Michelle T. Gahgan, APRN
NPI 1497373286ActiveIndividual· Nurse Practitioner· Algonquin, IL
Nurse Practitioner (APRN) with Thomas G Salvi MD LLC, practicing in Algonquin, Illinois. Their prescriptions cost Medicare Part D more than their services did: $193,989 for 1,606 claims, against $66,662 paid for services in 2024. Corcept Therapeutics was the largest of 24 companies reporting payments in 2025, $3,959 in all, mostly food and beverage. Lists Advocate Good Shepherd Hospital and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1497373286 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | APRN |
| Sole proprietor | Yes |
| NPI issued | Jul 8, 2020 |
| Last updated in NPPES | Apr 23, 2024 |
| Certified by provider | Apr 23, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 209021567 | 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 - Nurse Practitioner (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 237 |
|---|---|
| Services billed | 1,238 across 40 procedure codes |
| Paid by Medicare | $66,662 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,606 · 3,361 30-day fills |
|---|---|
| Patients | 232 |
| Total drug cost | $193,989 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 2020 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Thomas G Salvi MD LLCAlgonquin, IL · 3 clinicians
Hospital affiliations
- Advocate Good Shepherd HospitalBarrington, IL
- Advocate Sherman HospitalElgin, IL
- Northwestern Medicine Central Dupage HospitalWinfield, IL
- Northwestern Medicine McHenryMcHenry, IL
Industry payments (Open Payments)
- 2025$3,959 · 194 payments from 24 companies
- 2024$3,755 · 199 payments from 24 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Corcept Therapeutics | $408.95 | 12 |
| Abbvie Inc. | $368.86 | 18 |
| Novo Nordisk Inc | $350.45 | 14 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $316.17 | 24 |
| Pfizer Inc. | $295.30 | 16 |
What the 2025 payments were for
- Food and Beverage$3,959 · 194 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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