William Lawrence Nelson, MD
NPI 1326051640ActiveIndividual· Internal Medicine· Elgin, IL
Internal Medicine (MD) in Elgin, Illinois, trained at University of Chicago, Pritzker School of Medicine (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $266,003 for 3,236 claims, against $73,663 paid for services in 2024.
Overview
| NPI | 1326051640 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 15, 2006 |
| Last updated in NPPES | Sep 28, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 036091028 | 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 - Internal Medicine (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 129 |
|---|---|
| Services billed | 815 across 17 procedure codes |
| Paid by Medicare | $73,663 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,236 · 6,766 30-day fills |
|---|---|
| Patients | 185 |
| Total drug cost | $266,003 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | University of Chicago, Pritzker School of Medicine |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Internal Medicine |
Hospital affiliations
- Advocate Sherman HospitalElgin, IL
- Northwestern Medicine Central Dupage HospitalWinfield, IL
- Northwestern Medicine Delnor Community HospitalGeneva, IL
- Saint Joseph Hospital-ElginElgin, IL
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 85 internal medicine physicians in Elgin · All internal medicine physicians in Illinois