Official source Data mirrored from Centers for Medicare & Medicaid Services Open Payments · General Payments · CMS publication 2026-06-30 View official record

Covered recipient · General Payments record

LEON W KAO

Allopathic & Osteopathic Physicians Allergy & Immunology Allergy

NPI
1265639728
CMS profile
1054596
Location
GERMANTOWN, MD

A name match is not confirmation of identity. CMS publishes records for different people under similar names; the NPI, specialty, and location shown on this page are the CMS-published fields that distinguish them.

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General Payments · PY2022 · Entire year

$1,123.60

59 records · 0 disputed

Summary and payment records

  • CMS publication 2026-06-30
Read the payment records

“Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.”

— Centers for Medicare & Medicaid Services, Open Payments

A reported payment reflects a financial relationship a company disclosed. It does not indicate wrongdoing or a conflict of interest, and it says nothing about the quality of a provider's care.

These records are submitted to CMS and attested to by the reporting companies. CMS publishes them as reported; this site mirrors them without independent verification.

A payment attributed to a provider may have been made to a third party — a hospital, practice, or research institution — rather than paid to the provider personally.

How these totals are calculated
  • This total is the sum of the individual General Payments record amounts CMS published for the labeled program year(s); each record amount is used unmodified. The total itself is computed by this site. 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.
  • Methodology & Data — sourcing, labeling, and limitations.

Provider summaries generated . CMS updates this data on an annual cycle, and corrections or successful disputes made at CMS may not yet appear here. The official CMS record is authoritative for the current state. View the official CMS record ↗

By nature of payment

PY2022 · entire year · sorted by reported total

Nature of paymentAmountRecords
Food and Beverage $1,123.60 59

By paying entity

PY2022 · entire year · sorted by reported total

Payment records · PY2022

Ordering applied by this site (date, newest first, then paying entity) · record values are shown as CMS published them

General Payments · PY2022 · Physicians and non-physician practitioners · CMS publication 2026-06-30

59 matching records · $1,123.60 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 59 matching records (CSV)

CSV includes CMS record IDs, source and publication dates, the data edition, and a link to these filters. Formula-like text cells are prefixed with an apostrophe for spreadsheet safety.

Showing records 1–50 of 59.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
OptiNose US, Inc. $13.5212/08/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026928138025 CMS
GlaxoSmithKline, LLC. $24.3912/02/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026944760993 CMS
AstraZeneca Pharmaceuticals LP $24.1911/18/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026914864699 CMS
AstraZeneca Pharmaceuticals LP $18.2811/17/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026915645595 CMS
GlaxoSmithKline, LLC. $17.7311/10/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026944760997 CMS
BioCryst US Sales Co., LLC $21.2011/01/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026946876563 CMS
Regeneron Healthcare Solutions, Inc. $20.4910/13/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026927224265 CMS
GlaxoSmithKline, LLC. $22.8910/07/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026944761009 CMS
Regeneron Healthcare Solutions, Inc. $27.9510/06/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026927224261 CMS
LEO Pharma Inc. $13.5710/05/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026936234743 CMS
AstraZeneca Pharmaceuticals LP $17.8009/14/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026914794493 CMS
AstraZeneca Pharmaceuticals LP $4.3109/14/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026915055233 CMS
Incyte Corporation $22.1309/09/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026943010179 CMS
Novartis Pharmaceuticals Corporation $15.8909/08/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026893810763 CMS
GlaxoSmithKline, LLC. $13.6108/31/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026944761025 CMS
Aimmune Therapeutics, Inc. $24.2308/24/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026954227125 CMS
Regeneron Healthcare Solutions, Inc. $18.9508/11/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026927224257 CMS
Blueprint Medicines Corporation $18.3408/10/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026973598767 CMS
GlaxoSmithKline, LLC. $17.3408/05/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026944761001 CMS
GlaxoSmithKline, LLC. $19.8907/29/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026944761005 CMS
Amgen Inc. $18.0707/28/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026939337145 CMS
PFIZER INC. $15.0007/28/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026949247785 CMS
Regeneron Healthcare Solutions, Inc. $11.5707/27/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026927224251 CMS
Grifols USA, LLC $13.7007/13/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026918677143 CMS
AstraZeneca Pharmaceuticals LP $22.1007/08/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026915889353 CMS
Regeneron Healthcare Solutions, Inc. $20.8007/02/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026927224247 CMS
Incyte Corporation $22.8306/17/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026943010161 CMS
Novartis Pharmaceuticals Corporation $14.8606/15/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026893810759 CMS
AstraZeneca Pharmaceuticals LP $17.6006/10/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026915672505 CMS
GlaxoSmithKline, LLC. $21.9806/03/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026944761029 CMS
Aimmune Therapeutics, Inc. $21.1506/01/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026954227831 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $31.4405/25/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026887689727 CMS
Genentech USA, Inc. $15.1405/20/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026950771029 CMS
PFIZER INC. $24.6105/20/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026949626931 CMS
GlaxoSmithKline, LLC. $24.2905/13/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026944761017 CMS
Incyte Corporation $16.9305/11/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026943010147 CMS
Grifols USA, LLC $17.2005/04/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026918671139 CMS
Regeneron Healthcare Solutions, Inc. $21.0504/20/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026927224239 CMS
Phadia US Inc. $19.7104/16/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026869292683 CMS
Incyte Corporation $25.6604/08/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026943010135 CMS
AstraZeneca Pharmaceuticals LP $16.3204/06/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026914720479 CMS
Regeneron Healthcare Solutions, Inc. $5.5404/06/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026927224234 CMS
OptiNose US, Inc. $23.6104/01/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026928137859 CMS
AstraZeneca Pharmaceuticals LP $18.1803/31/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026914615429 CMS
AstraZeneca Pharmaceuticals LP $22.6103/26/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026914698567 CMS
Genentech USA, Inc. $21.9503/23/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026950790629 CMS
GlaxoSmithKline, LLC. $20.8203/18/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026944761021 CMS
GENZYME CORPORATION $16.8503/16/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026939005977 CMS
Takeda Pharmaceuticals U.S.A., Inc. $20.5003/11/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026955675769 CMS
GlaxoSmithKline, LLC. $14.7003/04/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026944761013 CMS

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2019 $588.51 30
PY2020 $637.18 39
PY2021 $828.46 49
PY2022 $1,123.60 59
PY2023 $1,168.99 55
PY2024 $1,689.30 64
PY2025 $1,657.11 66

Source & provenance

Dataset
CMS Open Payments — General Payments
Publisher of source data
Centers for Medicare & Medicaid Services
CMS publication date
2026-06-30
Program years on this page
2019, 2020, 2021, 2022, 2023, 2024, 2025
Source files and profile matching
Generated from
OP_DTL_GNRL_PGYR2025_P06302026_06032026.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.

Cite this record.

Plain
LEON W KAO, NPI 1265639728. IndustryPayments, data edition 2026-07-26T04:22:22Z. https://industrypayments.org/provider/npi-1265639728.
APA 7
IndustryPayments. (2026). LEON W KAO, NPI 1265639728 (Data edition 2026-07-26T04:22:22Z) [Data set]. https://industrypayments.org/provider/npi-1265639728
Bluebook
LEON W KAO, NPI 1265639728, IndustryPayments (data edition 2026-07-26T04:22:22Z), https://industrypayments.org/provider/npi-1265639728.

Source: Centers for Medicare & Medicaid Services, Open Payments.