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

MS. Ann Katherine Speiser, CRNA

Individual provider Certified Registered Nurse Anesthetist · NPI 1710949763

MS. Ann Katherine Speiser, CRNA is registered under Certified Registered Nurse Anesthetist (CRNA) in Saint Louis, Missouri. Qualified in 2001, 25 years ago. Practices with Northstar Anesthesia of Illinois, LLC, a 406-clinician group and accepts Medicare assignment. Licensed in Illinois and Missouri.

Years since qualifying
25
Licensed in
IL, MO
In the registry since
2006
Specialties on file
2
What do these letters mean?
CRNA — Certified Registered Nurse Anesthetist
An advanced practice nurse who administers anaesthesia.

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Practice location Address checks out

1 Barnes Jewish Hospital Plz
Saint Louis, MO 63110-1003
Phone: (314) 362-6973
Fax: (314) 362-1185
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Certified Registered Nurse Anesthetist (primary) Taxonomy 367500000X · Licence 209005125 (IL)
Certified Registered Nurse Anesthetist Taxonomy 367500000X · Licence 132722 (MO)

Record details

NPI number1710949763
Entity typeIndividual (Type 1)
GenderFemale
Credentials CRNA
Sole proprietorNo
NPI enumeratedApril 5, 2006
Last updated in NPPESNovember 10, 2023
Certification dateNovember 10, 2023

Medicare enrollment

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

Medicare specialtyCERTIFIED REGISTERED NURSE ANESTHETIST (CRNA)
Medical schoolOTHER
Graduated 2001 (25 years in practice)
Group practice Northstar Anesthesia Of Illinois, Llc — 406 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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 patients73
Services billed 73 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

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.

Colleagues at Northstar Anesthesia of Illinois, LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 406 clinicians in the practice; 12 are shown here.

Other providers in Saint Louis