
What happens when a parent knows something is off, but every test says their child is “fine”? In this episode of The Well Known Podcast, Shannon Conklin sits down with Mariel Nasis, founder of Integrative Pediatrics of Long Island, to explore what personalized pediatric care can look like when a practitioner has time to listen, connect the dots, and see the whole child. They discuss parent advocacy, gut health, nutrition, sleep, environmental exposures, individualized testing, and why helping kids thrive requires more than a one-size-fits-all approach.
What You’ll Learn
Understand why Mariel starts with the whole child—not just one symptom or one lab result.
Learn why listening to parents can uncover details that may otherwise be overlooked.
Explore how diet, sleep, stress, gut health, activity, and family habits can all be part of a bigger health picture.
Hear why supplements and detox protocols are not automatically the first step in Mariel’s approach.
Learn how parents can ask better questions, stay informed, and find practitioners who will listen.
If this conversation helped you think differently about your child’s health, share it with another parent who has ever felt unheard or unsure of what questions to ask. Like this episode, subscribe to The Well Known Podcast, and share it with someone who believes kids deserve care that helps them truly thrive.

Mariel Nasis-Matuza
Board-Certified Pediatric Nurse Practitioner - Integrative Pediatrics Long Island
Mariel Nasis-Matuza is a mom of 4 sons first and a board-certified pediatric nurse practitioner second. Specializing in pediatric medicine for nearly two decades, she started her nursing career at Winthrop Hospital on Long Island, NY (now NYU Langone) in both the pediatric intensive care unit and on the pediatric floor. She later earned her master’s degree at State University Stony Brook and now specializes in functional and integrative medicine with a holistic approach. Her private practice serves families from Montauk to Manhattan as well as numerous other states. Mariel loves children and often quotes Whitney Houston. Mariel believes “children are our future… teach them well,” feed them well, and let them lead the way! Mariel is dedicated to helping children not only grow but thrive so they can reach their full potential while educating and empowering parents, meeting families where ever they are on their health journeys.
Chapters
00:00 Meet Mariel Nasis of Integrative Pediatrics of Long Island
01:20 From traditional nursing to integrative pediatrics
03:10 Helping children thrive—not just grow
04:15 When parents know something is wrong but tests look normal
05:30 What “holistic” really means: looking at the whole person
07:20 The gut, mood, sleep and the bigger health picture
09:40 Why conventional and integrative medicine can work together
10:25 The problem with eight-minute appointments
11:15 Why children’s health looks different today
15:00 Genetics, MTHFR and individualized pediatric care
16:35 Parent advocacy vs. Dr. Google
19:20 Why one-size-fits-all wellness does not work
20:25 Testing, prioritizing and why the gut may come first
22:40 The 80/20 approach to healthy living
24:45 Are we approaching childhood health the wrong way?
25:10 Simple ways to create a healthier home
26:15 Why detox is not always step one
27:45 Making healthy habits a family affair
29:05 What a healthy immune response can look like
31:20 Why supplements are not automatically the first answer
32:15 What Mariel wants every parent to know
33:20 Why she still has hope for this generation
35:45 Mariel’s definition of wellness
The Well Known Podcast provides educational and informational content only and does not provide medical advice, diagnosis, or treatment. Views expressed by guests are their own. Always consult a qualified healthcare professional regarding medical concerns.
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