Ruth W. Thuo, MSN
NPI 1871004762ActiveIndividual· Nurse Practitioner· Wilmington, DE
Nurse Practitioner (MSN) with Zarek Donohue LLC, practicing in Wilmington, Delaware. 363 Medicare patients in 2024, $3,363 paid; nearly all of their 97 Part D prescriptions were generic (91%). Cipher Pharmaceuticals US LLC was the largest of 8 companies reporting payments in 2025, $274.94 in all, mostly food and beverage. Lists Christiana Hospital as a hospital affiliation.
Overview
| NPI | 1871004762 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MSN |
| Sole proprietor | No |
| NPI issued | Oct 18, 2017 |
| Last updated in NPPES | Mar 10, 2025 |
| Certified by provider | Mar 10, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | LP-00000222 | DE |
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 (DE); Practitioner - Nurse Practitioner (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 363 |
|---|---|
| Services billed | 398 across 6 procedure codes |
| Paid by Medicare | $3,363 |
Part D prescriptions in 2024
| Prescriptions (claims) | 97 · 161 30-day fills |
|---|---|
| Patients | 25 |
| Total drug cost | $4,102 |
| Generic share | 91% of claims |
Education and affiliations
| Graduation year | 2017 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Zarek Donohue LLCWilmington, DE · 22 clinicians
Hospital affiliation
- Christiana HospitalNewark, DE
Industry payments (Open Payments)
- 2025$274.94 · 11 payments from 8 companies
- 2024$54.22 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Cipher Pharmaceuticals US LLC | $99.12 | 1 |
| Lilly USA, LLC | $55.12 | 3 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $33.77 | 2 |
| Exact Sciences Corporation | $22.08 | 1 |
| Astellas Pharma US Inc | $17.11 | 1 |
What the 2025 payments were for
- Food and Beverage$274.94 · 11 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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