Dr. Willis received his Ph.D. from the Clinical Psychology program at the University of North Carolina at Chapel Hill, and completed an APA-accredited internship at Montefiore Hospital/Albert Einstein College of Medicine. He completed postdoctoral research training at Columbia University’s School of Social Work and University of Pennsylvania’s School of Social Policy and Practice, and he completed postdoctoral clinical training working with children and adults at Madison Park Psychological Services in New York City. Dr. Willis joined the faculty of the Clinical Psychology program at the University of Maryland, College Park in 2023. His research interests include exploring the relationship between online and offline racial discrimination and mental health outcomes, understanding sociocultural protective factors (i.e., racial identity) and how they impact psychopathology (e.g., depression, anxiety, OCD, PTSD, prolonged grief, etc.) within African Americans, creating cultural adaptations of evidence-based treatments, and utilizing mobile-health and other novel technologies to increase access to mental health treatments for underserved populations. Dr. Willis serves as a primary mentor to research graduate students.

I will NOT be reviewing doctoral applications for the upcoming Fall 2025 semester.

Areas of Interest

  • Interpersonal and Online Racial Discrimination
  • Racial Identity
  • Culturally-Adapted Mental Health Treatments and Assessments
  • Mental Health Disparities
  • mHealth for Black Communities
  • Grief

Doctoral Programs

  • Clinical


  • PhD
    Clinical Psychology - Quantitative Psychology Concentration, UNC Chapel Hill
  • MA
    Clinical Psychology, UNC Chapel Hill
  • MA
    Clinical Psychology, Teachers College, Columbia University
  • BS
    Psychology, Howard University

Current Students

Former Students

Related Students (Listed by Student on Student's Profile)

  • Timothy Simmons
2123M Biology-Psychology Building
Department of Psychology
hawillis [at] umd.edu