MARGARET SPENCER JOHNSTON – Dermatology Physician, NPI 1669932406
Dermatology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
270 DERMATOLOGY in CT
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Provider Addresses for MARGARET SPENCER JOHNSTON
Yale New Haven Hospital, 20, York Street, Downtown, New Haven, New Haven County, Connecticut, 06510, United States
TOMPKINS 226
NEW HAVEN, CT 065103220
Phone: (203) 688-4242
Type: Mailing
354 MOUNTAIN VIEW DR STE 300
COLCHESTER, VT 054465988
Phone: (802) 864-0192
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2025-11-06
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20240426000981 | I | Dermatology | VT | TBD |
| I20251106003074 | I | Dermatology | NY | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 17003 | Destruction of precancer skin growth, 2-14 growths | 156 | 30 | $0 |
| 11102 | Biopsy of related skin growth, first growth | 69 | 63 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 57 | 49 | $0 |
| 17000 | Destruction of precancer skin growth, 1 growth | 47 | 41 | $0 |
| 99203 | New patient office or other outpatient visit, 30-44 minutes | 45 | 45 | $0 |
Insurance plans in this area (ZIP 06510)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| D E R M A T O L O G Y | VT | |
| Physician Assistant | VT | |
| Physician Assistant | VT | |
| D E R M A T O L O G Y | VT | |
| D E R M A T O L O G Y | NY | |
| D E R M A T O L O G Y | FL | |
| Nurse Practitioner | VT | |
| D E R M A T O L O G Y | GA | |
| Physician Assistant | VT | |
| Physician Assistant | VT |
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