Karen Ann Prahler, CRNP
NPI 1578166492ActiveIndividual· Nurse Practitioner, Family· Prince Frederick, MD
Nurse Practitioner, Family (CRNP) with Anne Arundel Gastroenterology Associates, P.A., practicing in Prince Frederick, Maryland. Their prescriptions cost Medicare Part D more than their services did: $61,349 for 570 claims, against $34,486 paid for services in 2024. Madrigal Pharmaceuticals was the largest of 7 companies reporting payments in 2025, $624.82 in all, mostly food and beverage. Lists Luminis Health Anne Arundel Medical Center, Inc as a hospital affiliation.
Overview
| NPI | 1578166492 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | CRNP |
| Sole proprietor | Yes |
| NPI issued | Nov 21, 2020 |
| Last updated in NPPES | Dec 15, 2022 |
| Certified by provider | Dec 15, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | R234785 | MD |
| Registered Nurse | 163W00000X | 1165256 | KY |
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 (DC); Practitioner - Nurse Practitioner (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 266 |
|---|---|
| Services billed | 479 across 11 procedure codes |
| Paid by Medicare | $34,486 |
Part D prescriptions in 2024
| Prescriptions (claims) | 570 · 900 30-day fills |
|---|---|
| Patients | 219 |
| Total drug cost | $61,349 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 2022 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Anne Arundel Gastroenterology Associates, P.A.Stevensville, MD · 20 clinicians
Hospital affiliation
- Luminis Health Anne Arundel Medical Center, IncAnnapolis, MD
Industry payments (Open Payments)
- 2025$624.82 · 15 payments from 7 companies
- 2024$805.50 · 19 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Madrigal Pharmaceuticals | $138.55 | 4 |
| Abbvie Inc. | $126.07 | 3 |
| Genzyme Corporation | $109.80 | 1 |
| Ipsen Biopharmaceuticals, Inc | $102.18 | 1 |
| Janssen Biotech, Inc. | $75.33 | 2 |
What the 2025 payments were for
- Food and Beverage$573.87 · 14 payments
- Education$50.95 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 26 family nurse practitioners in Prince Frederick · All family nurse practitioners in Maryland