Portneuf Behavioral Health Services

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Kathleen A Erwin, MD

Kathleen A Erwin, MD

Specialties & Interests

Board Certified: Psychiatry

Education & Training
  • Residency: UCSD Medical Center , 2008
  • Medical School: University of California San Diego School of Medicine , 2004
Theresa L Ross, PhD

Theresa L Ross, PhD

Dr. Ross graduated with the inaugural class in Clinical Psychology at Idaho State University in 2001, after many years working as a Speech Pathologist in Physical Rehabilitation; she also worked in administration in Physical Rehab as well as Hospital Clinical Services at Pocatello Regional Medical Center. After over 10 years in private practice in Pocatello, Dr. Ross joined the PMC Behavioral Health Clinic in September of 2013.

Dr. Ross currently completes neuropsychological evaluations with patients who have experienced traumatic brain injury, stroke and other brain disorders, as well as older adults with memory problems. She also provides behavioral treatment of chronic headaches, sleep disorders, and chronic pain.

Dr. Ross also provides psychological services to patients of the Weight Management Institute/Bariatrics Program, as well as evaluation and treatment of eating disorders such as anorexia and bulimia. She provides consults with inpatients of Portneuf Medical Center to aid with their recovery from a behavioral/psychological perspective. While she tailors her approach to fit the needs and desires of each patient, Dr. Ross’ primarily utilizes cognitive-behavioral strategies, mindfulness, exposure, and biofeedback-assisted relaxation.

In her spare time, Dr. Ross enjoys spending time with her family, refinishing antique furniture, exploring exotic places and hiking the Idaho mountains.

Dawn E. Smith

Dawn E. Smith


Dawn earned her bachelors in social work from Idaho State University and her masters in social work from Boise State University. She worked in different areas of social work including domestic violence, substance abuse, adult mental health, and with the elderly and disabled. She has worked at Portneuf Medical Center since 2010 as a Behavioral Health Therapist in the inpatient unit and Emergency Department. She has experience working with acute mental health crises as well as chronic symptoms of mental illness.

Dawn has been trained in DBT, a form of Cognitive Behavioral Therapy which encourages using skill based techniques to manage emotions while moving through the process of acceptance and change. She is a generalist by education and utilizes all theories of practice in her work with clients. Dawn believes people are the experts of their own lives, and a therapist’s role is to validate people’s emotional experiences and empower them to recognize their strengths to build a more fulfilling and satisfying life.

Dawn enjoys spending time with her family, hiking, dancing, and traveling.