Robert E. Williams, MD
NPI 1619909868ActiveIndividual· Internal Medicine· New Berlin, WI
Internal Medicine (MD) in New Berlin, Wisconsin, trained at Northeastern Ohio University College of Medicine (class of 1997). Their prescriptions cost Medicare Part D more than their services did: $380,263 for 4,092 claims, against $27,912 paid for services in 2024.
Overview
| NPI | 1619909868 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 7, 2006 |
| Last updated in NPPES | Nov 23, 2021 |
| Certified by provider | Nov 23, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 43644 | WI |
| Pediatrics | 208000000X | 43644 | 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 - Internal Medicine (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 121 |
|---|---|
| Services billed | 638 across 27 procedure codes |
| Paid by Medicare | $27,912 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,092 · 9,794 30-day fills |
|---|---|
| Patients | 312 |
| Total drug cost | $380,263 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | Northeastern Ohio University College of Medicine |
|---|---|
| Graduation year | 1997 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Pediatric Medicine |
Medical group
- Aurora Advanced Healthcare, Inc.Milwaukee, WI · 1,124 clinicians
Hospital affiliation
- Aurora St Lukes Medical CenterMilwaukee, WI
Other facilities
- Aurora at HomeHome health agency · Milwaukee, 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 19 internal medicine physicians in New Berlin · All internal medicine physicians in Wisconsin