Margaret Spencer Johnston
NPI 1669932406ActiveIndividual· Dermatology· Colchester, VT
Dermatology with Green Mountain Dermatology PLLC, practicing in Colchester, Vermont. Their prescriptions cost Medicare Part D more than their services did: $519,421 for 1,381 claims, against $109,737 paid for services in 2024. Lists The University of Vermont Health Network - Champl and 1 other hospital as hospital affiliations.
Overview
| NPI | 1669932406 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Mar 20, 2019 |
| Last updated in NPPES | Oct 22, 2026 |
| Certified by provider | Oct 22, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology Primary | 207N00000X | 042.0017627 | VT |
| Dermatology | 207N00000X | 332091 | NY |
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 - Dermatology (NY); Practitioner - Dermatology (VT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 674 |
|---|---|
| Services billed | 2,307 across 40 procedure codes |
| Paid by Medicare | $109,737 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,381 · 1,593 30-day fills |
|---|---|
| Patients | 544 |
| Total drug cost | $519,421 |
| Generic share | 91% of claims |
Education and affiliations
| Graduation year | 2019 |
|---|---|
| Medicare specialty | Dermatology |
Medical group
- Green Mountain Dermatology PLLCPlattsburgh, NY · 16 clinicians
Hospital affiliations
- The University of Vermont Health Network - ChamplPlattsburgh, NY
- Univ. of Vermont - Fletcher Allen Health CareBurlington, VT
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Dermatology providers in Colchester
- 1790737393
- 1093577827
- 1356444509
- 1699023499
- 1326016742