Mariellen was born and raised in Tyler, TX. She received her Bachelors of Science degree in Nursing from The University of Texas at Tyler in 2000. While working in various nursing roles, including ICU, ER, and Urgent Care, she later obtained her Masters of Science degree in Nursing as a Family Nurse Practitioner in 2005 from Texas A&M University Corpus Christi. During her training, she discovered her love of pediatrics and went on to serve as a nurse practitioner in urgent care and general pediatric settings. She joined TFCC Pediatrics in 2011 and enjoys serving the community where she grew up. In her time off, she enjoys spending time with her family and friends, traveling, cooking, and art.