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Translating evidence-based longevity science today 

for a healthier more fulfilled tomorrow.

Meet Dr. Dixon


Barzilai Consulting is your indispensable scientific partner for premium evidence-based healthy aging practices. 

Already have a longevity provider? We offer essential, objective scientific support to elevate your health practices.

We provide highly tailored, personalized health services, designed to seamlessly complement your existing longevity team.



David Barzilai, MD PhD is a longevity specialist, health coach, speaker, thought leader, and pioneer at the forefront of optimizing personal healthy lifespan, bringing expertise on the most impactful advances in research to his clients. Through Barzilai Consulting (Healthspan Coaching LLC), David incorporates the latest data, scientific and technology breakthroughs, providing state-of-the-art longevity and healthy lifestyle coaching and consultations one-on-one with his clients. Quality of life, physical and mental vigor, and  healthier lifespan (both "youthspan" and "healthspan"), are at the center of Barzilai Consulting's mission.


A Healthspan Coaching Blueprint for Healthy Longevity 


Who we serve:

  • Entrepreneurs, CEOs and executives

  • Clinicians and longevity specialists

  • Evidence-based biohackers

  • High performance individuals and longevity enthusiasts

  • Individuals interested in risk mitigation of chronic disease, and optimizing healthy lifespan.

As the CEO of your well-being, you take radical responsibility for your decisions and outcomes, so you seek all available research, knowledge, and expert insight to help you minimize risk and maximize not just the duration of life, but also the quality of your years.

Discover a longer, healthier, and more youthful life with personalized support from a knowledgeable, compassionate, highly trained health and longevity specialist.

Break free from traditional clinical constraints, leveraging cutting-edge science and therapeutics, and engage in deep, empowering discussions about your personal health goals.

You’ve got a team of medical providers - perhaps even working with a longevity center - to handle your diagnostics, treatments and prescriptions but you’re interested in the latest research, emerging ideas, alternative perspectives and unique approaches that are decades ahead of standard care.

We work together, complementing your current health team, to proactively design and navigate your health journey.


Common client objectives include:

  • ·Lifestyle: diet (weight maintenance), healthy eating (nutrition), physical activity (exercise), sleep, stress.

  • ·Optimizing physical and mental performance, regimens and protocols (both natural and exogenous), including evidence-based biohacking.

  • ·Expertise around health areas of controversy.

  • ·Discussion of apparently conflicting data.

  • · Longevity and evidence-based regimen expertise

  • · Life coaching including for relationships, business, and what matters most to you at work or home.

  • Prevention and risk mitigation approaches for heart disease, cancer, and brain health including alzheimer's disease,  other dementias, and optimal health.

All coaching and consultation is performed personally by David. Sessions are client-driven, and can be either stand alone, or part of a long-term partnership. 


For your ease, personalized Zoom/phone sessions can be booked through the online calendar. This website will guide you step-by-step.

David Barzilai MD PhD Agingdoc Longevity Coach

David Barzilai MD PhD

"My first priority is understanding my client and their needs. Ultimately our goal is supporting your healthy lifespan, and navigating together your optimal personal health plan.

Many are under the management of a concierge medical practice and seek me out for my longevity expertise and input. For these clients I serve as an instrumental part of their health team by providing complementary consultation, coaching and support. This may, for example, include incorporating the latest cutting edge research and optimal health guidelines and protocols.

My clients are invested in incorporating the latest preventative medicine guidelines to their health.


I help them navigate obstacles and areas of controversy such as rapamycin. I do not prescribe medications as a consultant, but do provide in-depth scientific expertise. I also work with clinician-clients who themselves prescribe medications such as rapamycin, and are interested in taking a "deep dive" into the medical literature including their strengths, limitations and implications.


My goal is to support your health and wellbeing, towards a fulfilling, productive and optimally balanced life."

·David has in-depth knowledge but as a healthy longevity coach, he does not diagnose or treat. While no physician-patient relationship is formed, as a coach and consultant, David leverages evidence-based best practices, practical tools and personal experience towards helping clients overcome obstacles and achieve their goals.




Mountain Landscape

"It’s virtually impossible to find a medical doctor well versed in all things health and life extension related... I found David to be refreshingly humble, engaging, and incredibly informed."


Maryland, USA

"I had the pleasure and good fortune to have a private phone consultation with the famous and extremely well informed Agingdoc- real name David Barzilai MD, PHD. It’s virtually impossible to find a medical doctor well versed in all things health and life extension related, and certainly you won’t find one as informed as David.

He has vast knowledge of the medical literature, second to none, and this is clear if you’ve ever visited his Twitter site, agingdoc1, where, on a daily basis, he posts numerous up to date studies in the longevity field.

I found David to be refreshingly humble, engaging, and incredibly informed."
Pricing for Healthspan Coaching


Our premier longevity service offers exclusive direct and longitudinal engagement with Healthspan Longevity CEO David Barzilai. For an annual membership fee of $50,000, you will receive a program custom tailored to your unique needs. Join us to embark on a personalized journey to enhanced health and longevity.

Initial Free Discovery Call for Longevity Consultations and Health Coaching

Intial Free 10 Minute Discovery Call

The discovery session helps answer questions about the service, so that we can determine together whether there is a good fit for a first Healthspan Coaching session. 


Although these sessions do not provide counseling or consulting it does provides an opportunity for me to learn more about you and your goals.


Join the healthspan community! Rare updates, only from me. I will never share your information, unsubscribe any time. Come check out what's happening.

Agingdoc logo (otherwise known as Aging Doc ) was created by longevity personal health coach and consultant, David Barzilai MD PhD. David provides health education and information to clients by online booking at
  • David Barzilai MD PhD Linkedin Profile
  • Agingdoc Podcast on Youtube
  • Twitter

Agingdoc (@agingdoc1 on X ) aids scientists and science communicators in identifying both high-quality and flawed research currently in circulation, enabling them to effectively interpret and critique the information for their audiences and the general public.

Read more about "Agingdoc"


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