Meet Mosaic Mental Health
Healing minds, AND strengthening communities for over 65 years

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Roberta Solomon, LMSW Acting Executive Director

Roberta Solomon, LMSW, is a nonprofit leader with 25+ years of experience in mental health care. She has expertise in transitional and supportive housing as well as homelessness prevention. In her tenure, Roberta spearheaded a Clinical Integration Project to enhance the quality of care for residents with complex mental health and medical needs. Roberta holds a Master of Social Work degree from NYU, a certificate from Columbia Business School’s Senior Leaders Program, and a certificate in Executive Leadership for NYU’s Silver School of Social Work.

Donna Demetri Friedman, PhD, LCSW
Executive Strategist

Dr. Donna Demetri Friedman, Ph.D., is the executive strategist at Mosaic Mental Health. She is an expert in the area of mother-child attachment theory, a lecturer and adjunct associate professor at New York University, and a parenting consultant for the 92nd Street Y. Donna has been with Mosaic for over thirty years, starting as an intern in 1992.

Alan Felix, MD,
Medical Director

Dr. Alan Felix, MD, is the medical director of Mosaic Mental Health. He is a recognized expert in the use of clinical practice tools to transition individuals with serious mental illness back into the community. Dr. Felix was part of a team that developed evidence based critical time intervention to help formerly unhoused people remain stable. Alan has been with Mosaic since 2007.

The staff at Mosaic Mental Health share a commitment to supporting the mental wellness of all our clients and helping them lead independent, fulfilling lives. Our staff is led by two nationally renowned innovators, executive strategist, Donna Demetri Friedman, PhD, LCSW and Medical Director, Alan Felix, MD. The Peer Specialists who staff our Crisis Respite Center exemplify the success of our programs. These counselors have lived the mental health experience and bring a unique dimension of insight and compassion to Mosaic’s programs.

Clinical Directors

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Dawn Horath
Director of Crisis Residence

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Ana Brito
Associate Director of Residential Programs

Our History

Mosaic Mental Health
Healing Minds, Strengthening Communities Since 1959


Matthew Ies Spetter, Ph.D., guiding force behind Mosaic MH

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The roots of Mosaic Mental Health are closely bound with the humanist philosophies of the Riverdale-Yonkers Society for Ethical Culture and its Leader of 40 years, Dr. Matthew Ies Spetter, Ph.D. A survivor of Auschwitz and Buchenwald, Dr. Spetter escaped Nazi-occupied Europe and immigrated to the United States, where he became an ethics and philosophy lecturer, teacher, and leader of mental health and family counseling in Riverdale. After founding Riverdale Mental Health Association in 1959, Dr. Spetter served on its Board for many years following. Dr. Spetter passed away in 2012 at the age of 91, but his powerful influence lives on.

1959

Riverdale Mental Health Association (RMHA) is founded

2

Number of employees in 1959

88

Number of employees in 2016

1971

Joyce M Pilsner, MA becomes Executive Director of RMHA (now Mosaic MH)

2006

Robert M Brewster LCSW, becomes Executive Director of RMHA

2009

First Annual 5K Run

2017

Donna Demetri Friedman LCSW, MA, PhD becomes Executive Director of RMHA/Mosaic MH

2,000

Individuals were helped last year

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Awarded by NYC Department of Mental Health

2017

Riverdale Mental Health Association becomes Mosaic Mental Health

2024

Mosaic celebrates 65 years of helping families and individuals from all walks of life

Continue the Mosaic legacy

As our newest donor, your support will allow us to continue our 65+ year legacy of helping people with mental illness live productive, independent, fulfilling lives.