Our providers offer obsessive-compulsive disorder therapy in Cambridge, MA

I am a psychiatric mental health nurse practitioner based in Massachusetts, working with teenagers and adults of all ages experiencing a range of mental health concerns. I completed a master's degree in adult gerontology, followed by a post-master's degree in mental health. Through my education and experience, I have developed a deep understanding of the challenges that can affect mental well-being. My focus is on identifying these challenges and creating a customized plan to help improve mental health.

I am deeply passionate about working with teenagers and adults of all ages who feel overwhelmed by stress, anxiety, or depression related to life's challenges, such as family issues, career pressures, and relationship difficulties. I am dedicated to helping those who are motivated to improve their situation and achieve their goals.

Life's challenges can be difficult, but developing new skills is a powerful way to reclaim our strength and confidence! Let's embrace this journey together!

I am a psychologist and psychotherapist with over 30 years of experience specializing in trauma, addiction, and moral injury. Connected to Harvard University as a researcher on moral injury, forgiveness and healing, I bring both scientific rigor and deep human compassion to my work. I serve adults navigating addiction recovery, complex trauma, and existential struggles — particularly those seeking care that honors their cultural identity and values. I am bilingual in English and Portuguese and have a special commitment to the Brazilian-American community.

My work integrates evidence-based approaches — including CBT, motivational interviewing, and trauma-focused therapies — with cultural sensitivity and a deep respect for each person’s story. Whether navigating addiction, trauma, or life transitions, clients find a structured yet compassionate space to heal and grow.

You don’t have to carry this alone. Whether you’re just beginning to seek help or returning after setbacks, I’m here to walk alongside you with honesty, compassion, and hope. Taking that first step toward healing is an act of courage — and you deserve support that truly meets you where you are.

David is a Licensed Mental Health Counselor with over 15 years of experience in mental health. He is passionate about helping individuals and couples work through their issues in a way that promotes hope. David specializes in anxiety, depression, grief, addiction, relationship issues, and major life transitions. David completed his Master of Mental Health Counseling at Cambridge College. Like many therapists, David found his passion for mental health through his own experiences and recovery from substance abuse, which, combined with his professional experience, allows him to have deep compassion and understanding for his clients.

His approach to treatment is multi-dimensional using a person-centered and strength-based approach, using techniques from cognitive behavioral therapy, solution-focused therapy, and exposure therapy.

David takes an exclusive approach to each individual to meet them where they are and creates a journey that provides light for the path ahead from day one. If this sounds like a good fit for you schedule an appointment with David today!

Dr. Sumio Shinohara is a Licensed Psychologist (LP) with more than 15 years of experience working with adults, adolescents, and couples seeking help with depression, anxiety, life transitions, men’s issues, trauma/PTSD, mood disorders, grief and loss, and relationship issues. 

Dr. Shinohara earned his Master's degree in Counseling Psychology from Abilene Christian University and completed his Doctorate in Clinical Psychology at William James College in MA. He also received his psychoanalytic training at the Boston Graduate School of Psychoanalysis.

Dr. Shinohara's primary therapeutic approach is eclectic, including person-centered, cognitive behavioral (CBT), and psychodynamic approaches, and values each client's experience of feeling deeply and empathetically understood. Through the experience of feeling understood, clients will also be able to have opportunities to understand more about themselves, which usually brings multiple positive improvements in clients' life.

Dr. Shinohara believes in the power of empathy and acceptance clients can experience in a safe therapeutic relationship. He seeks to establish a caring, respectful, and compassionate relationship with clients who have difficulty accepting negative aspects of themselves. Dr. Shinohara will also encourage clients to focus on the root cause of the issues in addition to coping and managing their symptoms.

Jing J. Liu is a Resident Licensed Mental Health Counselor with over 10 years of experience in a variety of healthcare settings. She specializes in assisting adults and seniors who are coping with major life transitions, relationship challenges, depression, anxiety, and trauma. Jing connects with clients to create a space for vulnerability, reflection, healing, and empowerment.

Jing has a Master’s in Rehabilitation Counseling from the University of Massachusetts Boston. She works with a client-centered approach and utilizes treatment models including mindfulness, spiritual healing, cognitive behavioral therapy, dialectical behavior therapy, and compassion-focused therapy. Jing also specializes in meditation and somatic healing.

Jing believes in emphasizing the importance of compassion in interactions with the world and the self. She looks forward to working with you as a team to assist you in attaining your goals. Schedule your first appointment with Jing today!

I am a Resident Licensed Mental Health Counselor with 14 years of experience supporting individuals on their journey toward healing and personal growth. I specialize in helping clients navigate life transitions, manage stress, and cope with anxiety. My goal is to provide a safe, supportive, and empowering space where people can gain clarity, build resilience, and move confidently toward their goals. I approach therapy with compassion and cultural sensitivity, ensuring each client feels understood and equipped to overcome challenges.

I earned my Master’s in Mental Health Counseling from the Boston Graduate School of Psychoanalysis. My therapeutic style blends evidence-based strategies with a collaborative, client-centered approach. I create an open, nonjudgmental environment where individuals can explore challenges, strengthen coping skills, and discover new perspectives.

I know that reaching out for support takes courage, and I want you to feel reassured that you don’t have to face life’s difficulties alone. Together, we can uncover your strengths and chart a path toward meaningful growth and lasting change. I would be honored to walk alongside you on your journey.

Marissa Ross is a board-certified Psychiatric Mental Health Nurse Practitioner (PMHNP-BC) who treats a variety of mental health concerns including mood disorders, depression, anxiety, sleep, insomnia, PTSD, substance abuse, and women's issues. Marissa is a compassionate provider with strong clinical skills and an emphasis on following evidence-based guidelines.

Marissa completed her PMHNP program at Rivier University-Nashua. Through her studies at Rivier, Marissa established strong clinical skills and rapport-building techniques in working with adult patients. Marissa provides culturally sensitive, emotionally-focused, and person-centered care through cognitive behavioral therapy (CBT), dialectical behavior therapy (DBT), and Motivational Interviewing (MI). 

Marissa is confident in her ability to support adult patients seeking guidance in coping with a variety of mental health struggles. If you are ready to get started on your healing journey, schedule an appointment with her today. 

I am a master’s level counselor with 4 years of experience in the mental health field. I work with individuals navigating trauma, depression, anxiety, attention-deficit/hyperactivity disorder, substance use disorders, and personality-related challenges. I take a person-centered approach and strive to create a calm, supportive, and nonjudgmental space where clients feel respected, understood, and empowered throughout their healing journey.

I earned my master’s degree in psychology counseling from Lesley University. I am trained in trauma-informed care, exposure-based techniques, and other evidence-supported approaches. Rather than using a one-size-fits-all model, I thoughtfully tailor treatment to each client’s needs, goals, and readiness for change.

You do not need to have everything figured out to begin therapy. If you are feeling overwhelmed, stuck, or unsure of your next steps, I am here to support you in building awareness, emotional stability, and healthy coping skills at a pace that feels right for you. When you are ready to begin, I am ready to walk alongside you.

Margaret Oloyede is a Psychiatric Mental Health Nurse Practioner with 8 years of experience treating adults who are struggling to cope with depression, bipolar disorder, anxiety disorders, ADHD, and eating disorders. 

Margaret received her Master’s of Science from Regis College—Massachusetts. Her past experience includes having provided inpatient care, as well as having worked in outpatient settings, offering psychiatric care to patients who have complex or chronic illnesses.

Work with Margaret to start prioritizing your mental health—she’ll offer expert guidance and support as you both address the difficult situations or mental health conditions that are causing your emotional pain. Margaret’s goal is to help stabilize your mental health while also increasing your physical activity, self-reassurance, and coping skills through quality psychiatric care.