Dr. Mancilla is board certified in Family Medicine. She received her Doctor of Medicine from Universidad Autónoma de Guadalajara in Mexico. She completed her residency and internship in Family Medicine at Saint Francis Healthcare in Wilmington, Delaware and completed an additional internship at General Military Hospital in Guadalajara, Mexico. Her professional affiliations include the American Board of Family Medicine, the American Academy of Family Physicians, the Delaware Academy of Family Physicians and the Pennsylvania Academy of Family Physicians.