Lois Walker
NPI 1659788966 · Nurse Practitioner · Somerton, AZ
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lois Walker is a Nurse Practitioner provider in Somerton, AZ (NPI 1659788966).
Provider details
- NPI number
- 1659788966
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- No
- License
- R80468 (AR)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
11 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Escitalopram Oxalate | 35 |
| Alprazolam | 33 |
| Clonazepam | 31 |
| Sertraline Hcl | 24 |
| Trazodone Hcl | 24 |
| Quetiapine Fumarate | 22 |
| Venlafaxine Hclbrand: Venlafaxine Hcl Er | 18 |
| Mirtazapine | 17 |
| Hydroxyzine Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-07-18
- Last updated
- 2024-08-14
- Certified
- 2024-08-14
Frequently asked questions
- What is Lois Walker's NPI number?
- Lois Walker's National Provider Identifier (NPI) is 1659788966, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lois Walker's specialty?
- Lois Walker is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Lois Walker located?
- Lois Walker's practice location on file with NPPES is 214 W Main St, Somerton, AZ 85350-6329.
- What is Lois Walker's phone number?
- The practice phone number listed in the NPPES registry for Lois Walker is (928) 627-1120.
- Does Lois Walker accept Medicare?
- Lois Walker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lois Walker's NPI active?
- Yes — Lois Walker's NPI (1659788966) is active in the NPPES registry as of the last update on 2024-08-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.