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Licensing & Accreditation

Brookhaven Retreat is Accredited by the Joint Commission on Accreditation of Health Organizations and is licensed by the State of Tennessee Department of Mental Health and Developmental Disabilities.


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We are a private pay treatment center and do not accept any type of insurance. Costs associated with care are the responsibility of the client.

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Medical Mentors

  • Kris Houser, M.D.

    Kris Houser, M.D.

    Dr. Houser has been providing exceptional medical care in East Tennessee since 1992. Dr. Houser earned his Bachelor of Science Degree from Murray State University and then graduated from The University of Louisville School of Medicine in 1987. He completed his residency in psychiatry and went on to a fellowship in Child Psychology at the University of Louisville School of Medicine. Dr. Houser is Board Certified in Adult and Child Psychiatry. Dr. Houser has worked in many clinical settings in the area, both inpatient and outpatient. He has maintained a private practice in Knoxville and has also served as Medical Director at Peninsula Psychiatric Hospital in Louisville, TN. He is a competent and caring physician who feels it is critically important to listen to his patient, in order to give them the best clinical care available.
  • Amir Hussaini, M.D.

    Amir Hussaini, M.D.

    Dr. Amir Hussaini is a Board Certified Psychiatrist. He graduated from the prestigious University of Karachi and attended medical school at Dow Medical College. He completed his residency at East Tennessee State University in Johnson City. Dr. Hussaini brings with him over 15 years of experience in psychiatry. He has extensive experience in treating mood disorders, anxiety disorders, psychotic disorders, personality disorders and other psychiatric disorders.  
  • Jill Wall, PA
    Physician's Assistant

    Jill Wall, PA

    Jill is a native of East Tennessee. She graduated from the University of South Carolina in 2000 with a Bachelor’s of Science. She graduated in 2004 with her Master’s in Medicine. Jill has 11 years of experience in emergency medicine. She is compassionate in her work, in caring for women’s physical wellbeing. In her spare time, Jill spends time with her family and travels.
  • Kellie Lucas, PAC
    Physician's Assistant

    Kellie Lucas, PAC

  • Carol Marshall RN, PNP
    Nurse Practitioner

    Carol Marshall RN, PNP

    Carol Marshall is a psychiatric nurse practitioner with 23 years of experience in the field of mental health. She specializes in co-occurring disorders. Carol lives in Knoxville with her husband, where she enjoys her grandchildren and working with horse related activities.