DR. KAREN LYNN SADLER (M.D.) – Pediatrics Physician, NPI 1396726543
Pediatrics Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,245 PEDIATRIC MEDICINE in MA
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Provider Addresses for DR. KAREN LYNN SADLER (M.D.)
11, Wakeland Road, Dover, Norfolk County, Massachusetts, 02482, United States
DOVER, MA 020302056
Phone:
Type: Mailing
MetroWest Medical Center: Framingham Union Hospital, 115, Lincoln Street, Framingham, Middlesex County, Massachusetts, 01702, United States
METROWEST MEDICAL CENTER
FRAMINGHAM, MA 017026358
Phone: (508) 383-1574
Type: Location
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: 2003-12-05
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 |
|---|---|---|---|---|
| I20031205000111 | I | Pediatric Medicine | 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 02030)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| G A S T R O E N T E R O L O G Y | MA | |
| P A T H O L O G Y | PA | |
| Diagnostic Radiology | MA | |
| Nephrology, Internal Medicine | MA | |
| P A T H O L O G Y | MA | |
| P S Y C H I A T R Y | MA | |
| Cardiac Electrophysiology, Internal Medicine, Cardiovascular Disease (Cardiology) | MA | |
| H E M A T O L O G Y/ O N C O L O G Y | MA | |
| N E U R O L O G Y | MA | |
| P A T H O L O G Y | TX |
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