Daniel Kniaz, M.D.
NPI 1841270147ActiveIndividual· Internal Medicine, Nephrology· Park Ridge, IL
Internal Medicine, Nephrology (M.D.) in Park Ridge, Illinois, trained at Medical College of Wisconsin (class of 1981). Their prescriptions cost Medicare Part D more than their services did: $362,923 for 2,678 claims, against $132,809 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 7 companies reporting payments in 2025, $248.40 in all, mostly food and beverage.
Overview
| NPI | 1841270147 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 20, 2006 |
| Last updated in NPPES | Nov 22, 2024 |
| Certified by provider | Nov 22, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 036073101 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nephrology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 493 |
|---|---|
| Services billed | 3,416 across 29 procedure codes |
| Paid by Medicare | $132,809 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,678 · 7,193 30-day fills |
|---|---|
| Patients | 297 |
| Total drug cost | $362,923 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | Medical College of Wisconsin |
|---|---|
| Graduation year | 1981 |
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
Hospital affiliations
- Northwest Community Hospital 1Arlington Heights, IL
- Northwestern Medicine Central Dupage HospitalWinfield, IL
Industry payments (Open Payments)
- 2025$248.40 · 9 payments from 7 companies
- 2024$141.62 · 7 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $60.65 | 2 |
| Vifor Pharma, Inc. | $49.72 | 2 |
| Novartis Pharmaceuticals Corporation | $33.27 | 1 |
| Travere Therapeutics, Inc. | $32.40 | 1 |
| Otsuka America Pharmaceutical, Inc. | $29.82 | 1 |
What the 2025 payments were for
- Food and Beverage$248.40 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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