About Nutritional Health Systems

Nutritional Health Systems, located in Newtown Square, PA and Center City of Philadelphia offers nutritional counseling in Eating Disorders, Sports Nutrition, Weight Management, Medical Nutrition Therapy, and General Nutrition.

Nutritional Health Systems offers patients the opportunity to enhance their quality of life through health-promoting dietary and nutritional practices. Our professionally trained dietitians assist patients in changing unhealthy eating behaviors and in developing a balanced diet for life. Nutritional Health Systems prides itself on providing a high quality of patient care, interactive nutritional planning tailored to patient’s needs and positive goal-oriented outcomes delivered in a compassionate and supportive environment. Nutritional Health Systems dietitians are committed to helping individuals find dietary solutions for life.

Director of Patient Care

Tara Simpson, RD, CSSD, LDN

Tara is a well-regarded expert in the field of eating disorders, sports nutrition, and nutritional counseling. Tara is the founder of Nutritional Health Systems, a nutrition consulting company based in the Philadelphia area. Started in 2003, Nutritional Health Systems provides nutrition programs and nutritional counseling to a wide variety of patients.

Tara earned her Bachelor of Science degree in Nutrition and Dietetics, graduating Summa cum laude from Rutgers University. Following her undergraduate studies, she completed her clinical training at Brigham and Women’s hospital in Boston, MA in their highly competitive dietetic internship. Tara is a registered dietitian (RD) and licensed in the state of Pennsylvania (LDN). She is also a certified specialist in sports dietetics (CSSD). She is a member of the American Dietetic Association and of the Sports, Cardiovascular, and Wellness Nutritionists (SCAN) practice group.

Tara has extensive experience and specializes in the areas of eating disorders and sports nutrition. In addition to her experience as an outpatient dietitian, she has 7 years of experience as both a staff and lead dietitian in the inpatient eating disorder setting. During this tenure, Tara designed meal plans, facilitated nutrition groups, and counseled and guided thousands of patients with eating disorders toward their recovery and a healthier lifestyle.

As a sports nutritionist, Tara has counseled athletes at the high school, collegiate, amateur, and professional levels in a variety of sports. She has motivated and assisted countless athletes and active individuals in maximizing their performance through nutrition.

Tara swam competitively at the Division I level in college. She is currently active in the sport of triathlon and competes in the sprint, ½ Ironman, and Ironman distances.

Lead Dietitian

Amy Stankiewicz, RD, LDN

Amy began her career as an inpatient dietitian, working at Penn Presbyterian Hospital and St Christopher’s Hospital for Children. More recently, Amy was the Clinical Director of Nutrition at Seeds of Hope Eating Disorder Treatment Center in center city Philadelphia. She provided eating disorder nutritional counseling to patients in the intensive outpatient and partial hospitalization programs. This extensive experience in the treatment of eating disorders makes her a perfect fit for our team.

Amy earned her Bachelor of Science degree in Nutrition and Dietetics from West Chester University of Pennsylvania. She completed her dietetic internship at East Carolina University. Amy is a Registered Dietitian (RD) and licensed in the state of Pennsylvania (LDN).

Nutritional Counseling, Eating Disorders, Sports Nutrition, Weight Management, Medical Nutritional Therapy
Nutritional Health Systems: King of Prussia, PA, Newtown Square, PA, South New Jersey (PA, DE, NJ)


Coco Ellis MS, RDN, LDN

Coco completed her undergraduate studies at Clemson University. Upon graduation, Coco joined Teach for America and spent two years teaching in an inner-city middle school. After making the connection that her students’ academic performance was being impacted by their poor nutrition, she decided to change careers and pursue a master’s degree in Human Nutrition at Drexel University. While at Drexel, Coco worked as a Performance Nutrition Assistant in the Center for Nutrition & Performance, where she helped to educate Division I athletes on the principles of sports nutrition and assisted in the development and implementation of nutrition-related programming for the professional soccer team the Philadelphia Union. After earning her Master’s, Coco completed her clinical training at Brigham and Women’s Hospital in Boston, MA in their highly competitive dietetic internship where she was awarded the Mary Ellen Collins, MED, RD Outstanding Dietetic Intern Award.

A lifelong athlete, Coco strives to teach athletes and active individuals how to use nutrition as a tool to enhance their performance. Additionally, she is passionate about helping her clients develop a balanced relationship with food and dispelling nutrition myths.