Mari E. Parker, FNP-BC
NPI 1093066284ActiveIndividual· Nurse Practitioner, Family· Leesburg, VA
Nurse Practitioner, Family (FNP-BC) with Loudoun Medical Group, PC and 1 other group, practicing in Leesburg, Virginia. Their prescriptions cost Medicare Part D more than their services did: $180,715 for 926 claims, against $68,833 paid for services in 2024. Antares Pharma, Inc. was the largest of 18 companies reporting payments in 2025, $998.66 in all, mostly food and beverage. Lists Inova Loudoun Hospital as a hospital affiliation.
Overview
| NPI | 1093066284 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | FNP-BC |
| Sole proprietor | No |
| NPI issued | Sep 27, 2012 |
| Last updated in NPPES | Mar 2, 2026 |
| Certified by provider | Mar 2, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | 0024170395 | VA |
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 (VA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 466 |
|---|---|
| Services billed | 4,378 across 28 procedure codes |
| Paid by Medicare | $68,833 |
Part D prescriptions in 2024
| Prescriptions (claims) | 926 · 1,972 30-day fills |
|---|---|
| Patients | 293 |
| Total drug cost | $180,715 |
| Generic share | 83% of claims |
Education and affiliations
| Graduation year | 2012 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical groups
- Loudoun Medical Group, PCLovettsville, VA · 271 clinicians
- Gastrointestinal Specialists LLCMechanicsville, VA · 81 clinicians
Hospital affiliation
- Inova Loudoun HospitalLeesburg, VA
Industry payments (Open Payments)
- 2025$998.66 · 39 payments from 18 companies
- 2024$1,700 · 54 payments from 22 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Antares Pharma, Inc. | $192.36 | 6 |
| Sumitomo Pharma America, Inc. | $105.42 | 4 |
| Tolmar, Inc. | $99.90 | 4 |
| Astellas Pharma US Inc | $79.79 | 4 |
| Pfizer Inc. | $74.74 | 3 |
What the 2025 payments were for
- Food and Beverage$998.66 · 39 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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