Jessica A. Macwilliams, PAC
NPI 1578663001ActiveIndividual· Physician Assistant· Agawam, MA
Physician Assistant (PAC) with Hillside Dermatology PC, practicing in Agawam, Massachusetts. Their prescriptions cost Medicare Part D more than their services did: $962,195 for 884 claims, against $18,523 paid for services in 2024. Abbvie Inc. was the largest of 19 companies reporting payments in 2025, $3,721 in all, mostly food and beverage.
Overview
| NPI | 1578663001 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PAC |
| Sole proprietor | No |
| NPI issued | Sep 24, 2006 |
| Last updated in NPPES | Apr 13, 2026 |
| Certified by provider | Apr 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 002204 | CT |
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 (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 232 |
|---|---|
| Services billed | 531 across 27 procedure codes |
| Paid by Medicare | $18,523 |
Part D prescriptions in 2024
| Prescriptions (claims) | 884 · 1,079 30-day fills |
|---|---|
| Patients | 332 |
| Total drug cost | $962,195 |
| Generic share | 79% of claims |
Education and affiliations
| Graduation year | 2005 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Hillside Dermatology PCAgawam, MA · 7 clinicians
Industry payments (Open Payments)
- 2025$3,721 · 168 payments from 19 companies
- 2024$4,104 · 178 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $769.50 | 46 |
| Ucb, Inc. | $731.37 | 28 |
| Novartis Pharmaceuticals Corporation | $409.68 | 18 |
| Lilly USA, LLC | $227.72 | 10 |
| Incyte Corporation | $205.33 | 8 |
What the 2025 payments were for
- Food and Beverage$3,648 · 167 payments
- Education$73.50 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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