Our Team
MEDICAL DIRECTOR, PROVIDER
Tobin Dennis, MD
Tobin Dennis brings a wealth of expertise and compassion to his longevity medicine practice, drawing from a diverse medical career and a lifelong commitment to health and wellness.
Born and raised in the town of Jackson, Wyoming, Dr. Dennis developed a deep appreciation for the natural world and an active lifestyle, which continues to inspire his approach to medicine. He pursued his medical education at the prestigious University of Washington, where he cultivated a passion for understanding the intricacies of human health.
After completing medical school, Dr. Dennis specialized in Emergency Medicine, thriving in the fast-paced and high-stakes environment of hospital care. His years in emergency medicine provided him with a profound understanding of acute medical conditions and the importance of proactive, preventative care. Recognizing the growing potential of personalized health strategies to enhance long-term well-being, Dr. Dennis transitioned to focus on longevity medicine—a field dedicated to optimizing health and vitality throughout life.
Dr. Dennis believes in an evidence-based approach, combining advanced diagnostics, tailored interventions, and lifestyle strategies to help his patients thrive. As a father of two, he understands the importance of balancing health, family, and personal growth, and he brings this perspective to his patient care.
Outside the office, Dr. Dennis stays active through his favorite hobbies: biking and skiing. Whether navigating trails on two wheels or carving fresh powder on the slopes, he embraces the same zest for life that he encourages in his patients.
Dr. Dennis is committed to empowering individuals to take control of their health journeys, ensuring they live longer, healthier, and more fulfilling lives.
PROVIDER
Katy Kearns, FNP
Katy Kearns is a Family Nurse Practitioner who has called Jackson home for the last 4 years. She grew up in a military family, which moved around frequently, and is from a little bit of everywhere. After completing a Bachelor's degree at Texas A&M University in Biomedical Sciences, she decided to pursue a career in nursing; she returned to school, earning her BSN from Texas A&M University-Corpus Christi. She spent the first few years of her professional career as a registered nurse in critical care in Houston, Texas.
After getting married to her husband, Jeff, they made the move to Jackson to be closer to some of Katy's Family, and fell in love with the mountain lifestyle, the outdoors and this amazing community. While employed locally as an ER nurse, she worked on her Master's of Science in Nursing from Purdue Global University. After graduating, she has transitioned to Urgent Care as a Family Nurse Practitioner. Her favorite things to do include traveling, baking, reading, and doing anything outside: hiking, mountain biking, skiing, scuba diving, and paddle boarding.
As a part of Grand Health, Katy's priority at the clinic is to take time to appreciate her patients as individuals and have open conversations that allow them to make informed decisions about their health goals. Her personal philosophy as a provider is helping patients find a balance between healthy lifestyle choices while still being able to do the things that make life worth living. A personal and professional passion is providing equitable care to women in all stages of life.
PHYSICAL THERAPY
Gillian Berrian, PT, DPT, OCS
Gillian has called Jackson Hole home for nearly 20 years and has practiced as a Doctor of Physical Therapy here for the past decade. She understands firsthand what it takes to stay strong, active, and capable in a place where movement is part of daily life.
Her approach blends evidence-based care with a broader focus on longevity—helping clients recover from injury, build strength, and optimize their health in a way that supports the activities and passions that matter most to them. She works with individuals of all ages and activity levels, helping them build a strong, sustainable foundation for long-term health.
Outside the clinic, you’ll find Gillian hiking, mountain biking, and skiing. She also enjoys adventuring outdoors with her husband and dogs in this beautiful place we call home.
NUTRITIONAL HEALTH
Eden Morris, MS, RD, LD
Eden Morris is a Registered Dietitian (RD), Licensed Dietitian (LD), and Certified Intuitive Eating Counselor who specializes in sports nutrition, eating disorder treatment and prevention, and Intuitive Eating. She holds a BA in Psychology from Texas A&M University and an MS in Nutrition and Dietetics from Georgia State University.
Eden takes a weight-inclusive, anti-diet approach to health, helping individuals build sustainable habits that support physical, mental, and emotional well-being. She believes that true health is not achieved through restriction or rigidity, but through adequate nourishment, balanced movement, and a strong connection to one’s body. Her work focuses on helping clients improve energy levels, support metabolic and hormonal health, strengthen their relationship with food, and feel more confident in their day-to-day choices.
Committed to a collaborative, team-based model of care, Eden values working alongside physicians, therapists, and other providers to support the whole person. She blends clinical expertise with lived experience, and she aims to empower clients to move away from fear-based health decisions and toward a way of living that is grounded, resilient, and sustainable.
PHYSICAL FITNESS AND MOBILITY
Scott Smith
Scott is a passionate health coach and personal trainer dedicated to helping individuals achieve vibrant health and lasting vitality. He works closely with clients to build personalized fitness programs that not only enhance strength and endurance but also sustainable habits, stress management, and recovery practices to improve mental clarity and resilience. Committed to fostering long-term transformation, Scott believes that true health is a balance of physical vitality and mental strength.
Whether you're looking to increase energy, enhance physical performance, or age gracefully, Scott is your trusted partner in the journey toward a longer, healthier life.
RECEPTION AND EQUIPMENT MANAGER
Holly Dennis
Holly brings a ‘let’s get this done, but with some fun’ attitude to Grand Health. Holly grew up in Florida where she played collegiate tennis and spent every free moment exploring the St. John’s river. Holly has been a veterinary technician for over 20 years first specializing in emergency and critical care, and then canine rehabilitation with a focus on neurological patients. She continues to enjoy working in veterinary medicine part-time in Wilson.
Holly discovered her passion of helping others reach their fitness goals after having her children. Holly has completed a variety of certifications in group fitness, personal training, and bone densitometry. She is excited to be part of the healthcare team to help cheer on and encourage patients to continue their journey into health optimization.