Our Medical Team

Dr. Nelson is a graduate of Northwestern Medical School and did her pediatric training at Children’s Memorial Hospital in Chicago. She completed her fellowship training in Gastroenterology, Hepatology and Nutrition at Boston’s Children’s Hospital and Massachusetts General Hospital at Harvard Medical School. She also received a Master’s of Public Health at the Harvard School of Public Health.


For the first ten years of her career, Dr. Nelson worked in the academic practice at Children’s Memorial Hospital. There she established herself as an expert in pediatric gastroesophageal reflux disease (GERD) publishing many papers on that subject. She also was a leader in understanding dietary treatments for eosinophilic esophagitis.

In 2004 Dr. Nelson began a solo private practice and founded Children’s Gastroenterology Specialists. She made this change so she could have more control over caring for her patients giving them the best medical care possible. In 2017 she joined PediaTrust so that she could relieve herself from the business aspects of her practice and focus on the clinical side. She continues to serve on staff at both Lurie Children’s Hospital. She is an Assistant Professor of Clinical Pediatrics at the Feinberg School of Medicine.

While in private practice she has continued to publish papers on GERD, eosinophilic esophagitis and inflammatory bowel disease. She co-authored the book Cooking for your Gluten Free Teen: Everyday Foods the Whole Family will Love (Andrews McMeel Publishing, LLC, 2013).

Dr. Nelson is married and has two wonderful daughters, as well as one somewhat naughty cat. She enjoys working out, travelling and going to the theatre.

Marisa is a nutritionist with a wealth of experience. She started working with PediaTrust in the fall of 2015. Prior to that, she worked at Ann & Robert H. Lurie Children’s Hospital treating children with a variety of medical conditions for 10 years. Marisa has a Bachelor’s of Applied Health Science in Dietetics from Indiana University, a Masters of Public Health from Benedictine University, and a certification in Childhood Adolescent Weight Management. She is a Registered and Licensed Dietitian Nutritionist and a member of the American Dietetic Association (ADA). She loves working with families to meet their nutritional goals. Outside of work, Marisa loves to spend time with her two boys and husband doing anything fun and active outside.


Prior to working at PediaTrust, Devi worked in an inpatient pediatric unit so understands many aspects of pediatric care. Helping patients and their families understand their medical issues and feel confident with the management of their health care issues are Devi’s priorities. In her free time Devi enjoys running and cooking.


Dr. Shauna Freedman is a child psychologist at Primary Care Psychology Associates, LCC (PCPA). She obtained her Doctorate in Clinical Psychology from The Chicago School of Professional Psychology with a specialization in children and adolescents. Dr. Freedman has extensive experience working with children, adolescents, and families with Inflammatory Bowel Disease and other gastrointestinal disorders. She completed her doctoral dissertation on the psychosocial aspects of Inflammatory Bowel Disease and designed a group program addressing these aspects. Dr. Freedman utilizes a strength-based, playful, and warm approach when working with children and adolescents. She enjoys traveling and spending time with her husband, family, and friends.


Smita is owner and feeding therapist at Assential Therapies Inc. She graduated with a Masters in Speech Language Pathology from Southwest Missouri State University. Since than she has worked in a variety of work settings including pediatric outpatient clinics, early intervention, school and facilities for the developmental delayed. She specializes in treating feeding and swallowing disorders in children. Smita understands that feeding problems are very disruptive to a family and develops a custom made program to suit the needs of each individual child and family. Smita enjoys reading, sketching, and spending time with her family.


Karla comes to us from the billing department at PediaTrust so understands many aspects of clinical practice. She is very organized which helps the office runs smoothly and makes it a priority to schedule patients so they don’t have to wait if they are in need of care. In her spare time she enjoys playing soccer, working out and spending time with her daughter.


Patty has worked in healthcare since 2001. She has worn several hats as a receptionist, medical assistant, medical scribe and biller. Patty believes it is important that patients receive the best care possible and feels it is her job to make it happen. She enjoys working out doing CrossFit and loves to spend time with family and friends.