Erica Jane Twarling, PA
NPI 1033173356ActiveIndividual· Physician Assistant, Surgical· Glenview, IL
Physician Assistant, Surgical (PA) with Illinois Bone and Joint Institute, LLC, practicing in Glenview, Illinois. 356 Medicare patients in 2024, $81,885 paid; nearly all of their 547 Part D prescriptions were generic (97%). Ferring Pharmaceuticals Inc. was the largest of 2 companies reporting payments in 2025, $136.17 in all, mostly food and beverage. Lists Northshore University Healthsystem - Evanston Hospital as a hospital affiliation.
Overview
| NPI | 1033173356 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA |
| Sole proprietor | No |
| NPI issued | Apr 13, 2006 |
| Last updated in NPPES | Jun 6, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant, Surgical Primary | 363AS0400X | 085-002031 | 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 - Physician Assistant (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 356 |
|---|---|
| Services billed | 1,309 across 35 procedure codes |
| Paid by Medicare | $81,885 |
Part D prescriptions in 2024
| Prescriptions (claims) | 547 · 576 30-day fills |
|---|---|
| Patients | 283 |
| Total drug cost | $6,428 |
| Generic share | 97% of claims |
Education and affiliations
| Graduation year | 2003 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Illinois Bone and Joint Institute, LLCGurnee, IL · 604 clinicians
Hospital affiliation
Industry payments (Open Payments)
- 2025$136.17 · 5 payments from 2 companies
- 2024$57.94 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ferring Pharmaceuticals Inc. | $86.45 | 4 |
| Pacira Pharmaceuticals Incorporated | $49.72 | 1 |
What the 2025 payments were for
- Food and Beverage$136.17 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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