Mackenzie Marky, AGACNP-BC
NPI 1891407482ActiveIndividual· Nurse Practitioner· Newark, DE
Nurse Practitioner (AGACNP-BC) with Christiana Care Health Services Inc, practicing in Newark, Delaware. Their prescriptions cost Medicare Part D more than their services did: $48,225 for 540 claims, against $22,538 paid for services in 2024. Abbott Laboratories was the largest of 9 companies reporting payments in 2025, $532.50 in all, mostly food and beverage. Lists Bayhealth Medical Center, Kent Campus and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1891407482 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | AGACNP-BC |
| Sole proprietor | No |
| NPI issued | Dec 15, 2022 |
| Last updated in NPPES | Feb 9, 2023 |
| Certified by provider | Feb 9, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | LP-0010605 | DE |
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 (DE) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 132 |
|---|---|
| Services billed | 503 across 8 procedure codes |
| Paid by Medicare | $22,538 |
Part D prescriptions in 2024
| Prescriptions (claims) | 540 · 1,105 30-day fills |
|---|---|
| Patients | 116 |
| Total drug cost | $48,225 |
| Generic share | 92% of claims |
Education and affiliations
| Graduation year | 2022 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Christiana Care Health Services IncNewark, DE · 1,483 clinicians
Hospital affiliations
- Bayhealth Medical Center, Kent CampusDover, DE
- Christiana HospitalNewark, DE
- Union Hospital of Cecil CountyElkton, MD
Industry payments (Open Payments)
- 2025$532.50 · 20 payments from 9 companies
- 2024$446.74 · 15 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbott Laboratories | $190.90 | 9 |
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $135.04 | 3 |
| Abiomed | $46.74 | 2 |
| Alnylam Pharmaceuticals Inc. | $38.85 | 1 |
| Actelion Pharmaceuticals US, Inc. | $29.16 | 1 |
What the 2025 payments were for
- Food and Beverage$532.50 · 20 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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