Robert B. Maguire, MD
NPI 1174571673ActiveIndividual· Internal Medicine· Ottawa, IL
Internal Medicine (MD) in Ottawa, Illinois, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 1990). Their prescriptions cost Medicare Part D more than their services did: $876,063 for 15,252 claims, against $103,038 paid for services in 2024.
Overview
| NPI | 1174571673 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 5, 2006 |
| Last updated in NPPES | Apr 13, 2026 |
| Certified by provider | Apr 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 036-084603 | 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 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 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 | 441 |
|---|---|
| Services billed | 1,201 across 19 procedure codes |
| Paid by Medicare | $103,038 |
Part D prescriptions in 2024
| Prescriptions (claims) | 15,252 · 15,557 30-day fills |
|---|---|
| Patients | 660 |
| Total drug cost | $876,063 |
| Generic share | 80% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 1990 |
| Medicare specialty | Internal Medicine |
Medical groups
- T4 Medical PLLCOttawa, IL · 32 clinicians
- Pai Participant 27, PCWaterloo, IL · 9 clinicians
Hospital affiliations
- Osf Saint Clare Medical CenterPrinceton, IL
- Osf Saint Elizabeth Mdl CtrPeru, IL
Other facilities
- Lightways Hospice and Serious Illness CareHospice · Joliet, IL
- Allure of MendotaNursing home · Mendota, IL
- Allure of PeruNursing home · Peru, IL
- Arc at StreatorNursing home · Streator, IL
- Pavilion of OttawaNursing home · Ottawa, IL
- Pleasant View Luther HomeNursing home · Ottawa, 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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