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austin psychiatrist

Constance E. George, M.D.

Dr Constance George hails from Milwaukee, Wisconsin. She obtained her medical degree from the Medical College of Wisconsin and completed her residency training in psychiatry at the Medical University of South Carolina... >> Learn more

austin psychiatrist

Mouna G. Sfeir, M.D.

Dr. Mouna Sfeir practices Adult Psychiatry. She is Board Certified in Psychiatry by the American Board of Psychiatry and Neurology, and is a Diplomate of the American Board of Addiction Medicine.... >> Learn more

Nienke Gul, APRN, PMHNP-BC


Nienke (Nina) Gul graduated from the University of Texas as a board certified Psychiatric Mental Health Nurse Practitioner (PMHNP).  She has prescriptive authority and is licensed to perform psychiatric evaluations, medication management and psychotherapy.  She has been in private practice since 2015.


Nina primarily works with adults treating a wide variety of psychiatric disorders. Her approach to mental health care is holistic and she views treatment planning as a continuous process which she undertakes in collaboration with clients and, if desired, their families.  Her previous work experience includes critical care nursing as well as clinical research.  


Nina enjoys the outdoors and you might see her biking or hiking around the greater Austin area with her husband and children in tow. Nina welcomes people of all backgrounds and will work with each client individually to achieve the best outcomes.


The small print:

  • Nina sees patients by telemedicine appointment.  In-person visits will be scheduled (once or twice yearly) in accordance with State rules and regulations.

  • Questionnaires can be used to screen for ADHD/ADD but a definitive diagnosis requires psychological testing.  Patients who do not already have test results on file will need to have this completed.

  • Insurance accepted: BCBS, UHC, Cigna, Aetna. 

  • Currently accepting new patients.


Michelle Marshall, APRN, PMHNP-BC

Michelle is originally from upstate NY and moved to Austin in 2010. She earned her Registered Nursing degree in 2003 and has worked in a variety of settings where she found her passion... >> Learn more


Maria Medina


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