Deborah E. Treacy, M.D.
NPI 1558391524ActiveIndividual· Emergency Medicine· O Fallon, IL
Emergency Medicine (M.D.) in O Fallon, Illinois, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 1992). 453 Medicare patients in 2024, $72,840 paid; nearly all of their 381 Part D prescriptions were generic (93%).
Overview
| NPI | 1558391524 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 4, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | — | 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 - Emergency Medicine (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 453 |
|---|---|
| Services billed | 652 across 28 procedure codes |
| Paid by Medicare | $72,840 |
Part D prescriptions in 2024
| Prescriptions (claims) | 381 · 384 30-day fills |
|---|---|
| Patients | 209 |
| Total drug cost | $7,826 |
| Generic share | 93% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 1992 |
| Medicare specialty | Emergency Medicine |
| Secondary specialties | Family Practice |
Medical group
- Cepamerica Illinois LLPArlington Heights, IL · 499 clinicians
Hospital affiliation
- St Josephs HospitalBreese, 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 27 emergency medicine physicians in O Fallon · All emergency medicine physicians in Illinois