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

Joseph W Hassler, CRNA

Individual provider Certified Registered Nurse Anesthetist · NPI 1881932960

Joseph W Hassler, CRNA is a Certified Registered Nurse Anesthetist (CRNA) in Washington, Missouri. Qualified in 2007, 19 years ago. Practices with Western Anesthesiology Associates Inc, a 254-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
19
Licensed in
MO
In the registry since
2013
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

901 E 5th St
Washington, MO 63090-3127
Phone: (636) 239-8000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 751 Sappington Bridge Rd, Sullivan, MO 63080-2354 — (573) 468-1343

Specialties & licences

Certified Registered Nurse Anesthetist (primary) Taxonomy 367500000X · Licence 2013001823 (MO)

Record details

NPI number1881932960
Entity typeIndividual (Type 1)
GenderMale
Credentials CRNA
Sole proprietorNo
NPI enumeratedJanuary 23, 2013
Last updated in NPPESNovember 5, 2021
Certification dateNovember 5, 2021

Medicare enrollment

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

Medicare specialtyCERTIFIED REGISTERED NURSE ANESTHETIST (CRNA)
Medical schoolOTHER
Graduated 2007 (19 years in practice)
Group practice Western Anesthesiology Associates Inc — 254 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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