Patrick O'brien, CRNA
Nurse Anesthetists (CRNA) (Certified Registered Nurse Anesthetist)
- Medicare participating
At a glance
- Years since graduation
- 7
- In the NPI registry since
- 2019
- Medicare patients seen, 2024
- 145
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. What an NPI is
Education and training
- 2019Registered with an NPI (national billing number; not a license date)
Medicare’s Care Compare data doesn’t list this clinician’s medical school. Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Certified Registered Nurse Anesthetist primary
IL license 209019547 -
Registered Nurse
IL license 041437410
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Memorial Hospital Belleville, IL
- Hshs St Elizabeth's Hospital O Fallon, IL
- St Josephs Hospital Breese, IL
Medical groups
- Washington University (3,029 clinicians)
- North American PArtners in Anesthesia Illinois LLC (431 clinicians)
- Midwest Anesthesia Providers Sc (182 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 145
- Services billed
- 146
- Patients’ average age
- 70
| Service | Times | Patients |
|---|---|---|
| Anesthesia for other procedure on urinary system through urethra | 25 | 25 |
| Anesthesia for other procedure on large bowel using an endoscope | 21 | 21 |
| Anesthesia for procedure for total knee joint replacement | 14 | 14 |
| Anesthesia for total hip replacement | 12 | 12 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Payments from drug and device companies
In 2025, 1 companies reported 1 payments worth $15.41 in total to this clinician.
| Karl Storz Endoscopy-america | $15.41 |
|---|
| Food and Beverage | $15.41 |
|---|
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.