MR. DANIEL PATRICK O'BRIEN (PA-C) – Emergency Medicine Physician, NPI 1689284366
Emergency Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
5,093 PHYSICIAN ASSISTANT in MA
Provider Addresses for MR. DANIEL PATRICK O'BRIEN (PA-C)
9 WATKINS LN
SOUTHBOROUGH, MA 017722072
Phone: (508) 612-1567
Type: Mailing
8 CIRRUS DR APT 8103
ASHLAND, MA 017214458
Phone: (508) 612-1567
Type: Mailing
129 S Main St
Milford, MA 017573290
Phone: (774) 462-3339
Fax: (508) 381-0204
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $47.
Total Amount is formed as General ($47) + Research ($0) + Ownership ($0) = $47.
Last reported payment date: 2024-07-01 • Largest payer in this snapshot: DENTSPLY IH AB ($47).
Total Amount
$47
General + Research + Ownership
Payments
1
Total payment records
General Amount
$47
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-07-01
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| DENTSPLY IH AB | $47 |
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: 2021-09-07
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 |
|---|---|---|---|---|
| I20210907000736 | I | Physician Assistant | 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 01772)
Loading plans...
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | MA | |
| Physician Assistant | MA | |
| Physician Assistant | MA | |
| Physician Assistant | MA | |
| Orthopedic Surgery | MA | |
| - | MA | |
| - | MA | |
| Nurse Practitioner | MA | |
| Cardiovascular Disease (Cardiology) | MA | |
| Nurse Practitioner | MA |
Reviews
All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.
No reviews yet. Be the first to share your experience — your opinion helps families compare providers.