Marion Mass, MD, is an urgent care pediatrician at Children’s Hospital of Philadelphia (CHOP). 

Dr. Mass has worked at CHOP since 2004, and in urgent care since 2017. Her favorite part of working in pediatric urgent care is being able to serve kids and their families “in a time of immediate need.” 

She enjoys navigating family dynamics in the clinical setting and is quick to reassure parents who judge themselves too harshly. “Being a modern parent is hard,” she says. “I always tell parents: don’t stress over things you aren't doing. Focus on the wonderful things you are doing for your children.”

When she’s not working, Dr. Mass is passionate about family activities that promote wellness, such as organic gardening, cooking and fitness.

CHOP’s pediatric Urgent Care Centers provide fast, convenient care for children and teens with non-life-threatening illnesses or injuries. Typically, these are situations when your child can’t wait until the pediatrician’s office is open, but they don’t need the resources of an emergency department (ED). Urgent Care Centers are staffed by board-certified pediatricians and pediatric nurses with expertise in caring for children with urgent healthcare needs. The facilities offer onsite X-rays and testing to help with fast diagnosis and treatment plans.

Learn about the difference between urgent care and ER services, when to choose each and how to find a pediatric Urgent Care location near you

Education and Training

Medical School

MD - Duke University, Durham, NC


Northwestern Children's Memorial Hospital, Chicago, IL

Board Certification

Pediatrics – American Board of Pediatrics

Titles and Academic Titles

Urgent Care Pediatrician