Theresa Toquyen Nguyen, DO
Theresa Toquyen Nguyen is a Child & Adolescent Psychiatry specialist based in Tustin, CA with over 16 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Theresa Toquyen Nguyen, DO has practiced psychiatry & neurology for 16+ years, working in group practice. She has been practicing since 2010 — over 16 years. Child & Adolescent Psychiatry is a subspecialty of psychiatry with additional skills and training in the diagnosis and treatment of developm...
At a glance
- Uses generic medications more than 28% of reporting doctors in California
- Virtual visits available — no app or travel required
Older · 1107dNPPES updated 2023-06-28 · verify NPI on CMS · Verify license at Medical Board of California
Patient Reviews
No patient reviews yet. If you've seen Theresa Toquyen Nguyen, your feedback helps other patients.
Review PolicyAll feedback is moderated before publishing. We verify reviewer identity where possible and enforce a one-review-per-provider policy. Full guidelines →
Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Board certified · Jun 27, 2023
Self-reported via NPPES
16 years in practice
Experienced
Child & Adolescent Psychiatry is a subspecialty of psychiatry with additional skills and training in the diagnosis and treatment of developmental, behavioral, emotional, and mental disorders of childhood and adolescence.
Taxonomy: 2084P0804X
Mailing address
One Hospital Drive Dc018.00, Columbia, MO 65202
Differs from practice location
Virtual Child & Adolescent Psychiatry Care With Theresa Toquyen Nguyen
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Theresa Toquyen Nguyen for follow-ups, medication reviews, and ongoing care — no travel to Tustin required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.
Frequently Asked Questions
Common questions about Theresa Toquyen Nguyen
NPI records show Dr. Nguyen as active with telehealth listed in Tustin, CA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (925) 997-9093.
Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D. See Data Methodology.
Is this your profile?
Verify credentials, update practice details, and manage telehealth.
Medical Disclaimer: NPI Telehealth is a provider directory for informational purposes only. This page does not constitute medical advice, diagnosis, or treatment recommendations. Provider data is sourced from the CMS NPPES federal registry and public Medicare datasets. NPI Telehealth does not verify clinical qualifications beyond federal records. Data may not reflect real-time availability — always contact the provider's office directly to confirm details before seeking care.
Contact Theresa Toquyen Nguyen
Practice Location
15405 Lansdowne Rd, Tustin, CA 92782
Mailing Address
One Hospital Drive Dc018.00, Columbia, MO 65202
This is a provider directory. Contact the office directly to schedule appointments.
Related Providers
Child & Adolescent Psychiatry in California
See allRichard J. Levy, M.D.
Burlingame, CA
Asya Kupisk, MD
Los Angeles, CA
Melvin Monroe Sigman, M.D.
Los Angeles, CA