John Walker, PSYD
Psychologist · Phoenix, AZ
John Walker, PSYD is a psychologist with a practice address in Phoenix, Arizona, and NPI 1871634485, issued on Feb 8, 2007. Check the license (Arizona 3593, as entered in NPPES) with the Arizona board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John Walker
- Credential
- PSYD
- Primary taxonomy
- Psychologist 103T00000X
- License number
- 3593 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 3550 N Central Ave, Phoenix, AZ 85012
- Phone
- (602) 216-6900
- Enumerated
- Feb 8, 2007
- Record last updated
- Oct 17, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (602) 371-9889
- Medicare enrollment
- Enrolled (PECOS I20080612000376); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest psychologist records → All 723 in Arizona → Look up another NPI →
Also registered at 3550 N Central Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Penny Alvarez, LMT LICENSED MASSAGEMassage Therapist1699964833
Verify John Walker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Arizona board licenses this profession
Search for license 3593Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Desert Vista Neuropsychological Specialists PLLCPhoenix, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Walker among 723 psychologist records in Arizona
John Walker, PSYD is one of 723 psychologist records with a practice address in Arizona. 7% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 25% of them.
- NPI issued2007 · 25% of these records are older, 53% newer
- In a Medicare fileYes · 7% of these records are
- In the CMS Doctors and Clinicians fileYes · 16% of these records are
- Graduated2002 · median 2002 among the 117 with a school on file
- Record last updated2018 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103T00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychologist providers in Arizona
There are 723 psychologist records in Arizona.
All 723 in Arizona → Every provider in Phoenix → Psychologist nationwide →
The 8 psychologist records with the nearest ZIP codes
- T. Barratt, PH.D.Phoenix, AZ 850121982097614
- Maryann Latus, PH.D.Phoenix, AZ 850121750456877
- Lynette Livesay, PSYDPhoenix, AZ 850121972819688
- Brandi Luedtke, PSYDPhoenix, AZ 850121215249701
- Brian McDonald, PSYDPhoenix, AZ 850121003227257
- Jason Netland, PH.D.Phoenix, AZ 850121558699165
- Christopher Ogle, PSY.D.Phoenix, AZ 850121255737102
- Rosalia Pereyra, PSYDPhoenix, AZ 850121396756490
Common questions
What is John Walker, PSYD's NPI number?
John Walker, PSYD's National Provider Identifier (NPI) is 1871634485, issued on Feb 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John Walker, PSYD located?
The NPPES record lists a practice address at 3550 N Central Ave, Phoenix, AZ, 85012. Phone: (602) 216-6900. Providers update this record themselves, so call before visiting.
How can I verify John Walker, PSYD's license?
NPPES lists Arizona license number 3593, as entered by the provider. Search the Arizona board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.