Cullen earned his bachelors in Spanish and Philosophy at the Ohio State University in 2012. Shortly after his time at Ohio State, he went to Capital University and graduated with his bachelor’s in nursing in 2015. Cullen worked as a registered nurse at the Ohio State University’s Brain and Spine Hospital for four years as he completed his MSN. In 2019, he certified as a primary care adult gerontology nurse practitioner. Cullen’s interest includes palliative and end of life care.