Photo: Cassidy Hartshorn, MSW

Cassidy Hartshorn, MSW

Mental Health

Cassidy Hartshorn, MSW, is a dedicated clinical social worker committed to guiding individuals, families, and couples towards healing and positive transformation at the Mental Health Wellness Center of Catalyst Medical Group, located in Lewiston, Idaho.

Cassidy earned her Bachelor of Science degree in justice studies from Lewis-Clark State College and her Master of Social Work degree from Walla Walla University Wilma Hepker School of Social Work and Sociology in College Place, Washington. She further honed her expertise through a clinical social work internship at Fitzgerald Psychological Services in Clarkston, Washington.

With a focus on strengths, Cassidy tailors treatment using various therapeutic techniques like motivational interviewing, cognitive behavior therapy, dialectical behavior therapy, mindfulness, and acceptance and commitment therapy. Her diverse approach spans individual, child, family, and couples therapy, aiming to empower patients through life's challenges


  • Lewis-Clark State College, Lewiston, ID

Graduate Degree

  • Walla Walla University Wilma Hepker School of Social Work and Sociology, College Place, WA 


  • Fitzgerald Psychological Services, Clarkston, WA


  • 2216 Vineyard Avenue
    Lewiston, ID 83501
    United States

    Phone: (208) 746-4012
    Toll-Free: (800) 735-2426
    Fax: (833) 941-3874
    Medical Records: (208) 743-3523, ext. 6411
    Billing: (208) 746-1383, ext. 6625