William J. Giakas, M.D.
NPI 1821009127ActiveIndividual· Psychiatry & Neurology, Psychiatry· Rockford, IL
Psychiatry & Neurology, Psychiatry (M.D.) in Rockford, Illinois, licensed in IL, with an NPI issued in August 2006. In 2024 Medicare paid $139,805 for 61 patients, and Part D covered 873 of their prescriptions, 89% of them generic. Alkermes, Inc. reported $25.62 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1821009127 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Aug 11, 2006 |
| Last updated in NPPES | Sep 24, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Psychiatry Primary | 2084P0800X | 36083961 | 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 - Psychiatry (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 61 |
|---|---|
| Services billed | 1,187 across 14 procedure codes |
| Paid by Medicare | $139,805 |
Part D prescriptions in 2024
| Prescriptions (claims) | 873 · 1,382 30-day fills |
|---|---|
| Patients | 87 |
| Total drug cost | $179,031 |
| Generic share | 89% of claims |
Industry payments (Open Payments)
- 2025$25.62 · 1 payment from 1 company
- 2024$31.60 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alkermes, Inc. | $25.62 | 1 |
What the 2025 payments were for
- Food and Beverage$25.62 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 31 psychiatrists in Rockford · All psychiatrists in Illinois