About Us

Bio

Meet Heather, Founder of Teleios Functional Wellness
Heather Bertolero is the founder of Teleios Functional Wellness, PLLC and a board-certified nurse practitioner with a deep passion for helping individuals feel their best—physically, mentally, and hormonally. She began her career in 2008, specializing in dermatology at a high-volume private practice in New Jersey. There, she served not only as a dermatology-certified nurse practitioner but also as the Director of Nursing for the practice’s surgical center.
Early in her career, Heather quickly recognized how much lifestyle, nutrition, and stress influence long-term health outcomes. That insight led her down the path of functional medicine—a journey that has spanned more than a decade of advanced training in hormone optimization, longevity medicine, and root-cause healing.
Today, Heather brings her expertise to Teleios Functional Wellness, a virtual and hybrid practice designed to support individuals seeking personalized care for hormone balance, metabolic health, chronic fatigue, gut dysfunction, and healthy aging. Her approach is grounded in science, compassion, and the belief that the body is designed to heal when given the right support.
As a wife, mom, and health enthusiast herself, Heather practices what she preaches. She’s committed to her own wellness journey and passionate about showing others that optimal health is within reach—regardless of age or stage of life.
Smiling woman outdoors — wellbeing and confidence
Heather holds numerous certifications, including:
At Teleios, Heather combines clinical excellence, functional medicine insight, and a whole-person approach to help you optimize your health, restore your energy, and feel empowered in your body.

Teleios Functional Wellness, PLLC was born out of a belief that true healing doesn’t happen in 7-minute appointments or one-size-fits-all protocols. “Teleios,” a Greek word meaning “complete, whole, or mature,” embodies our mission—to guide patients toward complete wellness, not just the absence of disease.

Our Approach

At Teleios, we don’t just treat labs—we treat you.
Every patient receives a thorough exploration of their history, lifestyle, and biology. Using advanced testing, we uncover what’s truly happening beneath the surface.

From there, we design a personalized plan built around your unique goals—whether that’s:

This is wellness that works.
Science-backed, individualized, and built to last.

What We Specialize in:
Donna Gannon
INHC, CSNC, CPT, 500RYT , LE

Donna is a dual-certified nutrition & health coach that is passionate about holistic health & beauty. She uses her knowledge in skincare, fitness and nutrition to help people feel their best inside and out. She is also an advocate of regenerative agriculture and believes that soil health is a key to our health and the health of our planet. 

Donna’s certifications include: