Alexandria Tarvainis, DNP, FNP-BC
NPI 1447939822ActiveIndividual· Nurse Practitioner· Oak Brook, IL
Nurse Practitioner (DNP, FNP-BC) with Dupage Medical Group Ltd, practicing in Oak Brook, Illinois. Their prescriptions cost Medicare Part D more than their services did: $201,655 for 421 claims, against $16,924 paid for services in 2024. Abbvie Inc. was the largest of 23 companies reporting payments in 2025, $4,144 in all, mostly food and beverage.
Overview
| NPI | 1447939822 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DNP, FNP-BC |
| Sole proprietor | No |
| NPI issued | Jul 13, 2023 |
| Last updated in NPPES | Oct 6, 2023 |
| Certified by provider | Jul 13, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 209024538 | 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 | 54 |
|---|---|
| Services billed | 464 across 19 procedure codes |
| Paid by Medicare | $16,924 |
Part D prescriptions in 2024
| Prescriptions (claims) | 421 · 775 30-day fills |
|---|---|
| Patients | 88 |
| Total drug cost | $201,655 |
| Generic share | 62% of claims |
Education and affiliations
| Graduation year | 2021 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Dupage Medical Group LtdWinfield, IL · 1,322 clinicians
Industry payments (Open Payments)
- 2025$4,144 · 189 payments from 23 companies
- 2024$4,754 · 180 payments from 16 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $611.45 | 38 |
| Lilly USA, LLC | $525.20 | 21 |
| Novo Nordisk Inc | $381.25 | 18 |
| Madrigal Pharmaceuticals | $317.36 | 7 |
| Aimmune Therapeutics, Inc. | $308.52 | 13 |
What the 2025 payments were for
- Food and Beverage$4,144 · 189 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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