Margaret Spencer Johnston
Dermatology Physician · Colchester, VT
Margaret Spencer Johnston is a dermatology physician with a practice address in Colchester, Vermont, and NPI 1669932406, issued on Mar 20, 2019. Check the license (Vermont 042.0017627, as entered in NPPES) on the Vermont Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- Margaret Spencer Johnston
- Primary taxonomy
- Dermatology Physician 207N00000X
- License numbers
- 042.0017627 VT
332091 NY
Self-reported in NPPES; status is on the state search - Practice location
- 354 Mountain View Dr Ste 300, Colchester, VT 05446
- Phone
- (802) 864-0192
- Enumerated
- Mar 20, 2019
- Record last updated
- Aug 18, 2025
- Medicare enrollment
- Enrolled (PECOS I20251106003074); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 29 in Vermont → Look up another NPI →
Also registered at 354 Mountain View Dr Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nicholas Brenny, PA-CPhysician Assistant1730364142
- Thomas Davis, P.A.-CPhysician Assistant1831198704
- Glenn Goldman, MDMOHS-Micrographic Surgery Physician1992717458
- Maria McGowanDermatology Physician1699023499
- Olivia Nemier, PA-CPhysician Assistant1558044461
- Brooke Palmer, PA-CPhysician Assistant1306734884
Verify Margaret Spencer Johnston in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVermont Board of Medical Practice
Search for license 042.0017627Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% more Medicare Part D claims than the average dermatology physician in 2024
1,381 Medicare Part D claims for 544 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Ketoconazole388 claims
- Clobetasol Propionate182 claims
- Triamcinolone Acetonide139 claims
- Fluorouracil87 claims
- Hydrocortisone86 claims
- Minoxidil47 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 73.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Green Mountain Dermatology PLLCPlattsburgh, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Margaret Spencer Johnston among 29 dermatology physician records in Vermont
Margaret Spencer Johnston is one of 29 dermatology physician records with a practice address in Vermont. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 83% of them.
- NPI issued2019 · 83% of these records are older, 7% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 86% of these records are
- Graduated2019 · median 2009 among the 25 with a school on file
- Record last updated2025 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a Vermont practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
4 dermatology physician records list a practice address in Colchester
They are 4 of the 472 NPPES records with a practice address in Colchester, and 29 dermatology physician records in Vermont.
All 29 in Vermont → Every provider in Colchester → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Anita Goodrich, MDColchester, VT 054461356444509
- Maria McGowanColchester, VT 054461699023499
- Steven Partilo, M.D.Colchester, VT 054461326016742
- Rachel Kornik, M.D.Saint Albans, VT 054781063689727
- Julie Lin, MDSaint Albans, VT 054781063572907
- Stephanie Neider, M.D.St Albans, VT 054781386678381
- Kathy Cook, M.D.South Burlington, VT 054031316034093
- Laura McGevna, M.D.South Burlington, VT 054031730322306
Common questions
What is Margaret Spencer Johnston's NPI number?
Margaret Spencer Johnston's National Provider Identifier (NPI) is 1669932406, issued on Mar 20, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Margaret Spencer Johnston located?
The NPPES record lists a practice address at 354 Mountain View Dr Ste 300, Colchester, VT, 05446. Phone: (802) 864-0192. Providers update this record themselves, so call before visiting.
How can I verify Margaret Spencer Johnston's license?
NPPES lists Vermont license number 042.0017627, as entered by the provider. Search the Vermont Board of Medical Practice at https://www.healthvermont.gov/systems/board-medical-practice. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Margaret Spencer Johnston prescribe under Medicare Part D?
In 2024, Margaret Spencer Johnston had 1,381 Medicare Part D claims for 544 beneficiaries; the average among dermatology physician prescribers was 797. Part D covers Medicare prescriptions only.
What is Margaret Spencer Johnston's MIPS final score?
The 2023 MIPS final score is 73.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.