Board Certified Psychiatrist


Dr. Diane Nguyen provides comprehensive psychiatric services to adults which includes new psychiatric evaluation, medication counseling, prescription management, supportive and educational counseling. The practice is located in Lakeway Texas, on the west side of Austin, Texas. Office hours are Monday through Friday and by appointments only.  

Established patients may request appointments and other inquiries by messaging through your patient portal. The portal link is: 





Dr. Nguyen obtained her medical degree at the University of North Texas Osteopathic Medical School in 2002. Afterward, she pursued specialization in the field of psychiatry at the University of Texas in San Antonio psychiatry residency program and an additional fellowship in geriatric psychiatry. She has been board certified and is a diplomate of the American Board of Psychiatry and Neurology since 2007 and maintains active status. Dr. Nguyen has also attained special certification to provide buprenorphine treatment for opiate dependency. Dr. Nguyen has been in private practice in Lakeway since 2008. From 2008 to 2020 she also served as the consulting psychiatrist to Gary Job Corp training center where she provided collaborative mental health services for people ages 16 to 24 with a mental health team that included psychologist, social workers, and substance use counselors. From 2015 to 2020 she served as a University of Texas Austin adjunct clinical affiliate and preceptor for Advance Psychiatric Nurse Practitioner students,  providing clinical teaching guidance and mentorship for future advance psychiatric nurse practitioners.  She currently provides supervision for Advance Psychiatric Nurse Practitioner at Gulf Coast Center Behavioral Health.



Thank you to all my patients for the opportunity to serve you in the wonderful Lakeway and Austin community for over fifteen years! I am fully committed in providing compassionate and individualized treatment of each person. My approach is focused on collaboration with each individual to formulate patient treatment goals specific to that person. I  take consideration to the whole individual, including: age, life style, nutrition, sleep, physical health, gender, spiritually, environmental circumstances, and life events in each evaluation because they are all interconnected and influence one's mental health. Each new psychiatric evaluation identifies and incorporates the biological, psychological, social, and spiritual aspects of each patient into the plan of care. I also welcome those with addiction tendencies, promoting greater support and healthier coping strategies and self care.  I will strive to make communication easy and unencumbered to each patient who comes in for treatment. Thank you again for all of my patients who have allowed me to be part of their life because as I try to help each of you, I fully appreciate how much I grow personally by the lives of others as well!  

Insurance Accepted:  BlueCross BlueShield, Aetna, Cigna, United Behavioral Health, Compsych