Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Donald M Nockleby, PHD

Clinical Neuropsychologist in Phoenix, AZ · enumerated 2007.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1629299367

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Registry record

Entity type Individual (Type 1)

Name Donald M Nockleby

Credential PHD

Sex Male

Practice address Phoenix, AZ, 85016

Phone (602) 271-6165

Enumeration date May 1, 2007

Last updated in NPPES Apr 23, 2012

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

103G00000X Clinical Neuropsychologist Behavioral Health & Social Service Providers · License 1583 (AZ) Primary

103G00000X Clinical Neuropsychologist Behavioral Health & Social Service Providers · License 33310 (TX) Secondary

103G00000X Clinical Neuropsychologist Behavioral Health & Social Service Providers · License 178 (MT) Secondary

103TA0700X Adult Development & Aging Psychologist Behavioral Health & Social Service Providers · License 1583 (AZ) Secondary

103TA0700X Adult Development & Aging Psychologist Behavioral Health & Social Service Providers · License 33310 (TX) Secondary

103TA0700X Adult Development & Aging Psychologist Behavioral Health & Social Service Providers · License 178 (MT) Secondary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1629299367 active?

Yes, as of the latest NPPES snapshot, NPI 1629299367 is active (record last updated 2012-04-23).

How do I verify Donald Nockleby's NPI record?

Cross-check NPI 1629299367 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-04-23.