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Nutrition Certification

Learn about Jill Castle, her nutrition certification, qualifications and experience in pediatric nutrition. As a registered dietitian (RD) and pediatric nutritionist, Jill cares for children aged birth to teen.

Nutrition Certification for Pediatric Dietitian & Feeding Expert Jill Castle, MS, RDN

Jill Castle’s Bio

Jill Castle is one of the nation’s premier child nutrition experts. Known as a paradigm shifter who blends current research, practical application and common sense, Jill inspires parents and audiences to think differently about child nutrition and feeding kids.

A sought-after speaker, advisor, and media contributor, Jill has inspired TEDx, government, medical and parent audiences. She serves as an Expert Medical Reviewer for and a handful of privately held child nutrition companies.

She is the author of several books, including The Smart Mom’s Guide to Healthy Snacking, Try New Food, The Smart Mom’s Guide to Starting Solids, Eat Like a Champion, and co-author of Fearless Feeding. She pens The Nourished Child blog, is the voice behind a popular podcast of the same name, and is a past contributor to US News & World Report’s For Parents.


Nutrition Certification, License & Registration

  • Licensed Dietitian/Nutritionist, State of Massachusetts (2023 – present)
  • Certified Dietitian/Nutritionist, State of Connecticut (2013 – present)
  • Licensed Dietitian/Nutritionist, State of Tennessee (2008 – 2012)
  • Dietitian Certification, State of Indiana (2007)
  • Certified Nutrition Support Dietitian (1992 – 2002)
  • Dietetic Registration, #723566 (1990 – present)

Professional Experience

  • Consultant, Southwest Dairy Association
  • Nutrition Advisor, Needed
  • Nutrition Advisor, Ingenuity Foods (Brainiac Kids)
  • Advisor, Parents magazine
  • Speaker’s Bureau, The Beef Check-Off
  • Blogger Network, New England Dairy & Food Council
  • Contributor, US News & World Report For Parents blog
  • Creator, The Nourished Child podcast
  • Pediatric Nutrition Private Practice, Jill Castle Nutrition LLC
  • Advisor, Once Upon a Farm, LLC
  • Food Allergies Expert,
  • Writer, US Rowing website
  • Writer, USA Swimming
  • Creator & Editor, The Nourished Child blog
  • Owner, Pediatric Nutrition of Green Hills, LLC, Nashville, TN
  • Sr. Clinical Pediatric Dietitian, Univ. of Massachusetts Medical Center, Worcester, MA
  • Nutrition Support Dietitian, The Children’s Hospital, Boston, MA
  • Clinical Pediatric Dietitian, Massachusetts General Hospital, Boston, MA

Professional Memberships & Activities

  • Consumer Protection & Licensure Task Force, Academy of Nutrition & Dietetics
  • A.N.D. Representative, Youth Sports Safety Alliance
  • Chair, Public Policy, Pediatric Nutrition Practice Group, A.N.D.
  • Co-Chair, Public Policy, Pediatric Nutrition Practice Group, A.N.D.
  • Chair, Public Relations, Pediatric Nutrition Practice Group, A.N.D.
  • Co-Chair, Public Relations, Pediatric Nutrition Practice Group, A.N.D.
  • Member, Sports, Cardiovascular, and Wellness Nutrition DPG
  • Member, Weight Management DPG
  • Public Relations Chair, Nashville District Dietetic Association
  • Member, Nashville District Dietetic Association
  • Board Member, Eating Disorder Coalition of Tennessee
  • Member, Tennessee Dietetic Association
  • Member, Nutrition Entrepreneurs Didactic Practice Group
  • Member, American Society for Parenteral and Enteral Nutrition
  • Member, Didactic Practice Group (DPG) for Dietitians in Pediatric Practice
  • Member, Academy of Nutrition and Dietetics (A.N.D.)