Our Team

Meet our dedicated team specializing in chronic and degenerative illnesses, functional restorative medicine, and longevity therapy!

Dr. Dan Kellams, DACM, FMP, L.Ac

A photo of Dr. Dan Kellams
Clinic Director

Dan Kellams grew up in southern Indiana, where he attended Indiana University and then University of Louisville in Louisville Kentucky for sports sciences.

Dan went on to attend the acclaimed American College of Acupuncture and Oriental Medicine (ACAOM) where he received his training and studies in acupuncture, herbology, Tai Chi, Tui-Na (oriental massage) and Qi-Gong. Dan earned his Master’s Degree in Acupuncture and Oriental Medicine in 2009.  He completed his clinical internship at the prestigious Methodist Hospital in the Houston Medical Center where his passion for advanced integrative therapies grew. Dan earned his DACM specializing in integrative approaches in 2020.

Dan has been heavily involved in integrative, functional and restorative medicine for over a decade. He enjoys both being a clinician, an avid researcher and an educator in integrative therapies as well as proponent of whole body care strategies that focus on the central idea that “the power that made the body has the power to heal the body.” Aside from being the Wellness Coordinator at Peak Vitality in Denver Colorado, Dan also travels the country to consult, educate and coach other clinicians on auto-immunity, chronic illness and difficult health cases.

A photo of Dr. Dan Kellams

Terra Heit, RN, MSN, FNP-C

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Assistant Medical Director
Terra was born and raised in Colorado and attended the University of Colorado where she received a Bachelors in Biology and Integrative Physiology. She then attended Nursing School and has worked as a nurse in different areas of medicine. She has worked in Emergency and Urgent Care as well as Labor and Delivery at Lutheran Medical Center. Since starting her career here at Peak Vitality Terra has gone through advanced training in restorative orthopedics, functional medicine, as well as state-of-the-art training in facial aesthetics which includes restorative facial injections with PRP as well as fillers and Botox. She has also enjoyed learning the functional side of medicine and integrating it with traditional medicine. When not working to help people live their healthiest lives she loves being a mom and spending time with family and friends.
A photo of Terra Heit

Andi Samperi, RN

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Health Coach / Case Manager

Andi received her Bachelor’s degree in Kinesiology from the University of Kentucky. She continued her education by receiving her Bachelor’s of Science in Nursing from the University of Colorado – Anschutz. Throughout her educational experience, she developed a passion to equip individuals with the knowledge they need to thrive in their personal health journey. This led Andi to pursue training in Integrative Nutrition, and she is now a certified Health Coach.

Andi believes that health education is not only a fundamental part of overall well-being, but the building block of empowerment and self-advocacy, leading the way to a long and healthy life!

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Darlene Iriarte, BA, CNTP

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Health Coach / Nutritionist

Darlene brings in the whole body connection as she shows how nutrition and lifestyle adjustments can positively affect health. Darlene focuses on education and coaching patients through personalized, food and lifestyle planning, nutritional deficiencies, as key components in her holistic health coaching and functional nutrition protocols.

Darlene has a BA in International Business and Spanish, and worked with international companies, focusing on process improvement, and relationship building. She changed career paths after trying to improve chronic health ailments, with little help from conventional medical health care practices. She focuses of the powers of nutrition and getting to the underlying cause of illness. This, plus raising two children on holistic wellness principles, was the motivation for becoming a Certified Nutritional Therapist Practitioner.

She is a member of Functional Nutrition and Micro-biome forums, has volunteered in community-based organizations, advocacy for neglected and abused children, tutored Spanish to students with developmental disabilities, and wellness education for underprivileged families in Hispanic communities.

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Bruce Ayers, L.Ac

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TCM Clinician

Bruce spent his early adult years as a building contractor in Washington, Oregon and Idaho. He settled in Jackson Wyoming to become a fishing, hunting and snowmobile guide. All the while, Bruce continued his first aid & back country trauma training. With the support of his wife and three daughters, Bruce completed Respiratory Therapy school and practiced for 21 years in this profession. In 1999 Bruce entered Acupuncture school and was granted a Masters in Oriental Medicine in 2004. Bruce uses his accumulative experiences with nature along with his formal training to help patients, friends and family achieve their health goals.

A photo of Bruce Ayer

Lisa Berthelsen

A photo of Lisa Berthelsen
Virtual Team Manager
A native to Atlanta, GA, Lisa has spent her career in Health and Wellness in a natural healthcare setting. Lisa is passionate about helping patients with natural solutions for their healthcare challenges. With over 30 years experience in the industry, Lisa not only works with patients to make sure they are taken care of, but she also trains and coaches doctors all over the country in natural healthcare protocols. A mom to three young men and two dogs, Lisa is active and values the return of hard work, both physically and mentally.
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Karlee Claudio

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Case Manager
Karlee Claudio received her bachelors degree in family science from Utah valley University in addition to receiving her medical assisting certification. This eduction has helped her develop a passion for natural healthcare and helping each person Individually in any way she can to achieve their goals. While on a service trip to Guatemala she realized that when you take the focus off yourself and put it on others you are able to help and lighten the burdens of those around you. Karlee has a tender heart and passion for helping people on their health journeys. She resides in North Carolina with her husband and is a dog mom to the cutest pup. When she isn’t working she enjoys hiking, spending time at the lake wake surfing, trying new food, and weekend adventures to new places.
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Shelley Leigh

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Executive Assistant

Shelley is a native to Colorado, where she began her career in the healthcare field in 2006. Throughout her many years of experience she has developed skills not only in the reception and front desk roles but also assisting Doctors in patient care and procedures. Along the way she discovered that healthcare was a passion of hers and she loves being a part of a team helping patients to achieve their health goals.

She has been working with Dr. Kellams’ since July 2020 and has recently moved into the position of Executive Assistant for the practice. She facilitates patient flow and ensures a smooth treatment process for both patients and team members alike.

Shelley and her husband live in Northern Colorado with their 3 young children.

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Doug Minton, MD

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Medical Director

Dr. Minton was born in Belle Fourche, SD, and grew up in Utah. He attended the University of Wyoming, and graduated with a B.S. in Zoology. He attended medical school at the University of Colorado’s Health Sciences Center, and began his residency in Obstetrics and Gynecology at St. Joseph Hospital in Denver, which he finished in 1988. He has been a partner at Westside Women’s Care in Wheat Ridge, CO and Arvada, CO since that time. He is a past president of the medical staff at Lutheran Medical Center in Wheat Ridge, CO. Dr. Minton is board certified in Obstetrics and Gynecology, as well as certified in Age Management Medicine through Cenegenics.

Dr. Minton encourages patient and family involvement with healthcare decisions, with a preference in lifestyle changes and natural therapies when at all possible. His personal philosophies towards healing and health align directly with Peak Vitality and the Premier Med Group. He started in private practice in 1988. Doug is married and has three children. He enjoys sailing, scuba diving, theater, reading and hiking with his family.

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Jennifer Gibbons, RN, MSN, FNP-C

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Health Coach

Jennifer is a native Houstonian and attended UTMB for her Bachelors in Nursing, UTHSC Houston for her Masters in Nursing and then became a board certified family nurse practitioner. She has over 25 years experience in nursing and has worked in various areas. Jennifer is a breast cancer survivor who used her diagnosis to redirect her career path into one of health and wellness. Her mission in life is to help people build lifelong habits that will create physically, emotionally, spiritually and strong human beings. Since starting her career at Peak Vitality as a health and wellness coach, Jennifer works with clients under a functional medicine framework, pursuing progress over perfection, so that steps they make to improve their health are sustainable and lifelong. She combines evidence-based practice modalities including functional medicine, supplementation, nutritional and lifestyle recommendations to achieve results. She is passionate about helping others realize their innermost potential and her greatest desire is to see people optimizing their health and reversing disease. When not working to help empower others to create and live their best life, she is living hers by teaching Jazzercise, traveling or spending time with her family and friends.

A photo of Jennifer Gibbons

Your Health Starts Here

Flexible and same-day appointments.

Or call us at 720-504-8007

Your Health Starts Here

Flexible and same-day appointments.

Or call us at 720-504-8007