Meet Our Denver DBT & CBT Therapists
Experienced, Compassionate Clinicians Dedicated to Your Care
Choosing a therapist is one of the most personal decisions you can make — and you deserve to know exactly who will be walking alongside you on your healing journey. Whether you are searching for a DBT therapist in Denver or a CBT therapist in Denver, our behavioral health team Denver families and individuals trust is right here at Mountainside Behavioral Health. Our female-owned practice is made up of licensed, highly trained clinicians who specialize in Dialectical Behavior Therapy (DBT) and Cognitive Behavioral Therapy (CBT) — and every one of them is committed to providing compassionate, evidence-based care that helps you feel seen, heard, and empowered.
We work with adolescents, adults, couples, and families across the Denver metro area — both in person and via telehealth. Get to know the people behind the practice below.
Emily Biggs-Heisler, Ph.D. — Clinical Director & Co-Owner
Credentials: Licensed Clinical Psychologist Role: Clinical Director & Co-Owner Ages Served: 12 and older Therapy Formats: Individual therapy, family therapy, couples therapy, DBT skills groups
Specializations & Training
Dr. Emily Biggs-Heisler brings over a decade of intensive training in both DBT and CBT to her role as Clinical Director of Mountainside Behavioral Health. As a licensed clinical psychologist in Denver, she has dedicated her career to helping individuals and families navigate complex emotional challenges — including emotion dysregulation, trauma, self-harm, and suicidal ideation.
Emily is trained in brief suicide prevention interventions and trauma-based therapies, and she leads both individual treatment and DBT skills groups at the practice. As a licensed psychologist in Denver with deep expertise in evidence-based modalities, her clinical depth makes her a trusted resource for clients facing some of life’s most difficult moments.
Her Approach
Emily believes that effective therapy starts with genuine connection. She creates a space where clients — whether they are teens stepping into therapy for the first time or adults working through long-standing patterns — feel safe enough to be honest about what they are experiencing. Her approach blends structured, skills-based work with authentic warmth, so you leave each session with practical tools and a real sense of being cared for.
Personal Touch
As co-owner of a female-owned behavioral health practice in Denver, Emily is deeply invested in the local community. She is passionate about expanding access to high-quality DBT and CBT services in Colorado, and she mentors the next generation of clinicians who share that mission.
Anabelle Brecker, LCSW — Co-Owner
Credentials: Licensed Clinical Social Worker (LCSW) Role: Co-Owner & Therapist Ages Served: 15 and older Therapy Formats: Individual therapy, DBT skills groups
Specializations & Training
Anabelle Brecker is a licensed clinical social worker and co-owner of Mountainside Behavioral Health. She is trained in DBT, CBT, trauma-informed interventions, and suicide prevention — bringing a well-rounded, evidence-based skill set to every client relationship.
Anabelle works with teens (ages 15+) and adults who are managing anxiety, depression, borderline personality disorder, trauma, and emotional dysregulation. She is also a facilitator of the practice’s DBT skills groups, guiding participants through modules on mindfulness, distress tolerance, emotion regulation, and interpersonal effectiveness.
Her Approach
Anabelle’s clinical style is grounded in collaboration and empowerment. She meets you where you are — without judgment — and partners with you to build the skills and insights that create lasting change. Her trauma-informed lens means she is always attuned to how past experiences shape present struggles, and she works intentionally to create a therapeutic space that feels safe and affirming.
Personal Touch
As co-owner of a female-owned practice, Anabelle is committed to building a behavioral health team in Denver that reflects the values of inclusivity, compassion, and clinical excellence. She and Emily share a vision for a practice where every client feels genuinely valued from the very first phone call.
Audrey Fisher, LPC — Licensed Professional Counselor
Credentials: Licensed Professional Counselor (LPC) Role: Therapist Ages Served: 13 and older Therapy Formats: Individual therapy, DBT skills groups
Specializations & Training
Audrey Fisher is a licensed professional counselor at Mountainside Behavioral Health with specialized training in DBT, CBT, trauma-informed interventions, and suicide prevention. What sets Audrey apart within the Denver behavioral health community is her additional expertise in two important areas: substance use treatment and athlete mental performance.
Audrey understands that substance use often coexists with emotional dysregulation, trauma, and mental health conditions — and she brings a non-judgmental, skills-based approach to helping clients address these interconnected challenges. Her work with athletes draws on the same foundation of evidence-based strategies, helping individuals manage performance anxiety, identity issues, and the unique pressures that come with competitive environments.
Her Approach
Audrey combines directness with deep empathy. She is the kind of therapist who will challenge you to grow while making sure you feel supported every step of the way. Her sessions blend structured skill-building with space for genuine reflection, and she tailors her approach to match what each client needs — whether that is a teen navigating high school or an adult rebuilding their relationship with themselves.
Personal Touch
Audrey’s connection to athletics gives her a unique understanding of discipline, resilience, and the mental toll that high-performance settings can take. She brings that lived awareness into her clinical work, making her an especially relatable therapist for clients who are used to pushing through rather than processing.
Diana Huizar, Ph.D. — School Psychologist
Credentials: School Psychologist (Ph.D.) Role: Therapist & Youth Specialist Ages Served: 11–24 (and their families) Therapy Formats: Individual therapy, family support Languages: English & Spanish (bilingual)
Specializations & Training
Dr. Diana Huizar is a school psychologist at Mountainside Behavioral Health who specializes in working with youth and young adults ages 11 to 24. Her therapeutic approach is grounded in DBT, Motivational Interviewing, and Loving Kindness — a combination that allows her to connect with young people in a way that is both structured and deeply compassionate.
Diana’s clinical focus centers on emotional well-being, behavior support, and life skills development. She works closely with families to create a unified support system around each young person, ensuring that the progress made in therapy extends into school, home, and social settings. As a bilingual clinician (English and Spanish), she expands access to quality teen therapy in Denver for families who might otherwise face language barriers.
Her Approach
Diana believes in meeting young people with curiosity and respect. She understands that adolescents and young adults are navigating enormous developmental changes, and she provides a steady, affirming presence that honors their autonomy while guiding them toward healthier coping strategies. Her use of Motivational Interviewing helps clients tap into their own reasons for change, making the therapeutic process feel collaborative rather than prescriptive.
Personal Touch
Before entering the behavioral health field, Diana served in the United States Marine Corps — an experience that shaped her discipline, resilience, and commitment to service. That background gives her a unique perspective on structure, purpose, and the importance of mental health support during major life transitions. Young clients and their families consistently appreciate her ability to be both strong and gentle.
Why Our Denver Behavioral Health Team Stands Out
When you choose Mountainside Behavioral Health, you are choosing a team that combines advanced clinical training with genuine human connection. Here is what sets our therapists apart:
- Deep specialization in DBT and CBT — These are not just therapies we offer; they are the foundation of everything we do.
- Diverse expertise — From trauma and self-harm to substance use, athlete performance, and bilingual care, our team covers a wide range of needs.
- All ages, all stages — We serve clients from age 11 through adulthood, including teens, couples, and families.
- Female-owned and values-driven — Our practice was built on the belief that every person deserves compassionate, high-quality mental health care.
- Community-rooted — We are proud to be part of the Denver community, serving Colorado residents in person and through telehealth.
Ready to Meet the Right Therapist?
You have taken the time to learn about our team — and that says something important about you. Finding the right therapist matters, and we would love the opportunity to show you what compassionate, evidence-based care looks like in practice.
We offer a free consultation so you can ask questions, share what is going on, and see if Mountainside Behavioral Health feels like the right fit.
Frequently Asked Questions About Our Therapists
How do I know which Mountainside therapist is right for me?
During your free consultation, we will learn about your goals, challenges, and preferences — then match you with the therapist whose specialization and style best fit your needs. Whether you are looking for a DBT therapist in Denver, a CBT therapist in Denver, or support for a teen, we will guide you to the right clinician. You can also browse the therapist bios Denver families rely on right here on this page to get a head start.
Are your therapists licensed in Colorado?
Yes. Every clinician at Mountainside Behavioral Health holds active licensure or credentialing in the state of Colorado. Our team includes a licensed clinical psychologist, a licensed clinical social worker, a licensed professional counselor, and a credentialed school psychologist.
Do you offer therapy in Spanish?
Yes. Dr. Diana Huizar is bilingual in English and Spanish and provides therapy services to youth and families who prefer to communicate in Spanish. This is an important part of our commitment to accessible, inclusive care in the Denver area.
What ages do your therapists work with?
Our team serves clients as young as 11 through adulthood. Specific age ranges vary by therapist — Dr. Huizar works with ages 11–24, Dr. Biggs-Heisler with ages 12+, Audrey Fisher with ages 13+, and Anabelle Brecker with ages 15+. We also offer teen-specific therapy programs.
Do your therapists offer telehealth sessions?
Yes. All of our therapists offer both in-person sessions at our Denver office and telehealth appointments for clients throughout Colorado. This flexibility makes it easier to stay consistent with your care.
Is Mountainside Behavioral Health in-network with my insurance?
Mountainside Behavioral Health is an out-of-network provider. We provide superbills after each session that you can submit to your insurance company for potential reimbursement. Our team can walk you through this process during your consultation.
Free Consultation -
Begin Your Healing Journey
Ready to take the next step? Request a Consultation and let us match you with the right therapist for your needs.