Denise Elizabeth Hamilton, PA-C
NPI 1043657323ActiveIndividual· Physician Assistant· Fredericksburg, VA
Physician Assistant (PA-C) with Mary Washington Healthcare Providers LLC, practicing in Fredericksburg, Virginia. Their prescriptions cost Medicare Part D more than their services did: $216,922 for 1,057 claims, against $37,683 paid for services in 2024. Janssen Biotech, Inc. was the largest of 20 companies reporting payments in 2025, $2,482 in all, mostly food and beverage. Lists Mary Washington Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1043657323 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | May 28, 2013 |
| Last updated in NPPES | Dec 10, 2025 |
| Certified by provider | Dec 10, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 0110-004238 | 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 - Physician Assistant (VA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 460 |
|---|---|
| Services billed | 630 across 7 procedure codes |
| Paid by Medicare | $37,683 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,057 · 2,190 30-day fills |
|---|---|
| Patients | 362 |
| Total drug cost | $216,922 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 2013 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Mary Washington Healthcare Providers LLCMc Lean, VA · 262 clinicians
Hospital affiliations
- Mary Washington HospitalFredericksburg, VA
- Stafford Hospital, LLCStafford, VA
Industry payments (Open Payments)
- 2025$2,482 · 96 payments from 20 companies
- 2024$3,627 · 116 payments from 32 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $430.73 | 18 |
| Abbvie Inc. | $317.51 | 12 |
| Takeda Pharmaceuticals U.S.A., Inc. | $210.21 | 12 |
| Genzyme Corporation | $207.49 | 5 |
| Enterra Medical, Inc. | $173.18 | 1 |
What the 2025 payments were for
- Food and Beverage$2,482 · 96 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 115 physician assistants in Fredericksburg · All physician assistants in Virginia