Mackenzie Armstrong, PA-C
NPI 1225612385ActiveIndividual· Physician Assistant· Corryton, TN
Physician Assistant (PA-C) with Knoxville Center for Dermatology and Plastic Surgery Pl, practicing in Corryton, Tennessee. In 2024 Medicare paid $4,826 for 48 patients, and Part D covered 100 of their prescriptions, 88% of them generic. Janssen Biotech, Inc. was the largest of 18 companies reporting payments in 2025, $4,519 in all, mostly food and beverage.
Overview
| NPI | 1225612385 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | May 5, 2021 |
| Last updated in NPPES | Jul 16, 2021 |
| Certified by provider | May 29, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 4555 | TN |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Physician Assistant (TN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 48 |
|---|---|
| Services billed | 174 across 29 procedure codes |
| Paid by Medicare | $4,826 |
Part D prescriptions in 2024
| Prescriptions (claims) | 100 · 102 30-day fills |
|---|---|
| Patients | 58 |
| Total drug cost | $972.03 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 2020 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Knoxville Center for Dermatology and Plastic Surgery PlKnoxville, TN · 3 clinicians
Industry payments (Open Payments)
- 2025$4,519 · 107 payments from 18 companies
- 2024$1,379 · 31 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $2,160 | 24 |
| Abbvie Inc. | $481.12 | 21 |
| Ucb, Inc. | $430.35 | 14 |
| Lilly USA, LLC | $297.80 | 10 |
| Novartis Pharmaceuticals Corporation | $208.04 | 8 |
What the 2025 payments were for
- Food and Beverage$3,294 · 105 payments
- Consulting Fee$1,125 · 1 payment
- Education$99.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Physician Assistant providers in Corryton
- 1134489024
- 1538750732
- 1265139562