MARK O'BRIEN – Certified Registered Nurse Anesthetist, NPI 1124796545
Certified Registered Nurse Anesthetist
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
2,131 CERTIFIED REGISTERED NURSE ANESTHETIST (CRNA) in MN
Provider Addresses for MARK O'BRIEN
11505 39TH AVE N
PLYMOUTH, MN 554411310
Phone: (612) 751-7531
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $50.
Total Amount is formed as General ($50) + Research ($0) + Ownership ($0) = $50.
Last reported payment date: 2024-03-20 • Largest payer in this snapshot: Chiesi USA, Inc. ($50).
Total Amount
$50
General + Research + Ownership
Payments
1
Total payment records
General Amount
$50
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-03-20
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Chiesi USA, Inc. | $50 |
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: 2024-11-14
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20230607002631 | I | Certified Registered Nurse Anesthetist (Crna) | IL | TBD |
| I20241114002348 | I | Certified Registered Nurse Anesthetist (Crna) | MN | 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 55441)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Certified Registered Nurse Anesthetist (Crna) | MN | |
| Certified Registered Nurse Anesthetist (Crna) | MN | |
| Certified Registered Nurse Anesthetist (Crna) | MN | |
| Certified Registered Nurse Anesthetist (Crna) | MN | |
| Certified Registered Nurse Anesthetist (Crna) | MN | |
| Certified Registered Nurse Anesthetist (Crna) | MN | |
| Certified Registered Nurse Anesthetist (Crna) | MN | |
| Certified Registered Nurse Anesthetist (Crna) | MN | |
| Certified Registered Nurse Anesthetist (Crna) | MN | |
| Certified Registered Nurse Anesthetist (Crna) | MN |
Reviews
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