Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Allison Flexner, CRNA

Individual provider Registered Nurse · NPI 1508833716

Allison Flexner, CRNA is registered under Certified Registered Nurse Anesthetist (CRNA) in Seattle, Washington. Qualified in 2005, 21 years ago. Practices with The Association of University Physicians, a 3,459-clinician group and accepts Medicare assignment. Licensed in New York and Washington.

Years since qualifying
21
Licensed in
NY, WA
In the registry since
2006
Specialties on file
3
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

1959 NE Pacific St
Seattle, WA 98195-0001 Not confirmed with CMS for 13 years — call before visiting
Phone: (206) 598-8920
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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 AP60164887 (WA)
Registered Nurse Taxonomy 163W00000X · Licence 534934 (NY)
Registered Nurse Taxonomy 163W00000X · Licence RN60164088 (WA)

Record details

NPI number1508833716
Entity typeIndividual (Type 1)
GenderFemale
Credentials CRNA
Sole proprietorNo
NPI enumeratedMarch 7, 2006
Last updated in NPPESAugust 12, 2013

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 The Association Of University Physicians — 3459 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 patients18
Services billed 19 a service is one billed item, such as a visit, a test or a procedure
Average patient age70

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 The Association of University Physicians

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 3459 clinicians in the practice; 12 are shown here.

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