William T. O'Rourke, MD
NPI 1013013119ActiveIndividual· Internal Medicine· Lombard, IL
Internal Medicine (MD) in Lombard, Illinois, trained at Loyola University of Chicago, Stritch School of Medicine (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $587,566 for 7,604 claims, against $196,437 paid for services in 2024. Corcept Therapeutics reported $26.08 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1013013119 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 15, 2006 |
| Last updated in NPPES | Jul 28, 2025 |
| Certified by provider | Jul 28, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 036096382 | IL |
| Internal Medicine | 207R00000X | 36-096382 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 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 | 497 |
|---|---|
| Services billed | 3,032 across 38 procedure codes |
| Paid by Medicare | $196,437 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,604 · 17,460 30-day fills |
|---|---|
| Patients | 657 |
| Total drug cost | $587,566 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | Loyola University of Chicago, Stritch School of Medicine |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Advocate Health and Hospitals CorporationChicago, IL · 3,118 clinicians
Hospital affiliations
- Advocate Good Samaritan HospitalDowners Grove, IL
- Advocate Lutheran General HospitalPark Ridge, IL
- Edward HospitalNaperville, IL
- Elmhurst Memorial HospitalElmhurst, IL
- Northwestern Medicine Central Dupage HospitalWinfield, IL
Other facilities
- Advocate Home Health Care ServHome health agency · Oakbrook, IL
- Residential Home HealthHome health agency · Lisle, IL
- Resilience Home Health, LLCHome health agency · Aurora, IL
Industry payments (Open Payments)
- 2025$26.08 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Corcept Therapeutics | $26.08 | 1 |
What the 2025 payments were for
- Food and Beverage$26.08 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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