Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Sonja Williamson
Specialist in Goodyear, AZ · enumerated 2016.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1366893075
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Registry record
Entity type Individual (Type 1)
Name Sonja Williamson
Sex Female
Practice address 576 S 167th Ln, Goodyear, AZ, 85338
Phone (602) 810-2099
Enumeration date Jun 23, 2016
Last updated in NPPES Jun 27, 2023
Taxonomy & licenses
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
Where does Sonja Williamson practice?
The practice location on file with NPPES is in Goodyear, AZ. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Sonja Williamson?
The National Provider Identifier (NPI) for Sonja Williamson is 1366893075, a Type 1 (individual) record in the CMS NPPES registry.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-06-27.