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Marquita Williams, PhD

Psychologist | Strategist| Visionary

Dr. Williams has more than 30 years of experience working at the intersection of academia, public health, and community based mental health. 

Meet Dr. Marquita

Dr. Marquita C. Williams is a distinguished leader in the field of behavioral health and intellectual disability services. With over three decades of experience, Dr. Williams has dedicated her career to addressing complex societal challenges and promoting wellness for individuals and communities.

Currently serving as the Interim Commissioner for the City of Philadelphia’s Department of Behavioral Health and Intellectual disAbility Services (DBHIDS), Dr. Williams oversees a comprehensive network of providers offering essential treatment and support services. Her role entails managing initiatives aimed at addressing mental health issues, substance misuse, support for individuals with intellectual disabilities, and the impact of social determinants of health on behavioral wellness.

Dr. Williams is renowned for her systems-oriented approach to problem-solving. In her previous roles as the Senior Executive Advisor and Deputy Commissioner at DBHIDS, she facilitated direct dialogue between organizations, government agencies, community stakeholders, and provider groups to ensure inclusive policymaking and programming. Her efforts have led to innovative solutions and increased participation from diverse voices in shaping the city's behavioral health landscape.


"Transformational Behavioral Health Leadership is about fostering a culture of empathy, innovation, and collaboration to create meaningful change in individuals, communities, and systems, ensuring that every voice is heard and every need is addressed." ~ Dr. Marquita

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