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

DAVID J KNYSAK

Allopathic & Osteopathic Physicians Allergy & Immunology

NPI
1609876101
CMS profile
208276
Location
ELMHURST, IL

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 · PY2023 · Entire year

$937.92

52 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

PY2023 · entire year · sorted by reported total

Nature of paymentAmountRecords
Food and Beverage $937.92 52

By paying entity

PY2023 · entire year · sorted by reported total

Payment records · PY2023

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

General Payments · PY2023 · Physicians and non-physician practitioners · CMS publication 2026-06-30

52 matching records · $937.92 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 52 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 52.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
AstraZeneca Pharmaceuticals LP $16.2112/20/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261015655899 CMS
GlaxoSmithKline, LLC. $30.8712/18/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261002457981 CMS
Novartis Pharmaceuticals Corporation $19.1912/11/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026992110353 CMS
GlaxoSmithKline, LLC. $24.5511/27/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261002453249 CMS
GlaxoSmithKline, LLC. $31.2711/20/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261002460263 CMS
AstraZeneca Pharmaceuticals LP $17.7011/14/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261011940400 CMS
Novartis Pharmaceuticals Corporation $12.4511/13/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026992110349 CMS
GlaxoSmithKline, LLC. $20.1311/07/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261002457877 CMS
Novartis Pharmaceuticals Corporation $22.2410/31/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026992110345 CMS
Optinose US, Inc. $14.3010/23/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261035127403 CMS
GlaxoSmithKline, LLC. $31.8510/17/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261002458001 CMS
AstraZeneca Pharmaceuticals LP $15.5010/10/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261011252141 CMS
Optinose US, Inc. $11.4209/27/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261035127347 CMS
Regeneron Healthcare Solutions, Inc. $31.8009/19/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026999255477 CMS
Novartis Pharmaceuticals Corporation $21.4309/12/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026992110325 CMS
GlaxoSmithKline, LLC. $30.0309/11/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261002453215 CMS
GlaxoSmithKline, LLC. $26.3008/28/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261002453315 CMS
GlaxoSmithKline, LLC. $1.3508/28/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261002460295 CMS
Optinose US, Inc. $20.5008/28/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261035127239 CMS
Amgen Inc. $25.6408/21/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261019886523 CMS
AstraZeneca Pharmaceuticals LP $12.9808/15/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261014603723 CMS
Optinose US, Inc. $2.8808/15/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261035127337 CMS
PFIZER INC. $21.3908/14/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261050483777 CMS
GlaxoSmithKline, LLC. $6.7608/02/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261002460319 CMS
Regeneron Healthcare Solutions, Inc. $15.3608/01/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026999255473 CMS
Optinose US, Inc. $19.5207/25/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261035127233 CMS
kaleo, Inc. $18.5907/18/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261013025343 CMS
Optinose US, Inc. $18.2706/27/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261035127175 CMS
GlaxoSmithKline, LLC. $26.2406/26/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261002455429 CMS
Regeneron Healthcare Solutions, Inc. $31.5306/20/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026999255469 CMS
Optinose US, Inc. $2.5806/06/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261035127129 CMS
Novartis Pharmaceuticals Corporation $23.8005/23/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026992110321 CMS
Optinose US, Inc. $1.9605/23/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261035126979 CMS
PFIZER INC. $23.6305/22/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261050698269 CMS
AstraZeneca Pharmaceuticals LP $20.7605/09/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261011961291 CMS
GlaxoSmithKline, LLC. $6.6405/09/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261002460331 CMS
Novartis Pharmaceuticals Corporation $13.8305/08/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026992110309 CMS
Optinose US, Inc. $11.7105/01/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261035127061 CMS
Novartis Pharmaceuticals Corporation $16.7004/25/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026992110305 CMS
PFIZER INC. $20.1304/25/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261050390411 CMS
GlaxoSmithKline, LLC. $14.1204/18/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261002457923 CMS
Optinose US, Inc. $15.7604/11/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261035126911 CMS
Regeneron Healthcare Solutions, Inc. $20.6403/21/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026999255465 CMS
Novartis Pharmaceuticals Corporation $16.0803/07/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026992110317 CMS
GlaxoSmithKline, LLC. $8.8002/28/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261002458034 CMS
Optinose US, Inc. $22.8502/20/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261035126871 CMS
GlaxoSmithKline, LLC. $23.8402/13/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261002451121 CMS
GlaxoSmithKline, LLC. $3.1602/08/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261002453239 CMS
Optinose US, Inc. $8.0702/08/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261035126783 CMS
GENZYME CORPORATION $20.6901/31/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261049665975 CMS

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2019 $904.04 54
PY2020 $514.69 27
PY2021 $793.72 46
PY2022 $735.99 44
PY2023 $937.92 52
PY2024 $903.57 43
PY2025 $644.39 29

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
DAVID J KNYSAK, NPI 1609876101. IndustryPayments, data edition 2026-07-26T04:22:22Z. https://industrypayments.org/provider/npi-1609876101.
APA 7
IndustryPayments. (2026). DAVID J KNYSAK, NPI 1609876101 (Data edition 2026-07-26T04:22:22Z) [Data set]. https://industrypayments.org/provider/npi-1609876101
Bluebook
DAVID J KNYSAK, NPI 1609876101, IndustryPayments (data edition 2026-07-26T04:22:22Z), https://industrypayments.org/provider/npi-1609876101.

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