# David J Knysak, MD

Source: https://ourhealthnetwork.com/doctor/david-knysak-md-1609876101
NPI: 1609876101
Data source: CMS NPI Registry (DAC), refreshed monthly

## Quick facts

David J Knysak, MD is a allergy/immunology based in Elmhurst, IL practicing at Oak Brook Allergists Sc with NPI 1609876101.

## Profile

- Primary specialty: Allergy/Immunology
- Credential: MD
- Gender: Male
- Medical school: NORTHWESTERN UNIVERSITY FEINBERG MEDICAL SCHOOL
- Graduation year: 1982
- NPI: 1609876101 ([NPPES record](https://npiregistry.cms.hhs.gov/provider-view/1609876101))

## Practice and contact

- Practice name: Oak Brook Allergists Sc
- Address: 360 W Butterfield Rd, Suite 140, Elmhurst, IL, 601265025
- Phone: (630) 574-0460
- Group practice size: 3 members

## Insurance accepted (6 networks)

This provider is in network with the following insurance carriers, based on federal Transparency in Coverage filings and FHIR provider directories:

- [HCSC: BCBS Illinois](https://ourhealthnetwork.com/insurance/hcsc-bcbs-illinois) — 109 plans
- [Cigna](https://ourhealthnetwork.com/insurance/cigna) — 18 plans
- [Humana](https://ourhealthnetwork.com/insurance/humana) — 9 plans
- [Aetna](https://ourhealthnetwork.com/insurance/aetna) — 7 plans
- [Medicare](https://ourhealthnetwork.com/insurance/medicare) — 1 plan
- [UMR](https://ourhealthnetwork.com/insurance/umr) — 1 plan

To verify a specific plan covers David J Knysak, use the [OurHealthNetwork Insurance Matcher](https://ourhealthnetwork.com/tools/insurance-matcher?npis=1609876101).

## Industry payments disclosure (CMS Open Payments)

Per CMS Open Payments data (most recent year 2024), this provider has received 43 disclosed payments from medical industry sources totaling approximately $904.

Largest disclosed payer: AstraZeneca Pharmaceuticals LP ($202 cumulative).

Source: CMS Open Payments program (federal financial-transparency dataset). Industry payment disclosures do not imply any wrongdoing; many are legitimate consulting fees, research support, or speaker honoraria.

## Related on OurHealthNetwork

- [More Allergy/Immunology doctors in ELMHURST, IL](https://ourhealthnetwork.com/allergy-immunology/il/elmhurst)
- [Find insurance plans that cover this doctor](https://ourhealthnetwork.com/tools/insurance-matcher?npis=1609876101)
- [Browse all 5.5M US healthcare providers](https://ourhealthnetwork.com/find-doctors)
- [About our data and methodology](https://ourhealthnetwork.com/methodology)