NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ross Nelson, PSY.D.

Clinical Psychologist in Mountain View, CA · enumerated 2009.

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

National Provider Identifier

1831321520

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Ross Nelson
Credential PSY.D.
Sex Male
Practice address 1080a La Avenida St, Mountain View, CA, 94043
Phone (858) 442-6834
Enumeration date Aug 14, 2009
Last updated in NPPES Dec 18, 2015

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License PSY27738 (CA) Primary
PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice. About the PSYD 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 Ross Nelson's NPI record?
Cross-check NPI 1831321520 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1831321520 active?
Yes, as of the latest NPPES snapshot, NPI 1831321520 is active (record last updated 2015-12-18).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-12-18.