

Chris Donnelly
With over 15 years of medical experience and 5 years as a flight nurse, Chris brings a unique blend of expertise, compassion, and innovation to the field of functional medicine. As a board-certified Nurse Practitioner (NP), Chris has spent years caring for patients in critical, high-stakes situations, honing an unparalleled dedication to providing the best possible care.
Now, as the co-founder of Mountainside Health and Aesthetics, Chris is passionate about helping others achieve their health and wellness goals by addressing the root causes of their concerns. Guided by the principles of functional medicine, he believes in empowering patients to take control of their health with personalized, holistic care.
Mission
“My mission is to help individuals achieve their best health and vitality—whether that means restoring energy, improving physical wellness, or simply feeling confident in their own skin. At Mountainside Health and Aesthetics, “we don’t just treat symptoms; we work together to uncover the ‘why’ behind them and create sustainable solutions for long-term wellness.”
Experience & Expertise
• 15+ Years in Medicine: Providing comprehensive care as an RN/NP in diverse clinical settings.
• 5 Years as a Flight Nurse: Gained extensive experience in critical care, emergency response, and patient advocacy.
• Functional Medicine Advocate: Passionate about helping patients achieve health goals through holistic, root-cause approaches.
• Advocate: Not only a believer in functional medicine but also practices the modalities in his own life.
• Expertise in therapies such as pEMF Therapy, Infrared Sauna, Hormone Replacement Therapy (HRT), peptide therapy, weight loss management, IV Therapy, and aesthetic treatments to combine inner health with outer confidence.
Philosophy
Chris is committed to treating each patient as a whole person, not just a set of symptoms. By integrating the latest in medical science with a personalized, patient-first approach, Chris aims to create lasting transformations for every individual who walks through the door.
Let’s work together to help you feel your best—inside and out.

Leslie Donnelly
With over 15 years of experience in ER and trauma care and 4 years as a flight nurse, Leslie has dedicated her career to providing compassionate, high-quality care in some of the most critical and fast-paced environments. Currently pursuing a degree as a Nurse Practitioner (NP), Leslie is expanding her expertise to offer a more comprehensive and holistic approach to health and wellness.
Mission
“My mission is to help individuals feel their absolute best—inside and out. By combining my passion for aesthetics and functional medicine, I strive to empower others to achieve their health and wellness goals, restore confidence, and live vibrantly.”
Experience & Expertise
• 15+ Years in Emergency Medicine: Extensive experience in high-pressure ER and trauma settings, specializing in acute care and critical interventions.
• 4 Years as a Flight Nurse: Skilled in providing life-saving care in challenging, high-stakes environments.
• Future Nurse Practitioner: Dedicated to advancing education and skills to better serve patients through holistic and personalized care.
• Passionate about integrating aesthetics and functional medicine to address both internal health and external beauty.
Philosophy
At the core of Leslie’s approach is a deep commitment to treating the whole person. Whether it’s improving skin health with aesthetic treatments or addressing root causes of fatigue, weight gain, or hormonal imbalances, she believes in empowering patients with tailored solutions for optimal wellness and confidence.
Let’s work together to help you look and feel your best at every stage of life.