MICHAEL O BRIEN (CRNA) – Certified Registered Nurse Anesthetist, NPI 1437168838
Certified Registered Nurse Anesthetist
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
792 CERTIFIED REGISTERED NURSE ANESTHETIST (CRNA) in CT
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Provider Addresses for MICHAEL O BRIEN (CRNA)
Bridgeport Hospital, 267, Grant Street, Historic East Side, Bridgeport, Fairfield County, Connecticut, 06610, United States
BRIDGEPORT ANESTHESIA ASSOCIATES, PC
BRIDGEPORT, CT 066102805
Phone: (203) 384-3072
Type: Location
La Fortuna Bar & Restaurant, 7365, Main Street, Oronoque, Stratford, Fairfield County, Connecticut, 06614, United States
SUITE 310
STRATFORD, CT 066141300
Phone: (203) 384-3174
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 7 Open Payments records for all available years, with a total value of $163.
Total Amount is formed as General ($163) + Research ($0) + Ownership ($0) = $163.
Last reported payment date: 2024-07-29 • Largest payer in this snapshot: Merck Sharp & Dohme LLC ($107).
Total Amount
$163
General + Research + Ownership
Payments
7
Total payment records
General Amount
$163
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-07-29
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Merck Sharp & Dohme LLC | $107 |
| Mylan Specialty L.P. | $36 |
| Takeda Pharmaceuticals U.S.A., Inc. | $20 |
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: 2006-10-04
PECOS data refreshed: 2026-06-15
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 |
|---|---|---|---|---|
| I20061004000459 | I | Certified Registered Nurse Anesthetist (Crna) | CT | 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 |
|---|---|---|---|---|
| 00142 | Anesthesia for lens surgery | 25 | 23 | $0 |
| 00811 | Anesthesia for other procedure on large bowel using an endoscope | 20 | 20 | $0 |
| 00812 | Anesthesia for exam of colon using an endoscope | 11 | 11 | $0 |
Insurance plans in this area (ZIP 06610)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| CERTIFIED REGISTERED NURSE ANESTHET | CT | 01402 | Anesthesia for open or endoscopic total knee joint replacement | 20 | 19 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Certified Registered Nurse Anesthetist (Crna) | CT | |
| Certified Registered Nurse Anesthetist (Crna) | CT | |
| Certified Registered Nurse Anesthetist (Crna) | CT | |
| Pain Management, Anesthesiology | MA | |
| A N E S T H E S I O L O G Y | CT | |
| Certified Registered Nurse Anesthetist (Crna) | CT | |
| Certified Registered Nurse Anesthetist (Crna) | CT | |
| Certified Registered Nurse Anesthetist (Crna) | CT | |
| A N E S T H E S I O L O G Y | CT | |
| A N E S T H E S I O L O G Y | CT |
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