Adrienne Fregia, MD
NPI 1477653111ActiveIndividual· Internal Medicine, Gastroenterology· Olympia Fields, IL
Internal Medicine, Gastroenterology (MD) in Olympia Fields, Illinois, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 1988). 302 Medicare patients in 2024, $51,905 paid; nearly all of their 821 Part D prescriptions were generic (91%). Janssen Biotech, Inc. was the largest of 7 companies reporting payments in 2025, $742.54 in all, mostly food and beverage.
Overview
| NPI | 1477653111 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Sep 23, 2006 |
| Last updated in NPPES | Jul 18, 2022 |
| Certified by provider | Jul 18, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 036081708 | IL |
| Specialist | 174400000X | 036081708 | IL |
| Internal Medicine | 207R00000X | 036-081708 | 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 - Gastroenterology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 302 |
|---|---|
| Services billed | 535 across 16 procedure codes |
| Paid by Medicare | $51,905 |
Part D prescriptions in 2024
| Prescriptions (claims) | 821 · 1,428 30-day fills |
|---|---|
| Patients | 308 |
| Total drug cost | $29,238 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 1988 |
| Medicare specialty | Gastroenterology |
Medical groups
- Prime Healthcare Illinois Medical Group LLCChicago, IL · 322 clinicians
- Specialty Physicians of Illinois LLCOlympia Fields, IL · 102 clinicians
Hospital affiliations
- Franciscan Health Olympia & Chicago HeightsOlympia Fields, IL
- Ingalls Memorial HospitalHarvey, IL
Industry payments (Open Payments)
- 2025$742.54 · 33 payments from 7 companies
- 2024$369.72 · 9 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $328.25 | 14 |
| Pfizer Inc. | $131.83 | 6 |
| Gilead Sciences, Inc. | $111.95 | 5 |
| Abbvie Inc. | $93.30 | 5 |
| Genzyme Corporation | $31.00 | 1 |
What the 2025 payments were for
- Food and Beverage$742.54 · 33 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All Internal Medicine, Gastroenterology providers in Illinois →