Corrie McMahon, FNP
NPI 1104423094ActiveIndividual· Nurse Practitioner, Family· Wauconda, IL
Nurse Practitioner, Family (FNP) with Family Medicine Specialists S.C. and 2 other groups, practicing in Wauconda, Illinois. Their prescriptions cost Medicare Part D more than their services did: $319,517 for 2,500 claims, against $39,003 paid for services in 2024. Abbvie Inc. was the largest of 25 companies reporting payments in 2025, $1,733 in all, mostly food and beverage. Lists Northwestern Lake Forest Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1104423094 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | FNP |
| Sole proprietor | No |
| NPI issued | Oct 5, 2020 |
| Last updated in NPPES | Oct 28, 2020 |
| Certified by provider | Oct 28, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | 209022198 | IL |
| Nurse Practitioner, Family | 363LF0000X | 041458922 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 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 | 161 |
|---|---|
| Services billed | 945 across 32 procedure codes |
| Paid by Medicare | $39,003 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,500 · 4,940 30-day fills |
|---|---|
| Patients | 370 |
| Total drug cost | $319,517 |
| Generic share | 83% of claims |
Education and affiliations
| Graduation year | 2020 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical groups
- Family Medicine Specialists S.C.Wauconda, IL · 24 clinicians
- Family Medicine Specialists of Round Lake Incorporated S CRound Lake Beach, IL · 21 clinicians
- Family Medicine Specialists of Mount Prospect S CMcHenry, IL · 18 clinicians
Hospital affiliations
- Northwestern Lake Forest HospitalLake Forest, IL
- Northwestern Medicine McHenryMcHenry, IL
- Vista Medical Center EastWaukegan, IL
Industry payments (Open Payments)
- 2025$1,733 · 78 payments from 25 companies
- 2024$1,529 · 76 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $398.43 | 21 |
| Otsuka America Pharmaceutical, Inc. | $144.05 | 4 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $123.40 | 5 |
| Teva Pharmaceuticals USA, Inc. | $121.83 | 1 |
| Astrazeneca Pharmaceuticals LP | $111.06 | 6 |
What the 2025 payments were for
- Food and Beverage$1,733 · 78 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 28 family nurse practitioners in Wauconda · All family nurse practitioners in Illinois