NPI Portal NPI Lookup & Verification

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

Mark Mcdonough, PH.D.

Clinical Neuropsychologist in Encinitas, CA · enumerated 2007.

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

National Provider Identifier

1427171412

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Mark Mcdonough
Credential PH.D.
Sex Male
Practice address Encinitas, CA, 92024
Phone (760) 944-9647
Fax (760) 944-7491
Enumeration date Apr 6, 2007
Last updated in NPPES Nov 26, 2019

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 PSY 16390 (CA) Primary
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

How do I verify Mark Mcdonough's NPI record?
Cross-check NPI 1427171412 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1427171412 active?
Yes, as of the latest NPPES snapshot, NPI 1427171412 is active (record last updated 2019-11-26).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-11-26.