HOLLY MASON (M.D.,PH.D.) – Dermatology Physician, NPI 1497950182
Dermatology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
744 DERMATOLOGY in MA
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Provider Addresses for HOLLY MASON (M.D.,PH.D.)
307;309;311, Merrimack Street, Lawrence, Essex County, Massachusetts, 01842, United States
LAWRENCE, MA 018431779
Phone: (978) 691-5690
Fax: (978) 691-5693
Type: Mailing
3;5;7;9;13;17;19;21;25, Paradise Road, Salem, Essex County, Massachusetts, 01907-1392, United States
SALEM, MA 019704229
Phone: (978) 691-5690
Fax: (978) 691-5693
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 200 Open Payments records for all available years, with a total value of $4,148.
Total Amount is formed as General ($4,148) + Research ($0) + Ownership ($0) = $4,148.
Last reported payment date: 2024-12-18 • Largest payer in this snapshot: Janssen Biotech, Inc. ($914).
Total Amount
$4,148
General + Research + Ownership
Payments
200
Total payment records
General Amount
$4,148
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-18
Latest reported date
Top Companies
Largest payers in this snapshot
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: 2009-07-01
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
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 |
|---|---|---|---|---|
| I20090701000380 | I | Dermatology | MA | 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 | 1,142 | 202 | $0 |
| 11102 | Biopsy of related skin growth, first growth | 622 | 443 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 544 | 420 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 537 | 431 | $0 |
| 96900 | Application of ultraviolet light to skin | 500 | 14 | $0 |
Insurance plans in this area (ZIP 01843)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Physician Assistant | MA | |
| Nurse Practitioner | NY | |
| D E R M A T O L O G Y | OH | |
| D E R M A T O L O G Y | MA | |
| D E R M A T O L O G Y | MA | |
| D E R M A T O L O G Y | MA | |
| - | MA | |
| Pathology, Dermatology | MA | |
| Nurse Practitioner | MA | |
| D E R M A T O L O G Y | MA |
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