ERIN MARY O'BRIEN (FNP-C) – Family Nurse Practitioner, NPI 1225680747
Family Nurse Practitioner
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
8,972 NURSE PRACTITIONER in MA
Provider Addresses for ERIN MARY O'BRIEN (FNP-C)
423 Main St
Rowley, MA 019691207
Phone: (802) 777-5171
Type: Location
423, Main Street, Rowley, Essex County, Massachusetts, 01969-1211, United States
ROWLEY, MA 019691207
Phone:
Type: Mailing
231 SUTTON ST STE 1A
NORTH ANDOVER, MA 018451620
Phone: (978) 655-1042
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: 2025-04-28
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 |
|---|---|---|---|---|
| I20250428002895 | 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 01969)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | MA | |
| Pain Management | MA | |
| Physician Assistant | NH | |
| Nurse Practitioner | MA |
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