Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ms. Cassandra J Willbourn, RN
Registered Nurse in Olympia, WA · enumerated 2017.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1265969612
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Registry record
Entity type Individual (Type 1)
Name Ms. Cassandra J Willbourn
Credential RN
Sex Female
Practice address 905 24th Way Sw Ste A2, Olympia, WA, 98502
Phone (360) 742-5010
Fax (360) 742-5015
Enumeration date May 16, 2017
Last updated in NPPES May 16, 2017
Taxonomy & licenses
RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam.
About the RN credential
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What is the NPI number for Cassandra Willbourn?
The National Provider Identifier (NPI) for Cassandra Willbourn is 1265969612, a Type 1 (individual) record in the CMS NPPES registry.
Where does Cassandra Willbourn practice?
The practice location on file with NPPES is in Olympia, WA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-05-16.