Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Esmeralda Diaz, MFT
Mental Health Counselor in Brea, CA · enumerated 2015.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1174996789
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Registry record
Entity type Individual (Type 1)
Name Esmeralda Diaz
Credential MFT
Sex Female
Practice address 265 S Randolph Ave Ste 120, Brea, CA, 92821
Phone (877) 516-0357
Fax (714) 707-4112
Enumeration date Nov 4, 2015
Last updated in NPPES Dec 6, 2021
Taxonomy & licenses
101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License IMF87837 (CA) Secondary
101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License 113878 (CA) Primary
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
Where does Esmeralda Diaz practice?
The practice location on file with NPPES is in Brea, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Esmeralda Diaz?
The National Provider Identifier (NPI) for Esmeralda Diaz is 1174996789, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-06.