Dr. Kheirbek is a Professor of Medicine and the inaugural Division Head of Gerontology, Geriatrics, and Palliative Medicine at the University of Maryland School of Medicine in Baltimore, Maryland. She is board-certified in Internal Medicine, Geriatric Medicine, and Hospice and Palliative Medicine.

Dr. Kheirbek's primary focus is on developing and implementing quality improvement programs for older adults with serious and advanced illnesses. Her research portfolio includes numerous large-scale projects with a particular focus on the oldest segment of the global population.

In addition to her research work, Dr. Kheirbek plays a vital role in training numerous learners on age-appropriate, person-centered care. She currently serves as the Program Director of the Geriatric Fellowship at UMD, where she fosters empathy, reflection, and professionalism in the practice of medicine. 

Brie Williams is a physician trained in internal medicine, geriatrics, and palliative care. She integrates a public health and human rights perspective into justice reform, with a focus on improving the health and wellbeing of prison staff and people who are incarcerated by introducing international best practices designed to infuse principles of public health and human rights into places of detention. She leads educational experiences in public-health focused practices for prison healthcare and security staff; writes and lectures about the medical basis for ending solitary confinement; partners with community-based organizations and policy makers to improve compassionate release policies for incarcerated patients with serious illness; and conducts research and evaluation to optimize the response to disability, dementia, and serious illness in correctional settings.