We use a root cause approach to understanding the why of your health problem and co-create a program to fix.

Wellgevity Principles

 

We ..

  • see the whole human

  • are objective & data driven

  • measure change

  • are effective and work alongside you to reach your goals

  • are driven by safe science and explain our reasoning

  • support you to change unhelpful habits which incrementally damage your health

We won’t ..

  • compromise long term health for short term gain

  • prefer “bio-hacking” instead we promote bio-harmony

  • prescribe fad diets

  • make promises we cannot keep


 

Founder and Medical Director

Dr Tamsin Lewis, affectionately known as Dr Tam, founded Wellgevity to blend the science and art of longevity into practical healthcare. 
She graduated with honours from King’s College London and Guys and St Thomas’ Hospitals in 2004, earning a BSc in Neuroscience and the Biology of Ageing. Dr Tam has specialist training in psychiatry and sports medicine, complemented by further studies in nutritional and functional medicine.
As a member of The Royal College of Psychiatrists (MRCPsych) and a founding trustee of the British Society for Lifestyle Medicine, Dr Tam is committed to integrating lifestyle approaches into her medical practice. She also serves on the advisory board of Humanity.Health, a health-tech company dedicated to making proactive healthcare accessible to a wider audience. Previously, Dr Tam was part of the founding team and served as Medical Director at RoseBar Longevity with Six Senses.
Before her medical career, Dr Tam was a GB elite triathlete preparing for the 2012 Olympics and won the Pro Ironman Triathlon Championship in 2014. Her experience in elite sports has instilled a performance-oriented mindset, which she now applies to helping clients achieve their health and longevity goals. Since 2009, her involvement in sports and coaching has deepened her understanding of holistic health, focusing on both present well-being and future healthspan.
Dr Tam’s expertise spans psychiatry, gut health, epigenetics, and general medical diagnostics, enabling her to take a comprehensive approach to health management. She is particularly passionate about emotional health in longevity, resilience strategies, hormonal therapies, peptides, strategic exercise, and evidence-based supplements that enhance Health-Span.
With a strong background in digital health and wearable technology, Dr Tam utilises these tools to promote connected health and empower individuals in their wellness journeys. Recently, she has been exploring the neuroscience research and therapeutic use of psychedelic compounds, learning from experts like Dr Robin Carhart-Harris at Imperial College, to further enrich her holistic approach to mental and emotional well-being. Joy-Span. 
At Wellgevity, Dr Tam combines her medical knowledge, athletic experience, and dedication to longevity to provide personalised, high-quality care. Her approach emphasises behaviour change and a humanistic perspective, ensuring that each client receives tailored strategies to optimise their health and achieve their full potential.
Specific interests are Emotional Health in Longevity - longevity practices - hormonal therapies, bio-modulators/peptides and strategic exercise, techniques and supplements which research shows us improves health-span. 
A lifelong learner, Dr Tam is driven by curiosity and a relentless pursuit of knowledge. She is committed to creating a strong network of practitioners and fostering a community where knowledge and experiences are shared collaboratively. This dedication to co-creation ensures that Wellgevity remains at the forefront of longevity science, offering clients innovative and effective health solutions.
She has a deep knowledge of digital health and use of wearable tech driving connected health and personal empowerment. More recently, learning from Dr Robin Carhart-Harris at Imperial College, (and related experts) , Dr Tam has become interested in the neuroscience research and practical therapeutic use of psychedelic compounds in expert led legal and research setting. 
At Wellgevity, Dr Tam combines her medical expertise, athletic experience, and dedication to longevity to provide personalised, high-quality care. Her approach emphasises behaviour change and a humanistic perspective, ensuring that each client receives tailored strategies to optimise their health and enjoy life.
Dr Tamsin Lewis

Dr Tamsin Lewis

Nutritional Therapist & Health Coach

Trained in Naturopathic Nutrition CNM and Certified as a Health Coach, Charlotte is passionate about nutritional, hormonal and lifestyle medicine principles which underpin our wellbeing and enhance longevity. 
Charlotte has closely worked with Dr Tam since 2015 and has  broad practical clinical experience and strong core values for client-care and results. 
Charlotte personalises protocols with targeted personalised nutrition whilst supporting  sustainable behaviour change. She utilises systemic coaching  to support in the domains of fuelling, meal timing, sleep, movement, stress resilience, gut health and hormone balancing . Thus cohesively building your resilience and longevity. 
Qualifications : PGDIP BSC Hons.

Charlotte May

Longevity Doctor

Meet Dr. Charlie – A Trailblazer in Longevity Medicine at Wellgevity. He is renowned for his innovative approach and profound dedication to the science of longevity medicine. As an intensive care doctor, he has witnessed firsthand the challenges faced when people become critically ill and become driven to lead in preventative healthcare as well. His focus is on reversing the ageing process, enhancing disease resistance, and boosting overall resilience.

At the heart of Dr. Charlie’s practice is a data and physiology driven personalised approach. He excels in demystifying the complexities of longevity science, employing precise care models, advanced lifestyle interventions, and biomarker-driven supplementation, all targeted at the fundamental aspects of ageing. His commitment to continuous learning and staying at the forefront of research ensures that his methods are based on the latest scientific insights.

Beyond his professional achievements, Dr. Charlie is passionate about mountain medicine and endurance activities, holding a diploma in the former. His adventurous spirit has led him to significant challenges, such as summiting Mount Elbrus and running the Marathon des Sables - reflecting his personal commitment to pushing boundaries.

Dr. Charlie’s blend of rigorous training and personal experiences makes him a distinctive voice in longevity medicine. His work is marked by an unwavering commitment to his patients, ensuring that Wellgevity remains at the cutting edge of healthcare and that thriving becomes the standard for our patients.

Dr Charlie Cox

Medical Doctor/GP

Dr Chatterjee has extensive experience in clinical medicine as an expert generalist with a special interest in metabolic health. She qualified in 2000 from the University of Wales College of Medicine.

She focuses on solving problems with a systems, root cause approach, and tackles issues with the foundations of health and longevity in mind - nutrition, movement, connection, sleep and mindset.  She  is an avid proponent of de-prescribing whenever possible, using medication's judiciously.

Rini also has movement qualifications as a CrossFit(MD) Level 1 coach.

Dr Rini Chatterjee

Dr Leah Austin

Medical Doctor GP

Naturopathic Medicine

Dr Leah Austin graduated from Newcastle University upon Tyne in 2007 and completed her GP training in 2014. Since working as a General Practitioner she has gained experience working in the North East, Yorkshire, London, UK and Beijing, China.

Working as General Practitioner within the NHS, she became frustrated with time constraints of 10 minute consultations; the ability to manage patients with longstanding (chronic) health problems and really being able to give patients the individualised assessment and care they deserved. Being of mixed ethnic background with Chinese and English, she became fascinated with eastern medicine and the true impact of nutrition, genetics, herbs, environment and lifestyle. With this and her own health/family concerns, led her to study nutrition and qualify as a Naturopathic Nutritional Therapist in September 2017 at the College of Naturopathic Medicine.

Dr Leah is very experienced in a range of complex conditions and keeps up to date on preventive health research.
She specialises in longevity, preventative medicine, chronic health problems, digestive health, women's health & hormones, weight problems and genomics/genetics. Using a systems-oriented, 360 degree approach (lifestyle, nutrition, medical, genetic, environmental) to address her clients/patients health concerns to ultimately produce the best plan/programme and protocols.

Medical Doctor/Longevity Specialist

Dr. Ankit Chawla is a firm believer in the power of taking charge of one's own health, and he brings this passion to his craft by empowering patients to not just live, but thrive. He utilises the fundamental pillars of longevity, combined with principles of functional medicine and precision medicine, to formulate a personalised, holistic longevity strategy. His ultimate goal is to help people maximise their health span and reach their full potential.

Dr. Ankit graduated from the world-renowned Imperial College London and completed his GP training at Guy’s and St Thomas’ Hospitals in London. With over 11 years of broad generalist experience across almost every facet of physical and mental health, he has gained a unique vantage point from which to assess and manage health and chronic disease. He has undertaken further training with the Institute for Functional Medicine, allowing him to combine his personal passion for health with his profession, providing truly proactive (or "primordial," as he likes to call it) prevention of chronic disease.

His passion lies in optimising health through a muscle-centric approach to health and nutrition. By harnessing the power of these two pillars of health, along with sleep and emotional well-being, he applies a nuanced approach to cardiometabolic health, gut health, mitochondrial health, and hormonal balance. All of this culminates in a tailor-made strategy to create optimal health for his clients.

Outside of his clinical work, he is a lifelong fitness enthusiast, adrenaline junkie, and has an immense love of learning new things. He also holds a Master’s degree in Bioengineering, reflecting his interest in medical technological innovations and a diverse skill set and analytical mind, both of which he applies to human health.

Dr. Ankit is passionate about simplifying the art and science of longevity and health to make it accessible for everyone – knowledge is power, and he takes great pride in empowering all those he works with.

Dr Ankit Chawla

Dr Ankit Chawla

Meet the Wellgevity Team

Nurse Practitioner

Nurse Nena has been dedicated in providing care and integrative wellness since graduating as a nurse. Nena is a friendly face that often visits Wellgevity patients for phlebotomy services and to administer IV’s in the comfort of their own home.

Detail-oriented with over ten years of experience in drawing blood and assisting in administering life medicine treatments. Nena is committed in delivering personalised care at the highest standard to help clients achieve optimal vitality and longevity.

Her passion in leading and promoting a healthy and balanced lifestyle complements her professional skill set and profile for our team.

Qualifications: Nursing Diploma, Cannulation, Phlebotomy.

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Nena Klimenta

Elle provides the fabric which weaves Wellgevity together. Passionate about effective client care.

Prior to joining Wellgevity in 2016, Elle spent her years working at client service relation company with managing and administrative roles. And later moved to Germania Technik working with executives that provides support to all business units including administrative, financial and human resource departments. Her background as BSN.Registered nurse enabled her competence within Wellgevity medical organisation.

Elle Baessler

Operations

With a first class degree in economics, Vanessa joined the Wellgevity team in 2019, following a career in the investment banking industry where she worked in a number of trading, sales and relationship management roles at both JPMorgan and Bank of New York Mellon.

Being a keen netball player, coach and club manager as well as sports enthusiast, she is motivated to integrate her health and fitness lifestyle objectives with her finance and business management capabilities at Wellgevity to help others achieve optimal health.

Vanessa Westlake

Finance and Operations

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I’ve been seeing Dr Tam for five years now. Her depth of knowledge of cutting edge treatments, boundless compassion and her individualised approach - particularly around women’s health - is second to none. She really listens, really cares, and has been relentless in getting to the root of my complete adrenal burnout and complex hormonal issues.
I feel incredibly fortunate to have found her.
— AG

Our Science Advisory Board 

Advisory & collaboration team

Dr Tamsin works with an exceptional global network of some of the most progressive, scientific and intellectual clinicians and researchers. 

A True Multi-Disciplinary Team where you are front and centre. Client centred care utilising a deep skill and experience base.