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Effective Therapy for Adults, Adolescents, Couples, and Families

Dr. Diane R. Gehart, LMFT

Welcome! I have been working with individuals, couples, children, and families to quickly and effectively resolve problems for over 20 years. As a professor of Marriage and Family Therapy at California State University, Northridge, I carefully track emerging research in the field and have studied a wide range of therapeutic approaches, including solution-oriented, narrative, family systems, mindfulness, emotionally focused therapy, cognitive-behavioral, and trauma-focused therapies. My primary approach is a collaborative and strength-based, which involves carefully listening to clients to identify the best way to address their unique situation in manner that is comfortable and effective for them. I am also am certified through Amen Clinics as a Brain Health Coach, working with clients to develop healthy lifestyles to maintain lifelong brain and overall health without psychiatric medications whenever possible. Most clients say I have a refreshingly warm and down-to-earth presence that makes them feel comfortable and at ease discussing even the most difficult issues.

Areas of clinical specialty include:
  • Mood and Anxiety Disorders
  • Trauma and PTSD
  • Couples Counseling and Marriage Therapy
  • Divorce Recovery and Remarriage
  • Family Therapy for ADHD and Child Mood and Behavior Issues
  • Adolescent Mood and Anxiety Disorders
  • Professionals
  • Mindfulness as Alternative to Medication
  • Wellness and Optimal Functioning

I have authored several books, including Mastering Competencies in Family Therapy, Acceptance in Couple, Collaborative Therapy: Relationships and Conversations that Make a Difference (co-editor), and Family Therapy, and Theory and Treatment Planning in Counseling and Psychotherapy. Additionally, I have written numerous professional articles and speak internationally, having given hundreds of workshops to professionals and general audiences. My work has been featured in newspapers, radio shows, and television worldwide. I am on the editorial review boards for several academic journals as well as community service boards related to child sexual abuse. I am an active leader in the field and have served on numerous state and national boards in the field of family therapy. I am an Approved Supervisor and Clinical Fellow of the American Association for Marriage and Family Therapy and a member of the American Counseling Association.

My office is in Agoura Hills/Westlake Village, easily accessible to those in Thousand Oaks, Simi, Conejo, and West San Fernando Valley areas.
Contact Me
If you are interested in contacting me for psychotherapy or related services, please call me at:

(805) 405-8248

Diane R. Gehart, Ph.D., LMFT
30101 Agoura Court
Suite 204
Agoura Hills, CA 91301

Send an Email
Fax: 805.371.7471

Clients can find download Forms and Directions for the first session.

If you would like to schedule an appointment, contact by phone 805-405-8248 or email

Diane R. Gehart, Ph.D.

Mastering Competencies

Students, faculty, and practitioners: Find resources that go with the texts in Dr. Gehart’s Mastering Competencies Series with Cengage Publishers.