Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Lois Walker
Nurse Practitioner in Somerton, AZ · enumerated 2014.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1659788966
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Registry record
Entity type Individual (Type 1)
Name Lois Walker
Sex Female
Practice address 214 W Main St, Somerton, AZ, 85350
Phone (928) 627-1120
Fax (928) 627-8773
Enumeration date Jul 18, 2014
Last updated in NPPES Aug 14, 2024
Taxonomy & licenses
363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License R80468 (AR) Secondary
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License AP9845 (AZ) Primary
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 116399726 | Medicaid | AR | - |
| 205411758 | Medicaid | AR | - |
| 211456002 | Medicaid | AR | - |
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 Lois Walker?
The National Provider Identifier (NPI) for Lois Walker is 1659788966, a Type 1 (individual) record in the CMS NPPES registry.
Where does Lois Walker practice?
The practice location on file with NPPES is in Somerton, AZ. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Jose Munoz Pediatrics Physician · Somerton, AZ NPI 1437134830 Vasu Krishnakumar Psychiatry Physician · Somerton, AZ NPI 1932224763 Stephen Bailey Psychologist · Somerton, AZ NPI 1255578324 Keever Czlapinski Psychologist · Somerton, AZ NPI 1568791119 John Samaan Psychiatry Physician · Somerton, AZ NPI 1225325988 San Luis Walk-in Clinic, Inc. Rural Health Clinic/Center · Somerton, AZ NPI 1972891349 Myriam Villapudua Speech-Language Pathologist · Somerton, AZ NPI 1831479419 Regional Center for Border Health, Inc Mental Health Counselor · Somerton, AZ NPI 1013469014
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-08-14.