OUR PEOPLE

Meet The Team

We believe it “takes a village” for a business to thrive. Our Founders took their experiences in life and profession and built Collaborative to solve the problems they had encountered before. It’s new, it’s fresh, its humanity at its peak.

Please feel free to search for your service, location or insurance provider. You may also book with a provider on their profiles below

Maria Pietruszka, MS, LMHC, CASAC-T

Position: Psychotherapist
Phone: (862) 329-6826
Email: maria.pietruszka@collaborative-therapy.com
Areas of Work: *Out of Network*, 12- Step Friendly, Abstinence Based Psychotherapy, Acceptance Commitment Therapy (ACT), Addiction Counseling, Adjustment Disorder, Adolescent / Teen Issues, Adolescent Addiction / Substance Use, Adoption, Adult Psychotherapy, Adults (25-64), Affirming Therapy, Aging Parents, AIDS - HIV, Alcohol Use, Alcoholism, Anger, Anger Management, Animal-Assisted Therapy, Anti-Social Personality Disorder (ASPD), Anxiety Disorder, Artist-Related Stress, Asexual, Attachment Disorder, Behavior Modification, Behavioral Issues / Problems, Behavioral Therapy, Bereavement / Grief Counseling, Betrayal Trauma, BIPOC Mental Health Issues, Bisexual, Bisexual, Body Positivity/Health at every size, Body-Focused Therapy (ex: Tapping), Borderline Personality Disorder (BPD), Buddhist, Bullying, Burnout, Canabis Use disorder, Career-Related Stress, Caregiver Burnout, Chemical Dependency Assessments, Childhood Trauma, Children (<13), Christian, Christian Counseling, Chronic Relapse, Client Centered Therapy/Rogerian Therapy, Clinical Supervision and Licensed Supervisors, Codependency, Cognitive Behavioral Therapy for Psychosis (CBT), Commitment Obstacles, Community Violence, Compassion Fatigue, Confidence Issues, Coping Mechanism Development, COVID-19 Stress, Credentialed Alcoholism and Substance Abuse Counselor, Cultural Competence, Cultural Diversity Issues, Dance/Movement Therapy (DMT), Dating, Depression, Dialectical Behavioral Therapy (DBT), Disruptive, Impulse-Control and Conduct Disorders, Drug Addiction, Drug Use, Dual Diagnosis, Early Childhood Trauma, Emerging Adulthood, Emotion Regulaton Therapy (ERT), Emotional Abuse, Emotional and Behavioral Disorders, Emotional Disturbance, Eye-Movement Desensitization and Reprocessing (EMDR), Family Conflicts / Issues, Family constellations, Family Dynamics / Systems, Family Planning, Family Systems, Fear of Failure, Female Identifying, Feminist, Fidelis Care of New York, Forensic Psychology, Gambling / Crypto Addiction, Gay, Gay, Generalized Anxiety Disorder (GAD), Group Therapy, Group Therapy, Harassment, Harm Reduction Therapy, Health at Every Size, Health-Related Concerns, Humanistic Therapy, Immigration, Immigration Psychological Evaluation, Imposter Syndrome, Impulse Control Disorder (ICD), Indecision, Individual Therapy, Intergenerational Trauma, Internal Family systems (IFS), Internet Addiction, Intersex, Intervention, Intimate Partner Violence, Intimate Partner Violence (IPV) Trauma, Intrusive Thoughts, Irrational Fears, Jewish, Lesbian, Lesbian, Level 3 Clinician, LGBTQIA+, Life Transitions, Life Transitions, Loneliness, Low Self Esteem, Major Depressive Disorder (MDD), Male Identifying, Marijuana Disorder, Marriage Counseling, Masculinity-Related Stress, Medication Management, Medication Management, Medication-Induced Anxiety Disorder, Mental Health Problem / Illness, Mental State Opinion, Mentalization Based Treatment, Mid-Life Crisis, Migraines / Chronic Headaches, Mindfulness-Based Cognitive Therapy (MBCT), Money-Related Stress, Mood Disorder/Mood Swings, Motivational Interviewing (MI), Multicultural Therapy, Music Therapy, Muslim, Natural Disasters, Non-Binary, Non-suicidal Self-Injury, Non-Traditional Romantic Stress, Nonreligious, Open Relationships/Non-Monogomy, Parenting, Peer Relationships, Perfectionism, Performance Anxiety, Positive Psychology, Post Traumatic Stress Disorder (PTSD), Post-Traumatic Stress Disorder (PTSD) Counseling, Pre-College Fears, Premarital / Marital, Premenopausal Symptoms, Premenstrual Dysphoric Disorder (PMDD), Premenstrual Syndrome (PMS), Procrastination, Psychedelic Integration Therapy, Quarter-Life Crisis, Queer, Queer, Queer-Competent, Questioning, Race-Related Stress, Racial Justice Framework, Racism Issues, Rational Emotive Behavior Therapy (REBT), Reality Therapy, Recently Moved, Refugee Trauma, Relapse Prevention Therapy, Relationship Struggles / Issues, Romantic Life, School Phobia, Seasonal Affective Disorder (SAD), Self Esteem, Seniors (65+), Separation Anxiety, Sex Positive/Kink Friendly, Sex Worker Positive, Sexual Identity, Sexuality, Sibling-Related Stress, Social Anxiety, Social Anxiety Disorder, Social Justice, Social Life, Social Therapy, Spiritual Crisis or Transition, Spirituality, Straight, Strength-Based, Strength-Based Therapy, Stress, Stress Management, Teaching, Teenagers/Adolescents (13-17), Trans-Competant, Transgender, Transitioning, Trauma / Trauma Focused, Trauma Therapy, Trauma-Focused Cognitive Behavioral Therapy (TF-CBT), Vegan, Vulnerability, Women's Issues / Obstacles, Women's Issues Therapy, Work-Related Counseling, Worry, Young Adulthood, Young Adults (18-24)
Location: Tele-Health/Virtual

Maria was born in Poland and migrated to NYC at the age of 3.  She was raised in Brooklyn and carries that as a badge of honor.

Maria attended Hunter College where she graduated with a degree in Sociology.  She then attended LIU Brooklyn and obtained her Master’s in Mental Health Counseling in 2017.  During her time at LIU Brooklyn, she was the campus representative for the American Psychology Association Division 35 Society for the Psychology of Women. Maria was involved in hosting events that help spread awareness for feminist research, theory and education to understand and improve the lives of girls and women in all their diversities. This helped Maria develop her passion towards working with women and women’s issues.

After graduation, Maria was hired as a full time substance abuse counselor at Outreach, where she completed her internship for graduate school. She worked with adults to help them reach their goals in recovery. Maria implemented harm reduction techniques to help promote a more inclusive and realistic approach for treating substance use disorders.  She is determined to approach all her clients by meeting them where they are and empowering them to meet their treatment and therapy goals.

After 3 years, Maria was promoted to Program Coordinator where she was responsible for running Restart Academy, a Department of Education alternative high school for students with substance use and behavioral issues and an after school program for outpatient services for adolescents. Maria enjoyed working and advocating for adolescents and young people. She guided them through different life transitions like: finishing high school, coping with peer pressure and preparing for the next chapters of their lives like college or full time employment.

Maria also supervised new counselors and her approach was always to empower counselors and teach them listen to their “clinical gut”.

Maria is driven by social justice and participated in movements for Black Lives Matter, women’s rights and animal rights. Her approaches in therapy display her commitment to provide an empathic, compassionate and judgement-free space where people from all walks of life can address their emotional issues, life transitions and meet their therapy goals.

When she is not in session, Maria teaches as an adjunct lecturer at Hunger College. She teaches courses like Drugs and Society and the Sociology of Mental Health.  In her free time, Maria loves to re-watch “The Office”, spend time with her two cats Rajah and Stella and try new vegan recipes.


Maria Pietruszka, MS, LMHC, CASAC-T

Psychotherapist

Maria was born in Poland and migrated to NYC at...

Lisa Henshaw

Lisa Henshaw, PhD, LCSW

Position: Psychotherapist
Phone: (929) 297-8269
Email: lisa.henshaw@collaborative-therapy.com
Areas of Work: *Out of Network*, 12- Step Friendly, Adjustment Disorder, Adult Psychotherapy, Adults (25-64), Afflictions, Aging Parents, Agitation, Anxiety Disorder, Anxiety Disorders, Attachment Disorder, Attachment Theory, Bereavement / Grief Counseling, Betrayal Trauma, BIPOC Mental Health Issues, Bisexual, Bisexual, Body Positivity/Health at every size, Borderline Personality Disorder (BPD), Burnout, Career-Related Stress, Caregiver Burnout, Caregiving Challenges, Childhood Trauma, Children (<13), Christian, Chronic Illness, Chronic Pain, Client Centered Therapy/Rogerian Therapy, Clinical Supervision and Licensed Supervisors, Co-Occuring Disorders, Codependency, Cognitive Behavioral Therapy for Psychosis (CBT), Cognitive Processing Therapy for PTSD (CPT), Cognitive-Behavioral Therapy (CBT) , Community Violence, Compassion Fatigue, Complex Trauma, Confidence Issues, Coping Mechanism Development, COVID-19 Stress, Crisis Intervention, Crisis Intervention, Cultural Competence, Cultural Diversity Issues, Culturally Sensitive, Dating, Depression, Dialectical, Dual Diagnosis, Dual Diagnosis, Early Childhood Trauma, Emerging Adulthood, Emotional Abuse, Emotional and Behavioral Disorders, Emotional Disturbance, Emotionally Focused, End of Life Challenges, Existential Anxiety, Existential Crisis or Transition, Family Conflicts / Issues, Family Dynamics / Systems, Family Planning, Fear of Failure, Female Identifying, Feminist, Fertility / Infertility, Gaslighting, Gay, Generalized Anxiety Disorder (GAD), Grief and Loss, Group Therapy, Harassment, Health at Every Size, Immigration, Imposter Syndrome, Indecision, Individual Therapy, Intergenerational Trauma, Interpersonal, Intimate Partner Violence, Intimate Partner Violence (IPV) Trauma, Intrusive Thoughts, Irrational Fears, Jewish, Lesbian, Lesbian, Level 3 Clinician, LGBTQIA+, Life Transitions, Loneliness, Low Self Esteem, Major Depressive Disorder (MDD), Malaise, Male Identifying, Masculinity-Related Stress, Medical Trauma, Men's Mental Health Issues, Mental Health Problem / Illness, Mid-Life Crisis, Mindful-Based Therapy, Mindfulness-Based Stress Reduction (MBSR), Money-Related Stress, Mood Disorder/Mood Swings, Motivational Interviewing (MI), Muslim, Narrative Therapy, Natural Disasters, Nonreligious, Peer Relationships, Perfectionism, Performance Anxiety, Perinatal Mental Health, Person Centered (Rogerian), Personality Disorders, Physical Abuse, Physical Abuse Trauma, Post Traumatic Stress Disorder (PTSD), Post-Traumatic Stress Disorder (PTSD) Counseling, Pre-College Fears, Pregnancy, Pregnancy-Related Stress, Premenstrual Dysphoric Disorder (PMDD), Premenstrual Syndrome (PMS), Prenatal, Prolonged Exposure Therapy, Prolonged Grief Disorder (PGD), Psychodynamic Therapy, Psychological First Aid, Psychological Trauma, Quarter-Life Crisis, Queer, Queer, Queer-Competent, Race-Related Stress, Racial Justice Framework, Racism Issues, Rational Emotive Behavior Therapy (REBT), Recently Moved, Refugee Trauma, Relational, Relational Therapy, Relationship Struggles / Issues, Romantic Life, Seasonal Affective Disorder (SAD), Self Esteem, Self-Reflection, Seniors (65+), Sibling-Related Stress, Social Anxiety, Social Anxiety Disorder, Social Justice, Solution-Focused Brief Therapy (SFBT), Spiritual Crisis or Transition, Spirituality, Straight, Strength-Based, Strength-Based Therapy, Stress, Teenagers/Adolescents (13-17), Trans-Competant, Transgender, Transitioning, Trauma / Trauma Focused, Trauma-Focused Cognitive Behavioral Therapy (TF-CBT), Traumatic Brain Injury, Traumatic Grief, Vegan, Veterans, Vulnerability, Women's Health, Women's Issues / Obstacles, Worry, Young Adulthood, Young Adults (18-24)
Location: Tele-Health/Virtual

I am a Clinical Social Worker with over 10 years of experience working with adults with a broad range of mental health difficulties, including posttraumatic stress, loss and grief, depression, anxiety, relationship difficulties and more. My area of research and practice expertise has broadly focused on the field of trauma, which often entails working through associated grief, anxiety, mood, identity, and relationship difficulties concurrently.

I bring a down-to-earth, warm, and genuine approach to therapy. My style is open and supportive, committed to providing individuals with a safe space that honors their unique goals and expectations. Through a relationship built on trust, we’ll work together in a space where you feel comfortable to be who you are, helping you find ways to better understand, manage, or move forward from what challenges brought you to therapy. My hope is to make a difference in the life of every individual I work with, and I believe that therapy should not be a one-size-fits-all approach.

I use techniques from cognitive-behavioral, narrative, and relational models of intervention, including mindfulness, and while always incorporating a trauma-informed lens as I tailor the work to meet your unique needs. My clinical style is not to give advice but to support and empower individuals towards their goals with honesty and transparency. This can include developing healthy coping skills, processing grief or trauma from the past or present, exploring what you want in life both professionally and in relationships, and ultimately supporting you to reclaim your power and self-worth.


Lisa Henshaw, PhD, LCSW

Psychotherapist

I am a Clinical Social Worker with over 10 years...

Dawnmarie Sumners, WPCC, TICC

Position: Life Coach
Phone: (929) 560-2197
Email: dawnmarie.sumners@collaborative-therapy.com
Areas of Work: *Out of Network*, 12- Step Friendly, Addiction Counseling, Adolescent / Teen Issues, Adoption, Adults (25-64), Aging Parents, Agitation, Alcohol Use, Anger, Anger Management, Animal-Assisted Therapy, Anxiety Disorder, Anxiety Disorders, Art Therapy, Asexual, Attachment Theory, Behavior Modification, Bereavement / Grief Counseling, Betrayal Trauma, Body Image, Body Positivity/Health at every size, Body-Focused Therapy (ex: Tapping), Burnout, Career-Related Stress, Caregiver Burnout, Child, Childhood Trauma, Children (<13), Christian, Coaching, Coaching, Cognitive Behavioral Therapy - Insomnia (CBT-I), Community Violence, Compassion Fatigue, Complex Trauma, Couples (Relationship Therapy), Couples Conflict Resolution, COVID-19 Stress, Creative Blocks, Dance/Movement Therapy (DMT), Dating, Dementia, Depression, Dream Analysis, Dreams, Emotion Regulaton Therapy (ERT), Emotional Abuse, End of Life Challenges, Eye-Movement Desensitization and Reprocessing (EMDR), Family, Family Conflicts / Issues, Family Dynamics / Systems, Family Planning, Family Systems, Family Therapy, Family Therapy, Fear of Failure, Female Identifying, Gaslighting, Gay, Gay, Grief and Loss, Group Therapy, Group Therapy, Harassment, Health at Every Size, Health-Related Concerns, Indecision, Individual Therapy, Jewish, Lesbian, Level 1 Clinician, Life Coaching, Life Transitions, Life Transitions, Loneliness, Low Self Esteem, Male Identifying, Mentalization Based Treatment for Adolecents (MBT-A), Non-Binary, Nonreligious, Parenting, Peer Relationships, Personality Disorders, Physical Abuse, Physical Abuse Trauma, Play Therapy, Pre-College Fears, Pre-Move In Couples Counseling, Pregnancy, Pregnancy-Related Stress, Premarital Counseling, Premenopausal Symptoms, Recently Moved, Reiki, Relationship Struggles / Issues, Romantic Life, School Phobia, Self Esteem, Self-Reflection, Seniors (65+), Separation Anxiety, Sleep Problems, Social Anxiety, Social Life, Somatic Experiencing Practitioner, Somatic Therapy, Straight, Stress, Stress Management, Teen Violence, Teenagers/Adolescents (13-17), Trauma Therapy, Traumatic Grief, Vegan, Veterans, Walk and Talk Therapy or OutdoorTherapy, Weight Loss, Women's Health, Women's Issues / Obstacles, Women's Issues Therapy, Work-Related Counseling, Worry, Young Adulthood, Young Adults (18-24)
Location: Tele-Health/Virtual

Dawnmarie is a true believer in living as your authentic self. She is passionate about empowering people to become fully connected with who they are and who they can become. Dawnmarie advocates for you to use your voice and your talents to take steps forward. Dawnmarie utilizes her unique personality to create a secure connection with those she works with. She describes herself as positive, compassionate, empathetic, fun, creative, strong, intuitive, and passionate.

Dawnmarie is positive about life and encourages you to embrace a new perspective. She advocates for a “glass half full” mentality. Dawnmarie works with clients who want to embrace life, make changes, be heard, and find peace. Together you can achieve many things, develop a plan, and gain the tools to be successful. Whether it be your Professional or Personal life, together, we can master love, happiness, and a sense of SELF.


Dawnmarie Sumners, WPCC, TICC

Life Coach

Dawnmarie is a true believer in living as your authentic...