Meet the team

We are passionate about health and wellbeing – ‘being at your best’. We aspire to nurture the wellbeing of the  human body and spirit  of our clients, families and their community.

Our vision is to touch every worker on every continent with life changing positive health and well-being interventions – via face-to-face assessment, online via assessment tools, educational portals or expert led community interaction.

We value caring for our clients , making their lives easier (and longer!) – and for ourselves .

We value and demand of ourselves that we are the best at what we do – whether its being a physician, an exercise physiologist or our highly valued  administration staff.

We value trust , respect, and shared decision making.

Dr John Cummins MBBS, MPH (USA), FRACP

Consultant Physician, CEO and Practice Principle at Executive Medicine.

Completing his medical degree in 1984, Dr Cummins was inducted into the prestigious Royal Australian College of Physicians in 1992 and trained for a further 2 years in Minneapolis, USA, completing his Masters in Public Health and a Fellowship in Adolescent Medicine.

Whilst successfully training to be an expert diagnostician, John has always found it tragic that people are diagnosed with a terminal illness that could have been entirely prevented or even cured if diagnosed at an earlier stage. He commenced a search for the perfect wellness and preventative practice, giving his people the optimal chance of thriving and surviving based on the lifestyle practices of the longest living race known to man such as the Okinawans and the Sardinians.

Current appointments:

  • CEO/ Practise Principle – Executive Medicine 2004-present
  • Chief Medical Officer, Scor -Life Reinsurer
  • Chief Medical Officer, Clearview Life Insurance

Past training and appointments:

  • Concord Hospital and Royal North Shore Hospital (RNSH)
  • Staff specialist, Drug and Alcohol, Westmead Hospital 1997
  • General Physician, Mater Hospital , Sydney 2002-2009
  • General Physician University Hospital Minnesota USA 1995-6

Specialty Interests:

  • Stress and health outcomes
  • V-Scan
  • Preventing heart attacks and cancers
  • Professional Memberships:
  • Treasurer – Alca Medical Subcommittee (Life Insurance industry)
  • Lecturer – UNSW Business School 2016


  • Red Cross Life Support 2015

“There is nothing that gives me more pleasure than seeing someone turning their life around, thus saving their own life through lifestyle changes or through our diagnostic abilities, directly saving a life by diagnosing a significant illness at a very early stage- before our valued client even knows they have a potential problem This give me joy.” John Cummins

Dr Philip Mathen MBBS

Executive Health Physician at Executive Medicine, Sydney.

Dr. Mathen has many years of experience with acute and chronic care, and has a special interest in preventive health and wellness, intensive care, and medical laser treatment.

Dr. Mathen obtained his Doctor of Medicine from the University of Sydney before successfully completing the rigorous basic physicians training; the initial examination to become a Specialist Physician. He subsequently transferred to General Practice before returning to the hospital sector. He worked (and continues to work) in intensive care units as a Senior Hospital Doctor in a clinical role, as well as taking leadership roles in the teaching hospital in:

  • setting protocols for emergency in hospital
  • resuscitation and internal drug policy
  • managing and mentoring junior doctors
  • assisting in hospital accreditation

Having worked in intensive care for the past 16 years, one of Phil’s huge motivators to prevent illness and save lives is to avoid the direct experience he has witnessed of men and women having their chests split open to bypass blocked coronary arteries, as well as resuscitating critically unwell people as a result of (often preventable) widespread cancers.

Philip shares his knowledge during intensive care meetings at Macquarie Hospital and has presented at the Hospital Grand Rounds. Dr. Mathen enjoys fine dining, spending time with his family and travelling. He has embraced a Mediterranean diet and practises the lifestyle habits that he preaches.

Education and Training

Current appointments:

  • Senior Medical Officer – Intensive Care Unit, Macquarie Hospital, Sydney
  • Medical Director – Laser Remedy Clinics, Chatswood, Sydney
  • Preventative Health Physician, Executive Medicine Sydney

Past training and appointments:

  • St Vincent’s Hospital
  • Royal Prince Alfred Hospital

Medical Degree:

  • University of Sydney
  • Specialty Interests:
  • Preventive health and wellness
  • Intensive Care medicine
  • Laser medicine
  • Resuscitation
  • Acute care


  • Advanced Life Support provider, Australian Resuscitation Council – ALS2 ALS Provider Certificate No. 13/202/0163: Valid until 28/07/2017

“Having worked at Executive Medicine for the last 7 years, I have had the privilege of guiding a great number of clients along their preventative health journey. In the last 12 months, several seemingly fit and healthy executives have been diagnosed with critical coronary disease. This has certainly galvanized my belief in the power of prevention.

I have worked as a doctor in Cardiac Surgical Intensive Care for almost 20 years, and continue to work in this role at the Macquarie University Hospital. It is this care of patients after coronary artery bypass surgery that kindled my interest in preventative medicine years ago. After staring into the open chest of a patient on life support in the intensive care, there is no doubt in my mind about the power of prevention over cure.” Dr Philip Mathen

Dr Irene Lai MBBS

Health Physician at Executive Medicine, Sydney.

Dr Lai graduated in 1986 and has had advanced training in both Internal Medicine and Dermatology in Australia. In the mid to late 1990s, Dr Lai was a House Doctor in Internal Medicine for the Northwestern University Medical School in Chicago, USA and after this, a Clinical Research Fellow in Dermatology at New York University Medical Centre, Department of Dermatology New York USA.

She has maintained her clinical practice consulting with international travellers, corporate individuals and expatriates including pre-and post deployment medical examinations. She has had extensive medical training, and brings to Executive Medicine significant experience within internal medicine, dermatology and working with the business and corporate community.

Current appointments:

Deputy Medical Director of International SOS, having worked in Southeast Asia and Sydney, providing information and research on infectious diseases, occupational health, vaccinations and delivering her wisdom to numerous Fortune 500 and other corporations
Preventative Medicine Physician Executive Medicine – 2012 to present

Claire Reid

“Having been born in Glasgow, Scotland, Claire emigrated to Sydney 10 years ago with her partner.

Claire has worked extensively in the medical industry, starting work as a care assistant at the age of 16. Through the years, she has gained a wealth of experience working in care homes and hospitals specialising in mental health, aged care and care of adults with disabilities.

After transitioning into the administration sector, Claire found her passion at Executive Medicine where she has now worked for the last six years.

On a personal note, Claire enjoys reading, music and spending time with her husband and her bulldog Charlie.”

Tim Reus

Accredited Exercise Physiologist

Tim graduated  in Exercise Physiology at the University of New South Wales in 2011 and became an Accredited Exercise Physiologist with Exercise and Sports Science Australia (ESSA) in early 2012.

Since then , Tim has worked at EXPHYS with post injury rehabilitation , at Optimum Health Solutions, supervising exercise interventions for those suffering chronic medical conditions including designing rehabilitation for musculoskeletal injuries and chronic pain , instigating programs for weight loss, and functional and performance improvement.

In July 2017, Tim commenced working at Executive Medicine to  craft his skills in preventative medicine.

Tim  is a  passionate  proponent of the overwhelming medical evidence that  strength training  improves functional capacities which ultimately makes one’s so much more enjoyable .

Tim loves cricket and all competitive sports, time with family and friends and developing his EP craft.