Bringing Zest:
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Saving Pediatrics
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The Zest multidisciplinary ecosystem empowers pediatricians to be the doctors they dreamed and to partner with parents in creating the healthiest, best lives for their children.
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Act with Nimble Innovative Grit
We challenge the status quo and embrace challenges with hard work and creative thinking.
Be Humble
We are self-aware, realize we are human, are approachable, and partner in decision making.
Grow Together
We maintain a growth mindset. We are intentional. We have each other’s back by fostering deep, trusting, and mutually respectful relationships.
Make them Smile
We make kids, parents, and pediatricians heroes by making their dreams a reality. We embrace a family-centered work environment and care delivery model.
Show Up and Own It
We are engaged and focused. We listen intently, are understanding, and ask appropriate clarifying questions. We honor our commitments.
The Zest Team
Physician Imagined. Physician Founded. Physician Led.
Our Physicians
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Hayley Hellstern, DO
Pediatrician
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Andrew Hertz, MD
President, Co-Founder, Pediatrician
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Megan Lynch-Ljubi, DO
Pediatrician
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Keili Mistovich, MD, MPH
Co-Founder, Pediatrician
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Michael Perisa, MD
Pediatrician
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Marisa Quattrone, MD
Pediatrician
Our Clinical Support Professionals
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Bridget Bowling
Certified Sleep Counselor
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Laura Cordero, RD
Dietician
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Nicole Hamed
Certified Parent Coach
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Jennifer Hyland, RD, CSP, LD
Dietician
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Lauren Lasko, APRN, IBCLC
Lactation Specialist
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Ashley Poklar, PhD, Med
Child Psychologist
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Nicole Ryan Suppes, RDN, LDN
Dietician
Our Founders
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Andrew Hertz, MD
President, Co-Founder, Pediatrician
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Justin Mistovich, MD, MBA
Co-Founder
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Keili Mistovich, MD, MPH
Co-Founder, Pediatrician
Our Advisors and Staff
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Joanna Alvarez
Digital Marketing Assistant
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Sue Grabowski
Advisor
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David Moore
Advisor
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Steve Weitzner
Advisor