One team. One mission. More life, lived better.
Argentis brings together physicians, longevity specialists, performance experts and health strategists around one goal: helping you get more from the years ahead.
Meet Your Health Team
As the CEO of your health, you deserve more than a single physician. You deserve a coordinated team working together on your behalf.
Your Argentis membership includes access to experienced professionals across family medicine, longevity, functional medicine, women’s health, lifestyle medicine, nutrition, and performance coaching. Together, they help you solve today’s health challenges, prevent tomorrow’s, and perform at your best.
We believe the best outcomes come from combining the strengths of both conventional medicine and root-cause, lifestyle-based approaches. When a prescription, procedure, or specialist is the right answer, we’ll help you access it. When deeper investigation into nutrition, sleep, stress, hormones, metabolism, inflammation, or environmental factors is needed, our team looks beyond symptoms to understand why the problem developed in the first place.
And when additional expertise is required, we coordinate referrals to our trusted network of leading specialists and partner providers—locally, nationally, and internationally. Rather than navigating a fragmented healthcare system on your own, you have one team coordinating every step of your health journey.
CORE TEAM
Dr. Tim Duerler, MD
Family Medicine & Primary Care
Dr. Tim Dueler is a Park City physician specializing in family medicine, preventive care, and precision health. He helps clients navigate both everyday medical needs and long-term health planning, combining evidence-based medicine with a proactive approach to prevention, performance, and healthy aging.
Dr. Nicholas Kanaan, MD
Acute Medicine
Dr. Kanaan is a Stanford-trained Emergency Medicine physician and Diplomate of the American Board of Emergency Medicine. He is passionate about longevity medicine and aims to empower individuals to take control of their health using evidence-based practices, integrating preventative medicine, functional medicine, personalized care, and regenerative medicine strategies.
Dr. Christos Stavropoulos, MD, FACS
Complex Surgery & Oncology
Dr. Christos Stavropoulos is a board-certified thoracic surgeon and Chief of Thoracic Surgery and Director of Thoracic Oncology. As part of the broader Argentis specialist network, Dr. Stavropoulos brings deep clinical expertise to the early identification and management of serious disease — helping ensure that when advanced evaluation or specialist care is needed, clients have access to experienced medical leadership.
Dr. Richard Handley, MA
Longevity & Precision Health Specialist
Dr. Richard Handley is a longevity specialist with advanced training in precision medicine, metabolic health, and performance optimization. He works with clients to identify early health risks, improve resilience, and develop personalized strategies that support long-term vitality and healthy aging.
Amy Duerler, FNP
Women’s Health & Preventative Care
Amy Dueler is a Nurse Practitioner focused on women’s health, hormone health, and personalized preventive care. She helps women understand how hormonal changes can influence energy, sleep, body composition, mood, performance, and overall well-being. Her proactive, whole-person approach helps clients navigate testing and treatment options and turn health insights into practical strategies for feeling and performing their best over the long term.
Maraya Brown, CNM
Women’s Health & Coach
Maraya Brown is a Yale-trained Certified Nurse-Midwife and women’s health clinician with more than two decades of experience. She is passionate about helping women improve their energy, hormonal health, and overall wellbeing through personalized care that combines her clinical experience with functional medicine training.
Dr. Dan Roney, ND
Functional & Integrative Medicine
With more than 25 years of clinical experience, Dr. Dan Roney specializes in uncovering and treating the root causes of chronic health conditions. His expertise spans functional medicine, gut health, hormones, environmental toxins, and personalized therapies designed to restore energy and optimize whole-body health.
Pat Moran
Wellness & Performance Coach
Patrick Moran is a sports, endurance and wellness coach whose career bridges elite athletic performance, community building and technology. Based between Boston and Park City, Pat has coached runners and downhill skiers at recreational, elite and Olympic levels, helping athletes prepare with structure, resilience and purpose.
Argie
Performance, Recovery & Nutrition
Argie is your real-time Performance & Nutrition Coach helping clients translate health insights into everyday action. Through personalized training, nutrition guidance, recovery strategies, and accountability, they help build the habits that improve energy, strength, resilience, and long-term performance.
Ashley John Heather
Founder & Lifestyle Coach
Ashley John Heather is the founder of Argentis Health and a Harvard Medical School–trained Lifestyle Medicine and Health Coach. He works alongside the clinical team to help clients build sustainable habits, simplify complex health decisions, and create a personalized roadmap for living longer, stronger, and with more energy.
ARGENTIS CARE NETWORK
When your health requires more, your team expands with you.
No single physician — or clinic — can provide every answer.
The Argentis Care Network extends our core medical team with a carefully selected group of specialist physicians, clinics and health experts we can call upon when a client’s needs go beyond our internal expertise.
From complex brain health and functional medicine to regenerative therapies, advanced procedures and the navigation of serious illness, these relationships give our clients access to a broader spectrum of expertise and therapeutic options.
Our role is not simply to make a referral. We help identify the right resource, coordinate the relationship, share the relevant health context and integrate what we learn back into your overall Argentis health strategy.
One health team. An extended network of expertise. No matter where your health takes you.
bVital
Brain Health & Regenerative Medicine | Park City, Utah
bVital provides specialized programs focused on neurological health and regenerative medicine. Its work includes functional and regenerative approaches for complex neurological conditions, with particular expertise in Parkinson’s disease and programs designed around brain health, function and quality of life.
For Argentis clients facing complex neurological concerns, bVital provides access to a deeper level of focused evaluation and specialized care close to home.
Lumati
Whole-Person & Functional Wellness | San Diego, California
Lumati takes an integrated, whole-person approach to longevity and wellness, combining personalized assessment with nutrition, lifestyle, recovery and a range of complementary wellness modalities.
Its multidisciplinary team includes medical, naturopathic and holistic practitioners, allowing Argentis clients to explore additional approaches to areas including chronic wellness concerns, gut health, brain health, recovery and healthy aging.
Longevity Medical Institute
Advanced Regenerative Medicine & Procedures | San José del Cabo, Mexico
Longevity Medical Institute is a 15,000-square-foot medical center in San José del Cabo bringing advanced imaging, an on-site clinical laboratory, regenerative medicine and procedural capabilities together within a single destination.
Its capabilities include MRI imaging, physician-led regenerative therapies, stem cell and exosome programs, recovery therapies and surgical facilities — delivered within a highly personalized, hospitality-led environment.
For appropriate Argentis clients, LMI provides access to advanced diagnostic, regenerative and procedural options that may complement conventional medical or surgical approaches.
Aperture Health — Darrell Edwards
Irvine, California
Complex Care & Medical Navigation
When health becomes seriously complicated, knowing what to do next can be as important as knowing the diagnosis.
For more than two decades, Darrell Edwards has helped individuals and families navigate complex medical situations, coordinating specialists, hospitals, second opinions, procedures, records and critical healthcare decisions.
Through Aperture Health, Argentis clients and their families can access an additional level of private medical navigation when facing advanced disease, major interventions or other complex situations where experienced guidance and coordination become especially important.
Care Without Silos
The Argentis Care Network reflects a fundamental belief behind our approach to health:
The best solution should win.
Sometimes that means conventional medicine. Sometimes it means surgery. Sometimes it means bringing in a highly specialized physician, exploring an emerging regenerative approach, addressing underlying lifestyle and functional factors, or seeking another expert opinion.
Our job is to help you navigate those choices intelligently — bringing the right people into the conversation while keeping your care connected to the bigger picture of your health.