Quick answers
- Which hospitals does Margaret Johnston work at?
- Medicare's official clinician data lists Margaret Johnston at 2 hospitals: The University of Vermont Health Network - Champl… and Univ. of Vermont - Fletcher Allen Health Care. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Margaret Johnston see patients?
- Medicare's clinician data lists 2 practice locations, including Plattsburgh, NY and Colchester, VT. Call before your visit to confirm the address.
- What is Margaret Johnston's specialty?
- Medicare lists Dermatology as the primary specialty.
- Does Margaret Johnston accept Medicare assignment?
- Yes. Medicare's clinician data says Margaret Johnston accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Margaret Johnston?
- (802) 864-0192, as listed in official Medicare / NPI Registry data.
- What is Margaret Johnston's NPI number?
- 1669932406. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Margaret Johnston works
Medicare's Facility Affiliation Data lists Margaret Johnston at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- The University of Vermont Health Network - Champl…Plattsburgh, NY · Acute Care Hospital · CCN 330250
- Univ. of Vermont - Fletcher Allen Health CareBurlington, VT · Acute Care Hospital · CCN 470003
Practice locations
Addresses where Margaret Johnston is enrolled with Medicare (CMS data updated 2026-10-02).
- 2 Healey AvePlattsburgh, NY 12901 (802) 864‑0192
- 354 Mountain View Dr, Suite 300Colchester, VT 05446 (802) 864‑0192
Group practices
Medicare enrollment lists Margaret Johnston as a member of this group (CMS data updated 2026-10-02).
- Green Mountain Dermatology PLLC16 clinicians in the group
Specialties
- Dermatologyprimary
Other dermatologists in Plattsburgh
Clinicians with the same Medicare primary specialty in Plattsburgh, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2019 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1669932406 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians