John Walker, PSYD
NPI 1871634485 · Psychologist · Phoenix, AZ
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Walker, PSYD is a Psychologist provider in Phoenix, AZ (NPI 1871634485).
Provider details
- NPI number
- 1871634485
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PSYD
- Sex
- Male
- Sole proprietor
- No
- License
- 3593 (AZ)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-02-08
- Last updated
- 2018-10-17
Frequently asked questions
- What is John Walker's NPI number?
- John Walker's National Provider Identifier (NPI) is 1871634485, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Walker's specialty?
- John Walker is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is John Walker located?
- John Walker's practice location on file with NPPES is 3550 N Central Ave, Phoenix, AZ 85012-2112.
- What is John Walker's phone number?
- The practice phone number listed in the NPPES registry for John Walker is (602) 216-6900.
- Does John Walker accept Medicare?
- John Walker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Walker's NPI active?
- Yes — John Walker's NPI (1871634485) is active in the NPPES registry as of the last update on 2018-10-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.