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

Walter Douglas Williamson, RN, CRNA

Individual provider Registered Nurse · NPI 1477691939

Walter Douglas Williamson, RN, CRNA is a Registered Nurse in North Chicago, Illinois. Practices as a sole proprietor. Licensed in California and Wisconsin.

Licensed in
CA, WI
In the registry since
2007
Specialties on file
4
What do these letters mean?
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.
CRNA — Certified Registered Nurse Anesthetist
An advanced practice nurse who administers anaesthesia.

See every abbreviation used in this directory →

Practice location Address checks out

3001 Green Bay Rd
North Chicago, IL 60064
Phone: (847) 688-1900
Show map & directions

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

Specialties & licences

Certified Registered Nurse Anesthetist (primary) Taxonomy 367500000X · Licence 8093-33 (WI)
Registered Nurse Taxonomy 163W00000X · Licence 669610 (CA)
Registered Nurse Taxonomy 163W00000X · Licence 129682 (WI)
Certified Registered Nurse Anesthetist Taxonomy 367500000X · Licence 4418 (CA)

Record details

NPI number1477691939
Entity typeIndividual (Type 1)
GenderMale
Credentials RN , CRNA
Sole proprietorYes
NPI enumeratedFebruary 4, 2007
Last updated in NPPESSeptember 4, 2018

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