Michael Edward Grzelak, M.D.
NPI 1386808913ActiveIndividual· Hospitalist· Winfield, IL
Hospitalist (M.D.) with Central Dupage Physician Group, practicing in Winfield, Illinois. In 2024 Medicare paid $83,965 for 429 patients, and Part D covered 172 of their prescriptions, 82% of them generic. Davol Inc. reported $162.14 in payments in 2025, mostly food and beverage. Lists Northwestern Medicine Central Dupage Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1386808913 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 14, 2008 |
| Last updated in NPPES | Jan 18, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Hospitalist Primary | 208M00000X | 036124898 | IL |
| Internal Medicine | 207R00000X | 036124898 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Hospitalist (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 429 |
|---|---|
| Services billed | 921 across 13 procedure codes |
| Paid by Medicare | $83,965 |
Part D prescriptions in 2024
| Prescriptions (claims) | 172 · 268 30-day fills |
|---|---|
| Patients | 98 |
| Total drug cost | $17,505 |
| Generic share | 82% of claims |
Education and affiliations
| Graduation year | 2007 |
|---|---|
| Medicare specialty | Hospitalist |
Medical group
- Central Dupage Physician GroupGeneva, IL · 1,080 clinicians
Hospital affiliations
- Northwestern Medicine Central Dupage HospitalWinfield, IL
- Valley West Community HospitalSandwich, IL
Industry payments (Open Payments)
- 2025$162.14 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Davol Inc. | $162.14 | 2 |
What the 2025 payments were for
- Food and Beverage$162.14 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 75 hospitalists in Winfield · All hospitalists in Illinois