Obsessive-compulsive disorder therapists & psychiatrists in Tustin, CA

Demetric “Dee” Marsh, LCSW, JD, is a dedicated behavioral health professional with over 25 years of experience in the mental health field. She is a multistate licensed Licensed Clinical Social Worker and holds a Juris Doctor degree from the Jacob D. Fuchsberg Law School in New York. She earned her Master’s degree in Social Work from Adelphi University, with a specialization in mental health and addictions, and holds a Bachelor’s degree from Hofstra University in Sociology with a minor in Political Science and French Language/Culture.

Dee has extensive experience working in a variety of roles, including psychotherapist, program director, clinical supervisor, adjunct professor, and consultant. She also provides LCSW clinical supervision. Her practice includes working with individuals, families, couples, and groups.

She specializes in a wide range of areas, including anxiety, depression, trauma, stress management, addictions, grief and loss, workplace and employment issues, women’s issues, diversity and cultural concerns, spirituality, and court-related assessments and recommendations, as well as foster care and adoption-related services.

Dee believes in meeting each client where they are and tailoring treatment to their unique needs. She is committed to creating an inclusive, safe, and supportive environment that fosters trust, healing, growth, and a strong therapeutic alliance.

I have a Master's Degree in Counseling, Marriage, and Family from Phillips Graduate Institute.

I earned a Bachelor of Arts Degree in Sociology from UCSB.

I typically work with clients who have a history of trauma, life transitions, relationship issues, and managing anxiety, The clients I work with are very motivated to make changes in their lives.

I worked with high-risk, traumatized, and abused youth for many years. I find practicing therapy very rewarding. Assisting my clients to work through life challenges and progress in their life journey is a privilege.

You're smart, self-aware, and honestly pretty good at explaining exactly why you're stuck. You just can't seem to get unstuck. The to-do list exists. The plan sort of exists. And yet — the avoidance, the overthinking, the decision that keeps not getting made. Sound familiar? Anxiety, perfectionism, and big life transitions have a way of quietly running the show. Therapy isn't about fixing what's wrong with you — because nothing is. It's about understanding what's underneath, building some actual tools, and figuring out what you want. Not what everyone else thinks you should.

My name is Dianne Fontaine, MSN, APRN, and I'm a Licensed Psychiatric Mental Health Nurse Practitioner, Board Certified (PMHNP-BC) by the American Nurses Credentialing Center (ANCC). I obtained my Master’s Degree from Walden University and has undergone advanced clinical training, equipping me to assess, diagnose, and treat a spectrum of psychiatric illnesses, as well as provide psychotherapy.

I bring 14 + years of experience providing thrrapy in both private and clinical settings. My work is grounded in a client centered strengths-based approach, rooted in unconditional, positive regard and a commitment to providing a safe, non-judgmental space where client can openly share their stories.

I identify as neurodivergent and have personally and professionally navigated ADHD. This experience allows me to bring both clinical knowledge lived understanding to my work, helping clients recognize their strengths, develop effective strategies, and move toward meaningful growth and stability.

If you’re struggling with your relationship with food, your body, or feeling stuck in cycles of restriction, bingeing, or guilt, you are not alone—and you don’t have to face it by yourself. In my private practice, I specialize in working with individuals navigating eating disorders and disordered eating.

I provide compassionate, individualized therapy for adolescents and adults experiencing anorexia, bulimia, binge eating disorder, chronic dieting, and body image concerns. In addition to eating disorder treatment, I work with children, teens, and adults facing anxiety, depression, trauma, personality disorders, substance use, and challenges related to identity and the LGBTQIA+ community. I am committed to creating an affirming, inclusive space where clients of all backgrounds feel seen, respected, & supported.

Manisha Patel is a Licensed Marriage and Family Therapist (LMFT) and has a M.A. in Psychology from Chapman University. Ms. Patel has experience working with various clients from diverse cultural backgrounds and needs for the past 22 years.