Individual Healthcare Provider
Hieu Trung Nguyen
Provider's NPPES record last updated: January 8, 2026
Overview
- Entity Type
- Individual Healthcare Provider
- NPI
- 1891444725
- Primary Specialty
- Psychiatry & Neurology — Psychiatry
- Practice Location
- Ladera Ranch, California
- Sole Proprietor
- No
Federal Screening
NPISignal checked this NPI against federal exclusion sources. Results below are based on the NPI number itself — an identifier match, not a name match.
List of Excluded Individuals/Entities (LEIE)
HHS Office of Inspector General
No potential match was identified in NPISignal's indexed List of Excluded Individuals/Entities (LEIE) records as of 2026-09-10.
- Source data
- September 10, 2026
- Records indexed
- 84,001
- Screened
- Sep 18, 2026, 1:39 PM UTC
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
SAM.gov Exclusions
U.S. General Services Administration
SAM.gov Exclusions was not checked.
SAM.gov screening is not configured on this deployment. No SAM check has been performed.
- Screened
- Not checked
This is an NPI-based check only. NPISignal does not publish name-based exclusion matches on a provider profile. A shared or similar name is a lead that requires human review, not an identification, and this page is not the place to make one. Run a name-based screening below to see potential matches with the reasons for each.
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
Searches OIG LEIE and SAM.gov by name and reviews every potential match.
Specialties & Taxonomies
- Primary
Psychiatry & Neurology
Psychiatry
Allopathic & Osteopathic Physicians
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
Taxonomy code 2084P0800X Student in an Organized Health Care Education/Training Program
Student, Health Care
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
Taxonomy code 390200000X
Provider-Reported License Information
- Psychiatry & Neurology (California)
- A206241
- Psychiatry & Neurology (Washington)
- MD61588870
Practice Locations
Practice Location
333 Corporate Dr Ste 260
Ladera Ranch, California 92694-2180
Phone: (949) 768-2988
Additional Practice Location
6400 Southcenter Blvd
Tukwila, Washington 98188-2547
Phone: (206) 901-2000
Fax: (206) 901-2010
Additional Practice Location
1959 Ne Pacific St # 356560
Seattle, Washington 98195-3321
Phone: (206) 543-4292
Record Information
- Enumeration Date
- March 18, 2022
- Provider's NPPES Record Last Updated
- January 8, 2026
- Certification Date
- January 8, 2026
- NPISignal NPPES Dataset
- August 2026
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