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Our Story

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What does it mean to live well?

Lifespan has nearly doubled since 1900. But adding years to life hasn’t led to a higher quality of it.

We believe that medical science breakthroughs–including hormone, peptide and regenerative cell therapy – can help millions explore their body’s potential and unlock a path to living vibrantly for decades.

With a focus on knowledge, medicine, and navigation, we exist to create lifetimes with more joy and less disease.

Let's see where we can go together.

The Humanaut Way


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Admire Kindness
Integrity matters.
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Be Open To Change
Life is motion.
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Do The Work
Better tomorrows start today.
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Chase Excellence
People count on you.
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Enjoy The Journey
This is a memory in progress.

Our Team

Humanaut Health is led by seasoned entrepreneurs, physicians, and health and wellness leaders who share a passion for health optimization and longevity science.

We embrace exceptional human beings with the proven ability to translate vision to growth.

Meet our executive team.

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Chief Executive Officer

Jim Donnelly

Seasoned experiential retail entrepreneur, co-founder/former CEO of Restore Hyper Wellness, and co-founder of IgoUgo, acquired by Sabre Holdings

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Executive Chairman

Paul A. Pagnato

Experienced entrepreneur, Stanford Center on Longevity board advisor, Co-Chairman Cresset, and CEO founder of PagnatoKarp

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Chief Medical Officer

Amy Killen, MD

Longevity physician, expert in hormones and sexual health, board-certified emergency physician, international speaker, and entrepreneur

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Chief of Regenerative Medicine

Harry Adelson, ND

Naturopathic physician and founder of Docere Clinics, a global leader in regenerative medicine for musculoskeletal pain

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Chief Technology Officer

Tony Cheng

Co-founder of IgoUgo and Archway Health, a value-based care analytics & risk management company acquired by Coverys in 2022

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Chief Product Officer

Elliot Karathanasis

Former Pfizer division General Counsel and seasoned founder CEO across hospitality, consumer wellness, and investment management ventures

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Chief Relationship Officer

Trey Owen

Founder, former CEO, and current board member of United Fitness Partners, the largest US fitness franchisee with 190+ Planet Fitness locations

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Group Medical Director

P. Jeffrey Smith, DO

Osteopathic physician with board certification in physical medicine/rehabilitation and founder/operator of a leading regional pain management practice

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DIRECTOR OF FUNCTIONAL MEDICINE

Ernie Navarro, MD, ABAARM

Longevity physician, board-certified emergency physician, and leading US concierge medicine provider with a focus on precision medicine

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VP Operations

Nikki Case

Seasoned healthcare operations executive for new and growth venture initiatives, including Thrive Vet Care and Kins Physical Therapy

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VP Marketing

Kerri Williams

Multi-disciplinary growth executive across venture stages, including Talkspace Therapy, Virta Health, and L'Oreal USA

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General Counsel

Tabor Pittman

Legal executive with finance, accounting, and retail wellness expertise, including Goldman Sachs and Restore Hyper Wellness

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With the right talent, anything is possible