Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Duyen Diep
School Counselor in Irvine, CA · enumerated 2020.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1801405949
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Registry record
Entity type Individual (Type 1)
Name Duyen Diep
Sex Female
Practice address 5050 Barranca Pkwy, Irvine, CA, 92604
Phone (949) 936-5000
Enumeration date Jul 24, 2020
Last updated in NPPES Aug 14, 2026
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 1801405949 active?
Yes, as of the latest NPPES snapshot, NPI 1801405949 is active (record last updated 2026-08-14).
How do I verify Duyen Diep's NPI record?
Cross-check NPI 1801405949 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 → Amy Lee Occupational Therapist · Irvine, CA NPI 1033286620 Irvine Unified School District Local Education Agency (LEA) · Irvine, CA NPI 1033275250 Shawnna Burlin-Shore School Counselor · Irvine, CA NPI 1770606337 Brooke Barton Pediatric Physical Therapist · Irvine, CA NPI 1417199753 Christina Kee Marriage & Family Therapist · Irvine, CA NPI 1134431950 Jami Capps School Counselor · Irvine, CA NPI 1124300793 Brianna Carolan Speech-Language Pathologist · Irvine, CA NPI 1609127752 Sarah Truong Occupational Therapist · Irvine, CA NPI 1851738728
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-08-14.