Sarah Alice Gilfillan, PA
NPI 1043971435ActiveIndividual· Physician Assistant· Des Plaines, IL
Physician Assistant (PA) in Des Plaines, Illinois, trained at Saint Louis University School of Medicine (class of 2022). Their prescriptions cost Medicare Part D more than their services did: $12,152 for 180 claims, against $7,913 paid for services in 2024. Janssen Biotech, Inc. was the largest of 8 companies reporting payments in 2025, $394.90 in all, mostly food and beverage.
Overview
| NPI | 1043971435 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA |
| Sole proprietor | No |
| NPI issued | Jan 6, 2022 |
| Last updated in NPPES | Apr 8, 2026 |
| Certified by provider | Apr 8, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 085-009600 | IL |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Physician Assistant (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 69 |
|---|---|
| Services billed | 108 across 9 procedure codes |
| Paid by Medicare | $7,913 |
Part D prescriptions in 2024
| Prescriptions (claims) | 180 · 267 30-day fills |
|---|---|
| Patients | 104 |
| Total drug cost | $12,152 |
| Generic share | 76% of claims |
Education and affiliations
| Medical school | Saint Louis University School of Medicine |
|---|---|
| Graduation year | 2022 |
| Medicare specialty | Physician Assistant |
| Telehealth | Offers telehealth |
Medical group
- Midwest Digestive Health and Nutrition, PLLCDes Plaines, IL · 25 clinicians
Hospital affiliation
- St Alexius Medical CenterHoffman Estates, IL
Industry payments (Open Payments)
- 2025$394.90 · 14 payments from 8 companies
- 2024$183.49 · 7 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $104.30 | 3 |
| Abbvie Inc. | $68.85 | 3 |
| Ardelyx, Inc. | $66.67 | 2 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $46.21 | 2 |
| Regeneron Healthcare Solutions, Inc. | $32.06 | 1 |
What the 2025 payments were for
- Food and Beverage$394.90 · 14 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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