MS. KAREN ANNE SOMMER (NP) – Adult Health Nurse Practitioner, NPI 1932143591
Adult Health Nurse Practitioner
Main info
Profile Insights
NPPES metrics only — not quality of care.
Provider Addresses for MS. KAREN ANNE SOMMER (NP)
450 BROOKLINE AVE # DANA1217
DANA-FARBER CANCER INSTITUTE
BOSTON, MA 022155418
Phone: (617) 632-5319
Type: Location
21, Walnut Terrace, Arlington, Middlesex County, Massachusetts, 02476, United States
ARLINGTON, MA 024766118
Phone: (781) 646-2362
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $100.
Total Amount is formed as General ($100) + Research ($0) + Ownership ($0) = $100.
Last reported payment date: 2023-06-22 • Largest payer in this snapshot: Bayer Healthcare Pharmaceuticals Inc. ($100).
Total Amount
$100
General + Research + Ownership
Payments
1
Total payment records
General Amount
$100
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-06-22
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Bayer Healthcare Pharmaceuticals Inc. | $100 |
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: 2011-01-30
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 |
|---|---|---|---|---|
| I20110130000002 | I | Nurse Practitioner | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 02215)
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