Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Joanna Mendoza
Psychologist in Concord, CA · enumerated 2015.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1477920494
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Registry record
Entity type Individual (Type 1)
Name Joanna Mendoza
Sex Female
Practice address 2425 Bisso Ln, Suite 200, Concord, CA, 94520
Phone (925) 642-1141
Enumeration date Aug 25, 2015
Last updated in NPPES Jan 3, 2022
Taxonomy & licenses
390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary
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.
Frequently asked questions
What specialty is Joanna Mendoza?
Joanna Mendoza is registered in NPPES with the primary taxonomy of Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
Browse all → Albert Fam Clinical Social Worker · Concord, CA NPI 1891798195 Jimmy Jun Clinical Social Worker · Concord, CA NPI 1306896188 Indra Singh Psychiatry Physician · Concord, CA NPI 1629173620 Contra Costa County Adolescent and Children Mental Health Clinic/Center · Concord, CA NPI 1306923446 Contra Costa County Adolescent and Children Mental Health Clinic/Center · Concord, CA NPI 1881772192 Robin Asher Child & Adolescent Psychiatry Physician · Concord, CA NPI 1841379971 Contra Costa County Adolescent and Children Mental Health Clinic/Center · Concord, CA NPI 1356413710 Jon Whalen Child & Adolescent Psychiatry Physician · Concord, CA NPI 1669545786
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-01-03.