Meet Our Therapists and Doctoral-Level Psychologists
At Duality Psychological Services, you are supported by a team of therapists and doctoral-level psychologists and who combine clinical depth with genuine compassion.
Our practice was built on a clear belief: people don’t need to be “fixed.” They need clarity, honest support, and tools that respect their individuality so they can regain balance and a sense of power in their lives.
Dr. Joel Frank, Psy.D.
Founder & Licensed Psychologist
I’ve spent years helping clients untangle the impact of trauma, family-of-origin wounds, and relationship patterns that leave them feeling powerless.
Most of the people I work with are high-functioning adults who have held things together for a long time, often at the expense of their own wellbeing.
They come in feeling burned out, overwhelmed, or unsure how to break long-standing cycles.
I don’t believe in one-size-fits-all therapy. I take time to understand who you are, what you carry, and what has shaped the way you move through the world.
My goal is to help you understand yourself more clearly so you can make choices that feel grounded, intentional, and aligned with your values.
I care deeply about helping clients understand themselves in a way that brings more balance and personal power.
I am calm and thoughtful in my style, and I approach every conversation with genuine respect for the strength it takes to confront long-standing patterns.
Dr. Joel Frank’s Training and Clinical Focus
Psychologist license #PSY33924
Doctoral degree in Clinical Psychology with a focus in Neuropsychology
Specialized training in trauma informed care, DBT-informed tools, Seeking Safety, and relational therapy
Experience working with PTSD, complex PTSD, anxiety, depression, and family of origin patterns
Extensive work with ADHD, autism, and psychodiagnostic assessment
Clinical experience in state hospitals, university hospitals, crisis settings, community mental health, and outpatient therapy
Works with adults, young adults, transitional-age youth, adolescents, and families across California
Dr. Regine Muradian, Psy.D.
Licensed Clinical Psychologist
I work with children, adolescents, and adults who are often carrying more than they let on.
Many of the people I see are navigating anxiety, depression, disordered eating, ADHD, or the daily weight of executive functioning challenges.
They tend to arrive feeling stretched thin and unsure where to begin.
I don't believe age determines what's possible. I've always held that real change starts with a single idea.
Every client — no matter how young or how seasoned — has inner strengths worth uncovering.
I draw on my own multicultural background to meet people where they are, using psychodynamic, CBT, and DBT approaches to build practical tools while making sense of the deeper patterns underneath.
I care deeply about advocacy and education, and I bring that same energy into the room with you.
I'm warm, direct, and genuinely invested in helping you recognize what you're capable of.
Dr. Regine Muradian’s Training and Clinical Focus
Psychologist license #PSY23187
Doctoral degree in Clinical Psychology with a specialization in children and families
Certified Clinical Anxiety Treatment Professional (CCATP)
Specialized expertise in psychological and neuropsychological assessment
Experience working with anxiety, depression, eating disorders, ADHD, OCD, and executive functioning
Therapeutic approaches include psychodynamic therapy, CBT, and DBT
Undergraduate degree from USC; clinical training at Cedars-Sinai and Children's Hospital
Former Director of Behavioral Health Services at Good Samaritan Hospital, with extensive experience supervising doctoral interns
Fluent in English, French, and Romanian, and able to conduct sessions in all three languages
Works with clients ages 13 and up
Melissa Briseno-Vasquez, LCSW
Licensed Clinical Social Worker
I work with adults who are carrying more than they let on.
Many of the people I see are navigating trauma, depression, anxiety, gender dysphoria, or the strain of relationship challenges — often alongside co-occurring substance use concerns or more severe and persistent mental illness. They tend to arrive feeling overwhelmed, disconnected, or unsure how to make sense of what they've been through.
I've provided care in clinics, schools, and community centers, which has shaped my belief that every client deserves a space where they feel respected, understood, and met without judgment.
I bring a trauma-informed lens to every session, drawing on EMDR alongside Cognitive Behavioral Therapy, Psychodynamic Therapy, and Motivational Interviewing to adapt treatment to each person's needs, goals, and pace. My focus is helping clients process painful or overwhelming experiences while building the tools that support stability, resilience, and lasting change.
I'm steady, compassionate, and genuinely committed to helping you move toward a life that feels more like your own.
Melissa Briseno-Vasquez's Training and Clinical Focus
Licensed Clinical Social Worker #134638
EMDR Certified through EMDRIA
Trauma-focused care specializing in processing painful and overwhelming experiences
Experience working with PTSD, depression, anxiety, gender dysphoria, trauma, relationship challenges, and co-occurring substance use concerns
Background supporting clients with severe and persistent mental illness
Therapeutic approaches include EMDR, CBT, Psychodynamic Therapy, and Motivational Interviewing
Clinical experience across clinics, schools, and community mental health settings
Works with clients ages 18 and up
Ms. Yasi Nia, M.A.
Psychological Associate
I work with people who feel disconnected from themselves — navigating mood concerns, burnout, grief, or the sense that something is quietly off-balance.
Many of the clients I see are looking to regain their footing and rebuild a sense of internal stability.
I'm open to working with clients across the lifespan, from preschoolers through college-aged individuals, with a particular focus on middle and high school students.
I don't believe in a one-size-fits-all approach. I draw on evidence-based practices and tailor them to your unique circumstances.
My goal is to help you understand what lies beneath the surface and turn that insight into realistic, lasting change.
I welcome clients with diverse needs, and I'm committed to building a treatment plan that genuinely fits your goals.
I value flexibility and collaboration, and I bring patience and steadiness to every conversation.
Beginning therapy can feel like a big step, especially when you already feel stretched thin, and you don't have to have it all figured out before you reach out.
Ms. Yasi Nia's Training and Clinical Focus
Psychological Associate #94029325, under the supervision of Dr. Joel Frank, Psy.D.
Registered Behavior Technician (RBT)
Pupil Personnel Services (PPS) Credential – School Psychology
Experience working with anxiety, depression, PTSD, bipolar disorder, ADHD, schizophrenia, OCD, autism spectrum disorder, and other neurodevelopmental conditions
Therapeutic approaches include CBT, DBT, ACT, Mindfulness-Based Cognitive Therapy (MBCT), psychodynamic therapy, and Family Systems therapy
Professional experience supporting preschool through college-aged clients, with a primary focus on middle and high school students
Committed to individualized, collaborative treatment plans tailored to each client
Fluent in English and Farsi, and able to conduct sessions in both languages
Works with preschoolers through college-aged individuals, with a particular focus on middle and high school students.
How To Get Started
Reach out
Book your free 15-minute consult using the form, or call us directly.
We get to know you.
We will reach out and chat with you to discuss fees and which therapist would be the right fit from our team.
We build your game plan.
Get started! We'll book your first session quickly so you get on the path to feeling better quickly.