MS. BRIDGET ANN O'BRIEN (PA) – Physician Assistant, NPI 1144453457
Physician Assistant
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
10,570 PHYSICIAN ASSISTANT in CA
Provider Addresses for MS. BRIDGET ANN O'BRIEN (PA)
4140 W 190TH ST
TORRANCE, CA 905045513
Phone: (310) 423-5874
Fax: (310) 423-0139
Type: Mailing
8700 BEVERLY BLVD
WEST HOLLYWOOD, CA 900481804
Phone: (310) 423-5874
Fax: (310) 423-0139
Type: Location
Lenox Hill Hospital, 100, East 77th Street, Upper East Side, Manhattan Community Board 8, Manhattan, New York County, New York, 10075, United States
LENOX HILL
NEW YORK, NY 100751850
Phone: (212) 434-2000
Type: Location
10, Jones Street, Lakeville Estates, Village of New Hyde Park, Town of North Hempstead, Nassau County, New York, 11040, United States
APT 3C
NEW YORK, NY 100145648
Phone: (616) 514-8659
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 5 Open Payments records for all available years, with a total value of $378.
Total Amount is formed as General ($378) + Research ($0) + Ownership ($0) = $378.
Last reported payment date: 2024-10-31 • Largest payer in this snapshot: E.R. Squibb & Sons, L.L.C. ($228).
Total Amount
$378
General + Research + Ownership
Payments
5
Total payment records
General Amount
$378
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-31
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| E.R. Squibb & Sons, L.L.C. | $228 |
| Arcutis Biotherapeutics, Inc. | $150 |
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: 2025-11-18
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 3 Medicare enrollment records; no due dates published yet.
Enrollment records
3
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 |
|---|---|---|---|---|
| I20180430000893 | I | Physician Assistant | NJ | TBD |
| I20221109000964 | I | Physician Assistant | CA | TBD |
| I20251118000859 | I | Physician Assistant | MI | 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 90504)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| D E R M A T O L O G Y | NY | |
| Physician Assistant | CA | |
| - | NY |
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