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

DAVID J LEUNG

Allopathic & Osteopathic Physicians Internal Medicine Gastroenterology

NPI
1215469127
CMS profile
11304264
Location
ANN ARBOR, MI

General Payments · PY2021–2024

$6,922.77

  • Reported across 139 records
  • CMS publication 2026-01-23

Latest program year · PY2024

$3,932.81

38 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
Travel and Lodging $2,360.42 9
Food and Beverage $1,572.39 29

By paying entity

PY2024 · sorted by reported total

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2021 $545.60 17
PY2022 $1,039.39 40
PY2023 $1,404.97 44
PY2024 $3,932.81 38

Payment records · PY2024 (38)

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

Program year 2024 202120222023 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. $13.02 01/10/2024 Food and Beverage Undisputed 01/23/2026 1104164762 CMS
ABBVIE INC. $19.11 02/21/2024 Food and Beverage Undisputed 01/23/2026 1104164764 CMS
ABBVIE INC. $18.73 03/14/2024 Food and Beverage Undisputed 01/23/2026 1104164766 CMS
ABBVIE INC. $14.81 04/02/2024 Food and Beverage Undisputed 01/23/2026 1104164768 CMS
ABBVIE INC. $15.69 04/10/2024 Food and Beverage Undisputed 01/23/2026 1104164770 CMS
ABBVIE INC. $126.76 04/26/2024 Food and Beverage Undisputed 01/23/2026 1104164772 CMS
ABBVIE INC. $18.78 05/16/2024 Food and Beverage Undisputed 01/23/2026 1104164774 CMS
ABBVIE INC. $18.45 05/29/2024 Food and Beverage Undisputed 01/23/2026 1104164776 CMS
ABBVIE INC. $18.13 07/24/2024 Food and Beverage Undisputed 01/23/2026 1104164778 CMS
ABBVIE INC. $15.98 08/08/2024 Food and Beverage Undisputed 01/23/2026 1104164780 CMS
ABBVIE INC. $14.69 09/11/2024 Food and Beverage Undisputed 01/23/2026 1104164782 CMS
Boston Scientific Corporation $183.15 08/15/2024 Travel and Lodging Undisputed 01/23/2026 1092521707 CMS
Boston Scientific Corporation $668.49 08/15/2024 Travel and Lodging Undisputed 01/23/2026 1092521725 CMS
Boston Scientific Corporation $80.44 08/16/2024 Food and Beverage Undisputed 01/23/2026 1092521701 CMS
Boston Scientific Corporation $103.84 08/16/2024 Food and Beverage Undisputed 01/23/2026 1092521703 CMS
Boston Scientific Corporation $126.91 08/16/2024 Travel and Lodging Undisputed 01/23/2026 1092521705 CMS
Boston Scientific Corporation $183.15 08/16/2024 Travel and Lodging Undisputed 01/23/2026 1092521709 CMS
Boston Scientific Corporation $54.46 08/17/2024 Travel and Lodging Undisputed 01/23/2026 1092521697 CMS
Boston Scientific Corporation $79.90 08/17/2024 Food and Beverage Undisputed 01/23/2026 1092521699 CMS
Boston Scientific Corporation $306.75 10/10/2024 Travel and Lodging Undisputed 01/23/2026 1092521719 CMS
Boston Scientific Corporation $500.50 10/10/2024 Travel and Lodging Undisputed 01/23/2026 1092521723 CMS
Boston Scientific Corporation $183.27 10/11/2024 Food and Beverage Undisputed 01/23/2026 1092521711 CMS
Boston Scientific Corporation $261.61 10/11/2024 Food and Beverage Undisputed 01/23/2026 1092521717 CMS
Boston Scientific Corporation $306.75 10/11/2024 Travel and Lodging Undisputed 01/23/2026 1092521721 CMS
Boston Scientific Corporation $30.26 10/12/2024 Travel and Lodging Undisputed 01/23/2026 1092521695 CMS
Boston Scientific Corporation $226.77 10/12/2024 Food and Beverage Undisputed 01/23/2026 1092521713 CMS
IRONWOOD PHARMACEUTICALS, INC $16.92 02/28/2024 Food and Beverage Undisputed 01/23/2026 1153732672 CMS
Janssen Biotech, Inc. $18.83 02/23/2024 Food and Beverage Undisputed 01/23/2026 1078736687 CMS
Janssen Biotech, Inc. $17.95 04/30/2024 Food and Beverage Undisputed 01/23/2026 1078736603 CMS
Merck Sharp & Dohme LLC $18.35 04/12/2024 Food and Beverage Undisputed 01/23/2026 1141574980 CMS
RedHill Biopharma Inc. $16.26 04/18/2024 Food and Beverage Undisputed 01/23/2026 1095476701 CMS
Regeneron Healthcare Solutions, Inc. $123.98 01/19/2024 Food and Beverage Undisputed 01/23/2026 1114099390 CMS
Regeneron Healthcare Solutions, Inc. $27.50 04/04/2024 Food and Beverage Undisputed 01/23/2026 1114099392 CMS
Regeneron Healthcare Solutions, Inc. $23.95 05/03/2024 Food and Beverage Undisputed 01/23/2026 1114099394 CMS
Regeneron Healthcare Solutions, Inc. $25.49 05/10/2024 Food and Beverage Undisputed 01/23/2026 1114099396 CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC $14.73 04/08/2024 Food and Beverage Undisputed 01/23/2026 1153591806 CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC $17.39 06/19/2024 Food and Beverage Undisputed 01/23/2026 1153545969 CMS
Takeda Pharmaceuticals U.S.A., Inc. $21.06 04/15/2024 Food and Beverage Undisputed 01/23/2026 1137618475 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
2021, 2022, 2023, 2024
Source files
Dataset page · Bulk file · PY2021 , PY2022 , PY2023 , PY2024
Generated from
OP_DTL_GNRL_PGYR2024_P01232026_01102026.csv

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