CAITLYN ELIZABETH O'BRIEN (FNP-BC) – Family Nurse Practitioner, NPI 1962100446
Family Nurse Practitioner
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
8,971 NURSE PRACTITIONER in MA
Provider Addresses for CAITLYN ELIZABETH O'BRIEN (FNP-BC)
79 Erdman Way Ste 101
Leominster, MA 014531805
Phone: (978) 537-4805
Fax: (978) 537-2185
Type: Location
2 BRENTWOOD AVE
WILMINGTON, MA 018873461
Phone: (781) 835-8784
Type: Mailing
3 WOODLAND RD STE 217
STONEHAM, MA 021801711
Phone: (781) 395-2922
Fax: (781) 393-8905
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 238 Open Payments records for all available years, with a total value of $4,961.
Total Amount is formed as General ($4,961) + Research ($0) + Ownership ($0) = $4,961.
Last reported payment date: 2024-12-19 • Largest payer in this snapshot: AstraZeneca Pharmaceuticals LP ($1,722).
Total Amount
$4,961
General + Research + Ownership
Payments
238
Total payment records
General Amount
$4,961
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-19
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: 2023-05-05
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 |
|---|---|---|---|---|
| I20230505001705 | 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.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 95117 | Professional service for multiple injections of allergen | 65 | 31 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 30 | 27 | $0 |
Insurance plans in this area (ZIP 01453)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Physician Assistant | MA | |
| A L L E R G Y/ I M M U N O L O G Y | MA | |
| A L L E R G Y/ I M M U N O L O G Y | MA | |
| A L L E R G Y/ I M M U N O L O G Y | MA |
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