Dereje T. Siyum, MD
NPI 1164981007ActiveIndividual· Internal Medicine· Brookfield, WI
Internal Medicine (MD) with Aurora Medical Group, Inc., practicing in Brookfield, Wisconsin. Their prescriptions cost Medicare Part D more than their services did: $58,464 for 527 claims, against $36,909 paid for services in 2024. Lists Aurora Lakeland Medical Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1164981007 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 19, 2019 |
| Last updated in NPPES | Oct 6, 2026 |
| Certified by provider | Oct 6, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 74852-20 | WI |
| Hospitalist | 208M00000X | 74852-20 | WI |
| Internal Medicine, Bariatric Medicine | 207RB0002X | 74852-20 | WI |
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 (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 155 |
|---|---|
| Services billed | 452 across 13 procedure codes |
| Paid by Medicare | $36,909 |
Part D prescriptions in 2024
| Prescriptions (claims) | 527 · 664 30-day fills |
|---|---|
| Patients | 171 |
| Total drug cost | $58,464 |
| Generic share | 79% of claims |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Hospitalist |
| Telehealth | Offers telehealth |
Medical group
- Aurora Medical Group, Inc.Milwaukee, WI · 3,813 clinicians
Hospital affiliations
- Aurora Lakeland Medical CenterElkhorn, WI
- Aurora Medical Center - SummitSummit, WI
- Aurora Medical Center Bay AreaMarinette, WI
- Aurora Memorial Hospital BurlingtonBurlington, WI
- Aurora St Lukes Medical CenterMilwaukee, WI
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 48 internal medicine physicians in Brookfield · All internal medicine physicians in Wisconsin