Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Margaret Spencer Johnston

Dermatology Physician in Colchester, VT · enumerated 2019 · practices at Green Mountain Plastic and Reconstructive Surgery.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1669932406

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Registry record

Entity type Individual (Type 1)

Name Margaret Spencer Johnston

Sex Female

Practice address 354 Mountain View Dr Ste 300, Colchester, VT, 05446

Phone (802) 864-0192

Enumeration date Mar 20, 2019

Last updated in NPPES Aug 18, 2025

Taxonomy & licenses

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License 332091 (NY) Secondary

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License 042.0017627 (VT) Primary

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How do I verify Margaret Johnston's NPI record?

Cross-check NPI 1669932406 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1669932406 active?

Yes, as of the latest NPPES snapshot, NPI 1669932406 is active (record last updated 2025-08-18).

Other providers at this practice address

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Thomas Davis Physician Assistant · Colchester, VT NPI 1831198704 Glenn Goldman MOHS-Micrographic Surgery Physician · Colchester, VT NPI 1992717458 Nicholas Brenny Physician Assistant · Colchester, VT NPI 1730364142 Maria Mcgowan Dermatology Physician · Colchester, VT NPI 1699023499 Green Mountain Plastic and Reconstructive Surgery Plastic Surgery Physician · Colchester, VT NPI 1598278137 Olivia Nemier Physician Assistant · Colchester, VT NPI 1558044461 Brooke Palmer Physician Assistant · Colchester, VT NPI 1306734884

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-08-18.