DAVID J KNYSAK (MD) – Allergy & Immunology Physician, NPI 1609876101
Allergy & Immunology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
220 ALLERGY/IMMUNOLOGY in IL
Provider Addresses for DAVID J KNYSAK (MD)
360 W BUTTERFIELD RD STE 140
ELMHURST, IL 601265025
Phone: (630) 574-0460
Fax: (630) 574-0470
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 95 Open Payments records for all available years, with a total value of $1,841.
Total Amount is formed as General ($1,841) + Research ($0) + Ownership ($0) = $1,841.
Last reported payment date: 2024-12-17 • Largest payer in this snapshot: GlaxoSmithKline, LLC. ($475).
Total Amount
$1,841
General + Research + Ownership
Payments
95
Total payment records
General Amount
$1,841
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-17
Latest reported date
Top Companies
Largest payers in this snapshot
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2010-06-18
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20100618000826 | I | Allergy/Immunology | IL | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 95165 | Professional service for preparation and provision of 1 or more antigens | 1,500 | 65 | $0 |
| 95117 | Professional service for multiple injections of allergen | 830 | 127 | $0 |
| 95004 | Test for allergy using allergenic extract | 728 | 19 | $0 |
| 95115 | Professional service for single injection of allergen | 251 | 39 | $0 |
| 95024 | Test for allergy using allergenic extract injected into skin | 121 | 15 | $0 |
Insurance plans in this area (ZIP 60126)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| ALLERGY/IMMUNOLOGY | IL | 95117 | Injection of incremental dosages of allergen, 2 or more injections | 710 | 132 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Allergy/Immunology, Internal Medicine | IL | |
| Allergy/Immunology, Pediatric Medicine | MO |
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