ADHD therapists and psychiatrists in Ontario, CA

I'm Lina, and I'm passionate about empowering individuals on their journey to healing and growth. With a diverse background in hospital social work, outpatient mental health services, and inpatient psychiatric care, I have gained invaluable experience and insights that enable me to support a wide range of clients facing emotional and mental health challenges.

I am a Licensed Clinical Social Worker (LCSW) with 28 years of experience in the mental health field. I earned my Master of Social Work (MSW) from the Hunter School of Social Work and have lived and practiced in California for over three decades. My professional background includes extensive work with older adults, individuals experiencing homelessness, and adults living with severe and persistent mental illness. I am known for my patient, compassionate, and attentive approach, and I strive to be fully engaged and present with every client I serve. My goal is to provide thoughtful, individualized support that helps clients feel understood and empowered in their therapeutic journey.

Life can feel overwhelming—but you don’t have to navigate it alone. I’m here to help you regain clarity, stability, and a sense of control.

I’m Monika Delyser, a board-certified Psychiatric Mental Health Nurse Practitioner providing thoughtful, culturally sensitive care for adults experiencing burnout, anxiety, mood disorders, ADHD, and sleep challenges.

I work with professionals, entrepreneurs, students, and high-functioning adults who are dealing with anxiety, burnout, and focus challenges. Many of my clients appear “fine” on the outside but feel overwhelmed, mentally exhausted, or stuck.

Who I’m a Good Fit For: busy professionals under pressure, entrepreneurs and high performers, college and graduate students, adults seeking structured, goal-oriented care.

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.

Some things you've been carrying for so long they've started to feel like part of who you are. I work with adolescents, adults, and older adults who are navigating trauma, grief, loss, and the weight of experiences that don't just go away on their own. People of all ages, ethnic backgrounds, socioeconomic situations, gender expressions, and sexual orientations find a real home in my practice, including folks within the LGBTQIA+ community. Clients often tell me they feel genuinely heard in a way they haven't before.

I earned my Master of Social Work and am a Licensed Clinical Social Worker (LCSW). My professional journey began in social services and the Department of Mental Health, and I later worked with community mental health agencies supporting people from many different backgrounds. These experiences strengthened my commitment to helping individuals feel supported and understood while navigating life’s challenges.

I have provided therapy to clients of all ages, both individually and within families, and I now focus primarily on adults who want to create meaningful change in their lives. In addition, I bring experience working with individuals with autism and ADHD diagnoses, offering strategies that highlight their strengths, improve daily functioning, and foster growth.

My approach is centered on guiding clients through anxiety, depression, trauma, and overwhelming stress, with the goal of building greater stability, confidence, and connection. I believe therapy should be a safe, collaborative space where progress feels achievable and each step brings clients closer to the life they want to live.

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.

I'm a Licensed Clinical Social Worker who believes that therapy works best when you feel truly heard — not judged. I bring warmth, honesty, and a no-nonsense approach to our work together. My goal is for every client to leave each session feeling a little more understood and a little more equipped than when they walked in. I work with most major insurance plans, so getting quality care shouldn't have to break the bank.

I believe that meaningful mental health care starts with trust, compassion, and genuine connection. Over the past 15 years, I have worked across a variety of healthcare settings, including trauma nursing, emergency nursing, and nurse leadership roles, caring for individuals and families during some of life's most challenging moments. These experiences have reinforced my belief that every person deserves to be treated with dignity, empathy, and respect.

My commitment to mental health care is also shaped by personal experience. Like many people, I have witnessed the impact of mental health challenges in my own life and among loved ones, which has deepened my understanding of the courage it takes to seek help. I strive to create a welcoming, judgment-free space where clients feel comfortable discussing difficult thoughts, emotions, and life experiences.

I am a person-centered therapist who creates a warm, nonjudgmental space where you are seen and heard. Together we will build practical coping skills and explore your values and strengths so you can navigate life's challenges with greater clarity, confidence, and resilience

Welcome! Taking the first step toward therapy can feel overwhelming, and I strive to create a supportive, nonjudgmental space where you feel heard and understood.

I am dedicated to providing compassionate, client-centered care and work with children, adolescents, adults, couples, and families. I earned my Master’s degree in Clinical Psychology from Pepperdine University and have extensive experience in community mental health, supporting individuals from diverse backgrounds and underserved communities.

Throughout my career, I have helped clients navigate a wide range of concerns, including anxiety, depression, trauma, relationship challenges, life transitions, and psychotic disorders. My approach is collaborative and tailored to each client’s unique needs, with a focus on helping you build insight, develop effective coping skills, and create meaningful, lasting change.

Whether you’re seeking support for a specific challenge or looking to improve your overall well-being, I look forward to walking alongside you on your journey toward healing and growth.