Jennifer Ann Cahill, M.D.
NPI 1952643405ActiveIndividual· Internal Medicine, Gastroenterology· Arlington Heights, IL
Internal Medicine, Gastroenterology (M.D.) in Arlington Heights, Illinois, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 2012). Their prescriptions cost Medicare Part D more than their services did: $1,211,441 for 936 claims, against $383,799 paid for services in 2024. Abbvie Inc. was the largest of 10 companies reporting payments in 2025, $1,157 in all, mostly food and beverage.
Overview
| NPI | 1952643405 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 22, 2013 |
| Last updated in NPPES | Apr 6, 2026 |
| Certified by provider | Apr 6, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 036140478 | 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 | 546 |
|---|---|
| Services billed | 17,076 across 59 procedure codes |
| Paid by Medicare | $383,799 |
Part D prescriptions in 2024
| Prescriptions (claims) | 936 · 1,801 30-day fills |
|---|---|
| Patients | 382 |
| Total drug cost | $1,211,441 |
| Generic share | 75% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 2012 |
| Medicare specialty | Gastroenterology |
Medical group
- Illinois Gastroenterology Group LLCArlington Heights, IL · 115 clinicians
Hospital affiliations
- Alexian Brothers Medical Center 1Elk Grove Village, IL
- Northwest Community Hospital 1Arlington Heights, IL
- St Alexius Medical CenterHoffman Estates, IL
Industry payments (Open Payments)
- 2025$1,157 · 49 payments from 10 companies
- 2024$943.42 · 50 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $590.89 | 27 |
| Janssen Biotech, Inc. | $141.70 | 4 |
| Takeda Pharmaceuticals U.S.A., Inc. | $111.07 | 6 |
| Celltrion USA Inc. | $104.61 | 4 |
| Ardelyx, Inc. | $56.23 | 2 |
What the 2025 payments were for
- Food and Beverage$1,157 · 49 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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