Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

MS. Kathleen M O'Leary, CRNA

Individual provider Certified Registered Nurse Anesthetist · NPI 1437139532

MS. Kathleen M O'Leary, CRNA is registered under Certified Registered Nurse Anesthetist (CRNA) in Saint Louis, Missouri. Qualified in 2005, 21 years ago. Practices with Western Anesthesiology Associates Inc, a 254-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
21
Licensed in
MO
In the registry since
2006
What do these letters mean?
CRNA — Certified Registered Nurse Anesthetist
An advanced practice nurse who administers anaesthesia.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

1 Barnes Jewish Hospital Plz Dept Anesthesiology
Saint Louis, MO 63110-1003
Phone: (800) 862-9980
Fax: (314) 362-1185
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Certified Registered Nurse Anesthetist (primary) Taxonomy 367500000X · Licence 084732 (MO)

Record details

NPI number1437139532
Entity typeIndividual (Type 1)
GenderFemale
Credentials CRNA
Sole proprietorNo
NPI enumeratedJanuary 17, 2006
Last updated in NPPESApril 17, 2025
Certification dateMarch 7, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCERTIFIED REGISTERED NURSE ANESTHETIST (CRNA)
Medical schoolOTHER
Graduated 2005 (21 years in practice)
Group practice Western Anesthesiology Associates Inc — 254 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients62
Services billed 62 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Mercy Hospital St Louis Hospital · Saint Louis, MO · listed as Mercy Hospitals East Communities Mercy Hospital St Louis

Colleagues at Western Anesthesiology Associates Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 254 clinicians in the practice; 12 are shown here.

Other providers in Saint Louis