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

NAI-LUN CHANG

Allopathic & Osteopathic Physicians Internal Medicine Cardiovascular Disease

NPI
1639425689
CMS profile
1369975
Location
BROOKLYN, NY

General Payments · PY2018–2024

$10,995.53

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

Latest program year · PY2024

$354.32

6 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 $354.32 6

By paying entity

PY2024 · sorted by reported total

Paying entityAmountRecords
Esperion Therapeutics, Inc. $174.02 3
Abbott Laboratories $148.12 1
Kiniksa Pharmaceuticals International, plc $32.18 2

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2018 $1,337.61 28
PY2019 $2,893.09 27
PY2020 $619.96 10
PY2021 $2,437.46 23
PY2022 $2,120.43 26
PY2023 $1,232.66 12
PY2024 $354.32 6

Payment records · PY2024 (6)

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
Abbott Laboratories $148.12 08/21/2024 Food and Beverage Undisputed 01/23/2026 1125165544 CMS
Esperion Therapeutics, Inc. $19.80 02/27/2024 Food and Beverage Undisputed 01/23/2026 1129430674 CMS
Esperion Therapeutics, Inc. $29.22 04/09/2024 Food and Beverage Undisputed 01/23/2026 1129430676 CMS
Esperion Therapeutics, Inc. $125.00 06/18/2024 Food and Beverage Undisputed 01/23/2026 1129430678 CMS
Kiniksa Pharmaceuticals International, plc $16.09 01/18/2024 Food and Beverage Undisputed 01/23/2026 1154896418 CMS
Kiniksa Pharmaceuticals International, plc $16.09 01/18/2024 Food and Beverage Undisputed 01/23/2026 1154896540 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.