Jonathan Tyler, PA-C
Physician AssistantLeads Atlas's hormone programs. Patients describe him as knowledgeable, thorough, and someone who "takes the time to go over every number."
About the practice
Western medicine and natural therapies, under one roof
A unique medical practice with a holistic approach to whole-person wellness — helping Las Vegas men and women improve the way they look and feel.
Our approach
Customized care, proven treatments
The team of medical experts — headed up by Mary Thomas, APRN, and Jonathan Tyler, PA-C — provides a blend of Western medicine and natural therapies in the Las Vegas office. Patients looking to improve the way they look and feel find effective solutions like peptide therapy, aesthetics, intravenous (IV) therapy and nutraceuticals.
The team works hand-in-hand for the benefit of every patient, always providing highly customized care — and constantly researches new medical advances to offer the most proven, up-to-date treatments.
Atlas helps men and women with problems like sexual dysfunction, chronic fatigue, menopause, and other issues that often creep up as you age.
Meet the providers
The clinicians behind your care
Mary Thomas, APRN
Advanced Practice Registered NurseHeads up the team of medical experts, blending Western medicine with natural, whole-person therapies.
Ariana Mancilla, APRN
Advanced Practice Registered NursePart of the team delivering hormone replacement therapy and Medical Weight Loss & Metabolic Optimization.
Provider roles as published on atlashealthinstitute.com.
What patients emphasize
Themes from 95 published reviews
Across reviews from 2022 to 2025, the same phrases return: listened to me, explained everything, never rushed, no upselling.
"He actually listens"
Patients repeatedly credit the team with hearing them out — on hormones, energy, weight and women's health.
"Every number explained"
Review after review mentions sitting down with lab results and understanding them for the first time.
"No cookie-cutter"
Options, not templates — patients describe choosing between treatment paths with their provider.
Free confidential consultation
Come talk to a team that listens
Book a free, confidential consultation — or call and ask us anything first.