Our doctors


Occupational Physician - Waikato

Dr Michael Kahan

Dr Michael Kahan is an Occupational Physician who works with Waikato Occupational Services Ltd.

Michael is also the Medical Advisor for Laura Ferguson Trust, specialising in Head injury and Stroke rehabilitation. His clinical, research and teaching interests include medical training, neurology and musculoskeletal injury. Michael has recently stepped down as TPD. One of Michael’s research studies is the Bionic Study (Brain Injury Outcomes New Zealand in the Community) and he is currently researching the effect of head injury on return to work outcomes. He is a faculty research associate with National Institute of Stroke and Applied Neuroscience at AUT.

He works with a number of industries including Fonterra, New Zealand Rugby Union, Waikato University and Department of Conservation.

In his spare time Michael is a keen apiarist and ornithologist. He loves the outdoors and instructs youth on bush craft skills as part of the Duke of Edinburg scheme.

Occupational Physician - Northland

Dr Jim McLeod

Experienced practitioner in work related health issues from chemical exposures, drug and alcohol issues, injury management and fitness to work assessments. Northland based. Clear communicator able to make sure health and medical information is put into language you can act on.

Occupational Physician - Auckland

Dr Rod Nicholson

Based in Auckland, Dr rod nicholson is an occupational medicine specialist with 25 years of experience.

He has worked for a wide range of organisations such as military, worksafe, ACC to name but a few. He has a particular interest in musculoskeletal injuries and rehabilitation.

Occupational Medical Practitioner - Northland

Dr Heike Detjen

After completing Medical School in Frankfurt / Germany Heike worked in Germany and the UK before immigrating to New Zealand in 1996.

She has completed a Postgraduate Diploma in Health Science/Occupational Medicine at Auckland University and has worked in multiple industrial settings providing occupational health services for over 15 years.

She also holds fellowship with the Royal New Zealand College of General Practitioners and has completed extensive training in Skin Cancer Medicine and Surgery.

Heike is passionate about occupational health with a strong vision to help create positive healthy workplaces for everyone. She enjoys the diversity of manufacturing processes and the challenges they present to managing individual health requirements.

She is especially interested in a holistic approach integrating a healthy workforce with a healthy lifestyle