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

DONALD Y LEUNG

Allopathic & Osteopathic Physicians Allergy & Immunology

NPI
1215012950
CMS profile
1166460
Location
DENVER, CO

General Payments · PY2018–2024

$155,240.40

  • Reported across 93 records
  • CMS publication 2026-01-23

Latest program year · PY2024

$12,416.50

9 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
Consulting Fee $11,708.25 2
Travel and Lodging $588.60 2
Food and Beverage $119.65 5

By paying entity

PY2024 · sorted by reported total

Paying entityAmountRecords
GENZYME CORPORATION $12,318.57 5
Johnson & Johnson Vision Care, Inc. $69.07 3
Amgen Inc. $28.86 1

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2018 $24,552.61 14
PY2019 $11,975.35 13
PY2020 $17,535.00 10
PY2021 $13,870.40 14
PY2022 $10,627.39 12
PY2023 $64,263.15 21
PY2024 $12,416.50 9

Payment records · PY2024 (9)

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. $28.86 02/24/2024 Food and Beverage Undisputed 01/23/2026 1117610247 CMS
GENZYME CORPORATION $8,912.25 03/07/2024 Consulting Fee Undisputed 01/23/2026 1139680403 CMS
GENZYME CORPORATION $21.72 03/07/2024 Food and Beverage Undisputed 01/23/2026 1139680405 CMS
GENZYME CORPORATION $169.47 03/07/2024 Travel and Lodging Undisputed 01/23/2026 1139680407 CMS
GENZYME CORPORATION $419.13 03/07/2024 Travel and Lodging Undisputed 01/23/2026 1139680409 CMS
GENZYME CORPORATION $2,796.00 12/05/2024 Consulting Fee Undisputed 01/23/2026 1139680401 CMS
Johnson & Johnson Vision Care, Inc. $21.45 01/09/2024 Food and Beverage Undisputed 01/23/2026 1077693611 CMS
Johnson & Johnson Vision Care, Inc. $27.68 04/17/2024 Food and Beverage Undisputed 01/23/2026 1077693711 CMS
Johnson & Johnson Vision Care, Inc. $19.94 05/22/2024 Food and Beverage Undisputed 01/23/2026 1077693653 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.