It’s not about us

We still feel it’s important for you to know who we are and what we do

Meet The Team

We believe it “takes a village” for a community to thrive. Our team took their experiences in education and life and created Collaborative to tackle even the most toughest of challenges.

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

Miriam Kassow, MS, LMSW

Position: Psychotherapist
Phone: (929) 930-6948
Areas of Work: Accelerated Experiential Dynamic Psychotherapy (AEDP), Acceptance Commitment Therapy (ACT), Adaptive Mentalization based integrative treatment, Adjustment Disorder, Adolescent / Teen Issues, Adolescent Addiction / Substance Use, Adult Psychotherapy, Adults (25-64), Aging Parents, Alcohol Use, Anger, Anger Management, Anxiety Disorder, Art Therapy, Artist-Related Stress, Attachment Disorder, Attachment Theory, Autism Spectrum Disorder, Behavioral Issues / Problems, Behavioral Therapy, Bereavement / Grief Counseling, Biofeedback Treatment, BIPOC Mental Health Issues, Bipolar Disorder, Bisexual, Body-Focused Repetitive Behavior (BFRB), Body-Focused Therapy (ex: Tapping), Buddhist, Bullying, Canabis Use disorder, Career-Related Stress, Caregiver Burnout, Childhood Trauma, Christian, Chronic Illness, Chronic Pain, Cigna, Client Centered Therapy/Rogerian Therapy, Cognitive-Behavioral Therapy (CBT) , Community Violence, Compassion Fatigue, Compassion Focused, Complex Trauma, Confidence Issues, Coping Mechanism Development, COVID-19 Stress, Cultural Competence, Cultural Diversity Issues, Culturally Sensitive, Dating, Depression, Dialectical, Dialectical Behavioral Therapy (DBT), Dual Diagnosis, Early Childhood Trauma, Emotional Abuse, Emotional and Behavioral Disorders, Emotional Disturbance, Ex-Cult Support, Existential Anxiety, Existential Crisis or Transition, Family Conflicts / Issues, Family Dynamics / Systems, Family Planning, Family Systems, Family Therapy, Fear of Failure, Female Identifying, Fertility / Infertility, Gay, Gender Dysphoria, Generalized Anxiety Disorder (GAD), Grief and Loss, Group Therapy, Harassment, Harm Reduction Therapy, Hindu, Hyperactivity Disorder (ADHD), Immigration, Imposter Syndrome, Individual Therapy, Intergenerational Trauma, Internal Family systems (IFS), Intervention, Intrusive Thoughts, Irrational Fears, Jewish, Jungian Psychotherapy, Learning Disabilities, Lesbian, Level 2 Clinician, LGBT Care, LGBTQIA+, Low Self Esteem, Medical Trauma, Medication Management, Medication Management, Mentalization Based Treatment, Mentalization Based Treatment for Adolecents (MBT-A), Mid-Life Crisis, Migraines / Chronic Headaches, Mindful-Based Therapy, Mood Disorder/Mood Swings, Motivational Interviewing (MI), Multicultural Therapy, Muslim, Natural Disasters, Non-suicidal Self-Injury, Nonreligious, Obsessive Compulsive Disorder (OCD), Peer Relationships, Perfectionism, Performance Anxiety, Person Centered (Rogerian), Personality Disorders, Post Traumatic Stress Disorder (PTSD), Pre-College Fears, Procrastination, Prolonged Grief Disorder (PGD), Psychodynamic Therapy, Queer, Queer-Competent, Questioning, Race-Related Stress, Racial Justice Framework, Reactive Attachment Disorder (RAD), Recently Moved, Refugee Trauma, Relationship Struggles / Issues, Romantic Life, Rumination, Safety Planning, School Phobia, Seasonal Affective Disorder (SAD), Self Esteem, Self-Harm / Injury, Self-Reflection, Seniors (65+), Separation Anxiety, Sex Positive/Kink Friendly, Sexual Abuse, Sexual Fear, Sexual Identity, Sexuality, Sibling-Related Stress, Sleep Problems, Social Anxiety Disorder, Social Justice, Social Skills Training (SST), Somatic Experiencing Practitioner, Somatic Therapy, Spirituality, Spiritually Integrated Psychotherapy (SIP), Strength-Based, Strength-Based Therapy, Stress, Stress Management, Suicidal Feelings, Suicidal Ideation, Teenagers/Adolescents (13-17), Thought Disorders, Trans-Competant, Trauma / Trauma Focused, Trauma Therapy, Trauma-Focused Cognitive Behavioral Therapy (TF-CBT), Traumatic Grief, Trichotillomania/Body-Focused Repetitive Disease, Veterans, Vulnerability, Walk and Talk Therapy or OutdoorTherapy, Weight Loss, Women's Health, Women's Issues / Obstacles, Worry, Young Adults (18-24)
Location: 5th Avenue, Tele-Health/Virtual

Miriam (She/Her) is a licensed psychotherapist. Originally from West Hartford, CT, Miriam has called New York City her home for the past 10 years. Her practice as a clinician is deeply rooted in empathy and compassion for all clients. Miriam believes that the client is the expert of their own lived experience, and that her role as a therapist is to help the client understand themselves and their lives more deeply and meaningfully. Pulling from several different modalities and orientations such as attachment-focused work, psychodynamic theory, Cognitive Behavioral Therapy and Dialectical Behavior Therapy, Miriam is passionate about supporting her clients to find agency in leading the lives they aim to live. Miriam considers herself a life-long student above all else and is constantly seeking to expand her knowledge and expertise as a clinician.

Miriam’s approach has worked well for various needs, including (but not limited to) survivors of trauma, mood and anxiety disorders, body-focused repetitive behaviors, and those seeking to explore their sexuality and/or gender.

Outside of her practice, Miriam loves to read, practice yoga, explore New York City on foot, and perfect new recipes in her Brooklyn kitchen. Miriam also loves to sing and performs as a cantorial soloist. She received her graduate degree in social work from New York University and her undergraduate degree in International Studies with a Peace and Conflict concentration from Muhlenberg College.

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Miriam Kassow, MS, LMSW


Miriam (She/Her) is a licensed psychotherapist. Originally from West Hartford,...

Hanni Flaherty, PhD, LCSW-R, CASAC

Position: Founder & Social Work President
Phone: (929) 362-4913
Areas of Work: *Out of Network*, Addiction Counseling, Adult Psychotherapy, Adults (25-64), Afflictions, Anxiety Disorder, Attachment Theory, Attachment-Based Family therapy (ABFT), Behavior Modification, Behavioral Therapy, Bereavement / Grief Counseling, Burnout, Career-Related Stress, Child and Parent Interaction Therapy, Client Centered Therapy/Rogerian Therapy, Cognitive Behavioral Therapy for Psychosis (CBT), Coping Mechanism Development, Costs/Insurance, Couples (Relationship Therapy), Couples Conflict Resolution, COVID-19 Stress, Crisis Intervention, Culturally Sensitive, Depression, Dialectical Behavioral Therapy (DBT), Drug Use, Dual Diagnosis, Family, Family Conflicts / Issues, Family Dynamics / Systems, Family Systems, Family Therapy, Family Therapy, Female Identifying, Founders Level, Group Therapy, Group Therapy, Harm Reduction Therapy, Humanistic Therapy, Individual Therapy, Integrative Psychotherapy, Internal Family systems (IFS), Interpersonal, Jewish, LGBT Care, LGBTQIA+, Light Assisted Therapy, Male Identifying, Mental Health Consultation, Mentalization Based Treatment, Mentalization Based Treatment for Adolecents (MBT-A), Mid-Life Crisis, Mood Disorder/Mood Swings, Motivational Enhancement Therapy (MET), Motivational Interviewing (MI), Multicultural Therapy, Narcissistic Personality, Non-Binary, Non-suicidal Self-Injury, Non-Traditional Romantic Stress, Open Relationships/Non-Monogomy, Parent-Child Interaction (PCIT) Person-Centered, Parenting, Peer Relationships, Person Centered (Rogerian), Positive Psychology, Post-Traumatic Stress Disorder (PTSD) Counseling, Pre-Move In Couples Counseling, Pregnancy-Related Stress, Premarital / Marital, Premarital Conflict Resolution, Psychoanalytic and Psychodynamic Therapy, Quarter-Life Crisis, Queer-Competent, Racial Justice Framework, Relapse Prevention Therapy, Safety Planning, Schema Therapy, Self Esteem, Self-Harm / Injury, Sex Worker Positive, Social Anxiety, Solution-Focused Brief Therapy (SFBT), Strength-Based Therapy, Stress Management, Structural Family Therapy, Teaching, Teenagers/Adolescents (13-17), Trans-Competant, Transitioning, Trauma / Trauma Focused, Trauma Therapy, Trauma-Focused Cognitive Behavioral Therapy (TF-CBT), Veterans, Women's Issues / Obstacles, Young Adults (18-24)
Location: 5th Avenue, New York, Tele-Health/Virtual

Hanni (She/Her) is a New York City-based Clinical Social Worker specializing in adolescents, young adults, and families. Over the past 10 years, she has worked with clients who struggle with a wide range of issues. Her areas of expertise include treating adolescents and young adults with family conflict, substance use, high-risk behaviors, self-harming behaviors, anxiety, depression, mood disorders, personality disorders, trauma, bullying, gender, and sexuality struggles.

Her practice uses a Cognitive Behavioral Treatment approach that takes into consideration each person’s strength and experience. She has a Ph.D. in clinical social work, an LCSW-R, and a CASAC. She is also trained in Trauma-Focused Cognitive Behavioral Therapy, Motivational Interviewing, and Family Structure Therapy. In addition, she is a Certified Addiction and Substance Abuse Counselor (CASAC) and New York State DUI evaluator.

Her treatment style encompasses open and honest communication to help clients achieve their goals through short-term treatment, long-term treatment, family therapy, and group treatment. Through the development of a strong therapeutic alliance, they work together to develop effective coping skills. In treatment, she strives to create a safe, understanding, and collaborative atmosphere where her clients can share their emotions and explore their struggles. They all have the ability to overcome obstacles and achieve their goals. Therapy should be a helpful force in achieving life goals and overcoming life struggles.

Hanni Flaherty, PhD, LCSW-R, CASAC

Founder & Social Work President

Hanni (She/Her) is a New York City-based Clinical Social Worker specializing...

Now Accepting Cigna/Evernorth and Fidelis Care!