

Fontana residents with UnitedHealthcare can connect with mental health providers through Headway's extensive network, offering flexible in-person and virtual sessions. With copays between $0-$30 and average savings of 75%, accessing quality care is affordable. Our providers support talk therapy and medication management with same-week availability.
Vanessa Diaz is a board-certified, licensed provider who offers expert mental health care for anxiety, depression, ADHD, PTSD, bipolar disorder, stressful life events, and many more conditions. Her goal is to help her clients live their best lives using modern, evidence-based solutions.
Hello! Congratulations, on starting your journey to finding a therapist that meets your needs! I have been a therapist for 8 years in California. I received my Masters from USC and am a Licensed Therapist. I truly enjoy building connections with my clients and working collaboratively with them.
Hello, my name is Sherri Crespin, a board-certified Psychiatric Mental Health Nurse Practitioner passionate about providing integrated care for complex mental health challenges, including personality disorders, PTSD and trauma, substance use disorders, ADHD, depression, anxiety, panic disorders, mood disorders, and bipolar conditions. My practice recognizes these conditions are interconnected in ways requiring specialized understanding.
I chose these specializations because I understand how trauma influences personality development, how ADHD complicates substance use recovery, how symptoms emerge during extreme stress, and how these complex interactions require providers who see the complete picture. Whether you're in recovery while managing other conditions, dealing with personality patterns that developed as survival mechanisms, or navigating multiple diagnoses, I bring the expertise needed for comprehensive care.
My approach emphasizes evidence-based treatments and the healing power of being truly understood. I recognize that seeking help for stigmatized conditions like personality disorders takes tremendous courage, especially after negative experiences with providers. I create a therapeutic space where you can explore your experiences without judgment or shame.
You can expect a thorough assessment, personalized treatment planning, and consistent support throughout our work together. My goal is to help you build resilience, develop effective coping strategies, and thrive in your daily life.
IMPORTANT: For current availability, visit https://mentalhealthpractitioners.com/ or call or text us anytime at 415-968-6515—we make it super easy! Intake forms are required before your first appointment. You can text us your info or email us at [email protected]. Please send us a picture of your insurance information and photo ID!



Headway makes it easy to get affordable in-network mental health care with United Healthcare — from finding the right therapist or psychiatrist, to understanding costs, to booking your first session.
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