Phone: 909-989-4055


Marvin Holford, M.A.

Licensed Clinical Social Worker

Contract Therapist

Thank you for visiting Gunn Psychological Services.  I am a licensed Clinical Social Worker practicing in the mental health field since 2014.  I have a variety of prior experiences working with children, teens, adolescents, adults, and families.  Throughout the years I have gained experience working with clients dealing with a variety of challenges such as; Anxiety, Depression, Trauma, Relationship Concerns, Grief, and LGBT-related challenges.  One of my biggest interests lies in childhood trauma and working with children to process through traumatic events.  I have specialized training in Trauma Focused Cognitive Behavioral Therapy (TFCBT) and enjoy taking the role of guide to assist children and families on their journey through trauma.  I also am passionate about supporting the LGBT community in and out of the therapy office. 

Life is a journey we all walk that comes with many road blocks and challenges.  As your therapist, I hope to be a part of your journey and assist you in managing your road blocks in order to continue towards your goal of being your best self.

Phone: 909-989-4055 (call or text message)

Fax: 909-989-8005



Official therapy provider for Battle Buddy 4 Life, LLC. 

Catch Dr. Gunn on Seasons 1 and 2 of

Lifetime Network's Child Genius.

Full episodes are available here.