Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Michelle Kieu Nguyen
Behavior Technician in Tustin, CA · enumerated 2022.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1861135121
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Registry record
Entity type Individual (Type 1)
Name Michelle Kieu Nguyen
Sex Female
Practice address 290 S Prospect Ave Ste A, Tustin, CA, 92780
Phone (415) 646-6223
Enumeration date Apr 15, 2022
Last updated in NPPES Apr 15, 2022
Taxonomy & licenses
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
Is NPI 1861135121 active?
Yes, as of the latest NPPES snapshot, NPI 1861135121 is active (record last updated 2022-04-15).
How do I verify Michelle Nguyen's NPI record?
Cross-check NPI 1861135121 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → Jennifer Jaeger Behavior Analyst · Tustin, CA NPI 1275090342 Ana Campos Behavior Technician · Tustin, CA NPI 1831749092 Wakana Seo Behavior Technician · Tustin, CA NPI 1841838695 Mariely Godoy Behavior Technician · Tustin, CA NPI 1558962837 Elizabeth Liem Behavior Technician · Tustin, CA NPI 1790457109 Ernesto Cortes Behavior Technician · Tustin, CA NPI 1336882810 Emilie Kovalik Behavior Technician · Tustin, CA NPI 1174266761 Karen Pena Behavior Technician · Tustin, CA NPI 1285310961
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-04-15.