About
Dr. Delene Musielak is a triple board-certified physician practicing in Creve Coeur, Missouri. She holds certifications in Internal Medicine, Pediatrics, and Obesity Medicine. She earned her Bachelor of Science at Stony Brook University in New York and her medical degree at Ross University School of Medicine. Her residency training was a four-year combined Internal Medicine and Pediatrics program at the University of Missouri - Columbia. After welcoming triplets, she and her husband relocated to St. Louis to be closer to family.
Beyond her core training, Dr. Musielak pursued extensive study in Functional and integrative medicine. That background shapes her goal of treating mind, body, and spirit together. She treats patients from newborn through end of life, spanning the full arc of family health. She serves as Associate Program Director of the residency program at St. Luke's Hospital. Her work has earned recognition including the 2021 Mrs. Missouri Woman of Achievement award and the 2019 MizCEO Author of the Year Award. She hosts the podcast 'The Dr. Mom Show' and is an international best-selling author and wellness speaker. Outside the office, she enjoys traveling, trying new foods, and playing sports with her kids.
Education & Training
Undergraduate
Stony Brook University, B.S.
Medical School
Ross University School of Medicine
Residency
Combined Internal Medicine and Pediatrics, University of Missouri – Columbia
Additional Training
Extensive training in Functional Medicine and integrative medicine
Certifications
Conditions Treated
Who is Dr. Musielak right for?
Dr. Musielak is a strong fit for families who want one physician to care for every member, from newborns to grandparents. Adults managing chronic conditions like diabetes, thyroid disorders, metabolic syndrome, or high blood pressure benefit from her integrative approach. Patients seeking root-cause answers rather than symptom management will find her Functional Medicine training especially relevant. Her Obesity Medicine certification makes her an effective partner for adults and children pursuing medical weight loss. She also serves patients with ADD/ADHD, polycystic ovarian syndrome, and pre- or post-pregnancy weight concerns.
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Frequently Asked Questions
Dr. Musielak treats a broad range of conditions across Internal Medicine, Pediatrics, and Obesity Medicine. Her clinical focus includes diabetes, heart disease, high blood pressure, high cholesterol, thyroid disorders, metabolic syndrome, lipid disorders, polycystic ovarian syndrome, sleep disorders, and ADD/ADHD. She also manages lung disease, joint conditions, respiratory illnesses, and pre- and post-pregnancy weight concerns. Her Functional Medicine training lets her look for root causes alongside standard diagnosis and treatment.
Yes. Dr. Musielak holds triple board certification in Internal Medicine, Pediatrics, and Obesity Medicine. She also maintains memberships in the American College of Physicians, the American Academy of Pediatrics, and the Obesity Medicine Association.
Yes. Dr. Musielak cares for patients from birth through end of life. She sees newborns, children, adolescents, and adults, including elderly patients who may need end-of-life home visits. Families can choose her as a single physician for every generation under one roof.
Dr. Musielak takes a medically supervised approach to weight loss for both adults and children. Her Obesity Medicine board certification supports clinical programs that combine nutrition education, exercise counseling, and treatment of underlying metabolic factors like lipid disorders, thyroid dysfunction, and metabolic syndrome. She addresses pre- and post-pregnancy weight as well.
Dr. Musielak pursued extensive additional training in Functional and integrative medicine after completing her residency. She uses that foundation to look beyond symptoms and identify underlying drivers of disease. Her goal is to treat each patient as a whole person, considering mind, body, and spirit together rather than managing conditions in isolation.
Dr. Musielak earned her Bachelor of Science at Stony Brook University in New York and her medical degree at Ross University School of Medicine. She then completed a four-year combined Internal Medicine and Pediatrics residency at the University of Missouri - Columbia. She later added extensive training in Functional and integrative medicine.
Yes. Dr. Musielak handles the full scope of pediatric care, including newborn care, well-child exams, developmental assessments, immunizations, sports physicals, and management of ADD/ADHD. Her combined residency in Internal Medicine and Pediatrics gives her deep clinical grounding in childhood and adolescent health.
Dr. Musielak has earned several awards throughout her career. These include the 2021 Mrs. Missouri Woman of Achievement, the 2019 MizCEO Author of the Year Award, and the 2018 Best Physician of the Boro for Internal Medicine in Statesboro, Georgia. She also took first place in the Quality Improvement category at the American College of Physicians Regional Conference in 2011. Media outlets including Forbes Health, Parents Magazine, ABC, and KSDK News have featured her work.
Doctor profile last updated April 10, 2026
