April Lynn Karczmarek, DNP
NPI 1831731652ActiveIndividual· Nurse Practitioner, Acute Care· Bel Air, MD
Nurse Practitioner, Acute Care (DNP) with Johns Hopkins University and 2 other groups, practicing in Bel Air, Maryland. 63 Medicare patients in 2024, $6,516 paid; nearly all of their 63 Part D prescriptions were generic (92%). Lists Johns Hopkins Bayview Medical Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1831731652 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DNP |
| Sole proprietor | No |
| NPI issued | Oct 14, 2019 |
| Last updated in NPPES | Oct 14, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Acute Care Primary | 363LA2100X | R158499 | MD |
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 (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 63 |
|---|---|
| Services billed | 77 across 10 procedure codes |
| Paid by Medicare | $6,516 |
Part D prescriptions in 2024
| Prescriptions (claims) | 63 · 70 30-day fills |
|---|---|
| Patients | 30 |
| Total drug cost | $2,059 |
| Generic share | 92% of claims |
Education and affiliations
| Graduation year | 2019 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical groups
- Johns Hopkins UniversityBaltimore, MD · 2,909 clinicians
- Adfinitas Health at Upper Chesapeake LLCBel Air, MD · 78 clinicians
- Adfinitas Health at Upper Chesapeake Aberdeen LLCAberdeen, MD · 40 clinicians
Hospital affiliations
- Johns Hopkins Bayview Medical CenterBaltimore, MD
- Umd Upper Chesapeake Medical CenterBel Air, MD
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 25 acute care nurse practitioners in Bel Air · All acute care nurse practitioners in Maryland