentAmountRecords
Food and Beverage $631.60 17

By paying entity

PY2024 · sorted by reported total

Paying entityAmountRecords
Acerta Pharma LLC $313.17 11
GlaxoSmithKline, LLC. $267.65 3
Amgen Inc. $30.45 2
BOSTON SCIENTIFIC CORPORATION $20.33 1

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2018 $1,037.09 59
PY2019 $1,135.52 14
PY2020 $231.66 5
PY2021 $1,057.88 16
PY2022 $766.98 15
PY2023 $352.83 6
PY2024 $631.60 17

Payment records · PY2024 (17)

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

Program year 2024 201820192020202120222023 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
Amgen Inc. $16.92 08/12/2024 Food and Beverage Undisputed 01/23/2026 1117524247 CMS
Amgen Inc. $13.53 11/11/2024 Food and Beverage Undisputed 01/23/2026 1117524249 CMS
AstraZeneca Pharmaceuticals LP $24.91 01/30/2024 Food and Beverage Undisputed 01/23/2026 1105858032 CMS
AstraZeneca Pharmaceuticals LP $124.74 02/01/2024 Food and Beverage Undisputed 01/23/2026 1104616996 CMS
AstraZeneca Pharmaceuticals LP $13.50 04/23/2024 Food and Beverage Undisputed 01/23/2026 1104509680 CMS
AstraZeneca Pharmaceuticals LP $22.56 06/11/2024 Food and Beverage Undisputed 01/23/2026 1104304098 CMS
AstraZeneca Pharmaceuticals LP $19.09 07/25/2024 Food and Beverage Undisputed 01/23/2026 1104341632 CMS
AstraZeneca Pharmaceuticals LP $16.09 07/30/2024 Food and Beverage Undisputed 01/23/2026 1104592012 CMS
AstraZeneca Pharmaceuticals LP $23.97 08/13/2024 Food and Beverage Undisputed 01/23/2026 1104396011 CMS
AstraZeneca Pharmaceuticals LP $18.13 09/05/2024 Food and Beverage Undisputed 01/23/2026 1105339127 CMS
AstraZeneca Pharmaceuticals LP $15.55 09/23/2024 Food and Beverage Undisputed 01/23/2026 1105548337 CMS
AstraZeneca Pharmaceuticals LP $17.59 10/22/2024 Food and Beverage Undisputed 01/23/2026 1105288482 CMS
AstraZeneca Pharmaceuticals LP $17.04 12/03/2024 Food and Beverage Undisputed 01/23/2026 1104402725 CMS
Boston Scientific Corporation $20.33 04/30/2024 Food and Beverage Undisputed 01/23/2026 1092527856 CMS
GlaxoSmithKline, LLC. $121.36 05/16/2024 Food and Beverage Undisputed 01/23/2026 1116477656 CMS
GlaxoSmithKline, LLC. $120.17 08/15/2024 Food and Beverage Undisputed 01/23/2026 1116646887 CMS
GlaxoSmithKline, LLC. $26.12 09/06/2024 Food and Beverage Undisputed 01/23/2026 1116251776 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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