Maureen Morgan O'Connor, MD
NPI 1558460337ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Bourbonnais, IL
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD) in Bourbonnais, Illinois, licensed in IL, with an NPI issued in September 2006. Their prescriptions cost Medicare Part D more than their services did: $1,217,823 for 2,744 claims, against $63,445 paid for services in 2024. Lilly USA, LLC was the largest of 9 companies reporting payments in 2025, $215.43 in all, mostly food and beverage. Lists Iroquois Memorial Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1558460337 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 21, 2006 |
| Last updated in NPPES | Jan 22, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 036097969 | 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 - Endocrinology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 209 |
|---|---|
| Services billed | 1,260 across 15 procedure codes |
| Paid by Medicare | $63,445 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,744 · 6,974 30-day fills |
|---|---|
| Patients | 263 |
| Total drug cost | $1,217,823 |
| Generic share | 50% of claims |
Education and affiliations
| Graduation year | 1990 |
|---|---|
| Medicare specialty | Endocrinology |
| Telehealth | Offers telehealth |
Hospital affiliations
- Iroquois Memorial HospitalWatseka, IL
- Presence St Marys HospitalKankakee, IL
- Riverside Medical CenterKankakee, IL
Industry payments (Open Payments)
- 2025$215.43 · 12 payments from 9 companies
- 2024$126.81 · 7 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $51.50 | 3 |
| Novo Nordisk Inc | $42.39 | 2 |
| Insulet Corporation | $22.04 | 1 |
| Xeris Pharmaceuticals, Inc. | $18.27 | 1 |
| Bayer Healthcare Pharmaceuticals Inc. | $17.51 | 1 |
What the 2025 payments were for
- Food and Beverage$215.43 · 12 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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