Dr Yen Chen - Principal GP


yen chen final

I was born in Taipei, grew up in Christchurch and went through Otago medical school. After graduation I was lucky to have worked in Nelson hospital for a couple of years as a house surgeon and married my wife Sarah. We have spent the past few years doing GP training in Tauranga and are grateful for the opportunity to come back to Nelson with our children to be closer to family.

The most enjoyable aspect about primary care is being part of the community and journeying with the patients. I enjoy all aspects of general practice and further to general GP training I have further studies in skin cancer dermoscopy and sport/exercise medicine. I look forward to meeting you in the future.

Dr Sarah Wong - Associate GP

MBChB, FRNZCGP, Dip Child Health


I was born in Christchurch, with a Malaysian ethnic background, and spent most of my childhood growing up in Nelson. After attending Otago Medical School and clinical years training in Christchurch, I returned to work in Nelson Hospital as a House Surgeon. For several years I had worked as a GP in a high needs practice in Tauranga before moving home to Nelson.  

I have a strong interest in child health and have spent 18 months working as a registrar in Nelson and Christchurch Hospitals in paediatric medicine. I also enjoy women's health and family medicine. I love the diversity of general practice and the privilege of working alongside and getting to build relationships with patients and their families.  

My husband and I have 3 young children and I thoroughly enjoy spending time at the beach, walks, swimming and other adventures in this gorgeous city.

Dr Graham Loveridge - Associate GP

MB.ChB, B.Sc, Dip.Obs, FRNZCGP

Graham Loveridge 26.3.19

I was born in Golden Bay and spent most of my school years in Nelson, so it was great to return here as a House Surgeon after graduating from Otago Medical School. I did the usual working overseas (Bermuda and Britain) before coming back to Nelson to take up General Practice.

General Practice is a natural choice for me in medicine, as I enjoy the variety, the long term contact with patients and the relationships that come from that. While I enjoy all aspects of General Practice, I have special interest in minor surgery including skin cancer surgery and vasectomies.

My wife Ruth and I have two sons who are both Doctors.

Outside of medicine I enjoy getting back to Golden Bay, gardening and getting some exercise. The mountain bike keeps me fit and I train at Seido Karate and get out for a surf at Snappers whenever I can.

Dr Chris Dittmer - Associate GP

B.Sc, MB.ChB

Dr Chris Dittmer

Born and bred in Auckland, I have spent the past 10 years in the South Island, migrating north from Dunedin to Christchurch and finally settling in Nelson.

After 4 years in a variety of House Surgeon / Registrar roles at Nelson Hospital, General Practice is providing a change of pace and a fresh look at medicine from a grassroots perspective.  I thoroughly enjoy seeing the transformation that can come from effective medical care working alongside patients to achieve the best possible outcome. It is a rewarding field of medicine to be a part of.

A keen cricketer and outdoors enthusiast, the best weekends are certainly spent out on the water soaking in the salt air and hauling in my quota of whatever the catch is permitting.

Dr Maria Giouzeli - Associate GP

Dr Maria Giouzeli


I was born and grew up in Greece. After high school I moved to London to do a degree in Biology at Greenwich University. My passion had always been psychiatry, which led me to do a PhD in Genetics of Schizophrenia at Oxford University. I moved to Newcastle to study Medicine. I worked in various house officer jobs there before I decided that GP is the right choice for me as it offers a more holistic care.

After working as a GP in various places in cold and grey Newcastle my husband and I decided to move to beautiful New Zealand, known for its great outdoors work-life balance. We brought with us our beloved three dogs. We have since adopted a rescue cat. The dream is to have land with a goat and a donkey to add to our family.

I was fortunate to join the team at Harley Street Medical which epitomises my love for GP: continuity of care for patients as a biopsychosocial entity, in a relaxed, friendly, and approachable environment. As for Nelson, what is there not to like!



cornerstone logo large