AREAS of INTEREST: Pain management; burns patients; anaesthetics; post-op nausea/vomiting; local anaesthetics; muscle relaxants; reversal agents
AREAS of INTEREST: Acute and rehabilitation devices and interventions
AREAS of INTEREST: Chronic lymphocytic leukemia; multiple myeloma; myelodysplastic syndrome; elderly acute myeloid leukemia; JAK2 inhibitors; myeloproliferative disorders; large cell lymphomas; chronic myeloid leukemia T-cell lymphomas; clotting/bleeding agents
Dr. Issa is a Consultant Haematologist and Clinical Head of the Lymphoma Service at Counties Manukau DHB. Dr Issa is an active member of a number of scientific groups; is the founding chair of the Lymphoma Network of New Zealand and the founding Clinical Director of the Middlemore Tissue Bank. She has multiple research publications and is the primary investigator on several local and international lymphoma clinical trials. Dr Issa is the Principal Investigator for a number of lymphoma trials at Counties Manukau DHB.
Dr Sharon Jackson is a Consultant Haematologist at Counties Manukau. Dr Jackson has a led a number of commercial trials in haematological conditions such as myeloma and chronic lymphocytic leukemia, enabling patients to access drugs that are not funded or otherwise unavailable in NZ.
Dr James Liang has been a Clinical & Pathology Haematologist Consultant at Middlemore Hospital since 2017. Continuing his research interests as a Principal Investigator in various clinical trials, Dr Liang’s current interests include adult haematological cancer and management of general haematological conditions.
Dr Gordon Royle is a Consultant Haematologist at Counties Manukau. Dr Royle has made significant contributions to research, particularly in coagulation disorders and his research into dabigatran (an alternative oral anticoagulant to warfarin).
Dr Marshall is Consultant Haematologist at Counties Manukau. Dr Marshall has worked on a variety of haematology clinical trials as Principle and Sub-investigator since 2021.
AREAS of INTEREST: Total knee arthroplasty and post op pain management; spinal surgery and rehabilitation
AREAS of INTEREST: Adult stroke; rehabilitation agents that impact motor recovery
Dr Nicole McGrath is the Clinical lead for Neurology and Endocrinology at Te Whata Ora, Te Tai Tokerau.
Dr Karim Mahawish is a Stroke Specialist at Middlemore Hospital with a focus on the treatment and prevention of stroke. Dr Mahawish has a keen interest in research and led as principal investigator for several grant-funded and industry-sponsored international trials in these fields.
Dr Edmond Ang is a medical oncologist at the Jim Carney Cancer Treatment Centre, Whangārei Hospital, with a special interest in geriatric oncology. Dr Ang's research interest includes early and late phase clinical trials and studies focused on improving patient experience and outcomes.
Dr Usha Shan practises as a general surgeon at Whangārei Hospital with a specialised focus on breast and oncoplastic surgery. Dr Shan founded the breast nurse-led clinic, created the electronic breast triaging system, and formulated guidelines and pathways on Health Point for general practitioners in Northland. Dr Shan served as a board member on the NZ National Training Committee for 8 years and acts as the RACS Training supervisor for surgical trainees in Northland.
Dr Will Anderson practises as a General Surgeon at Whangarei Hospital with a specialised focus on Breast and Melanoma
Dr Newton is a Medical Oncologist with a special interest in gynaecological and genitourinary cancers including renal and prostate cancer and also has experience in treating gastrointestinal and lung cancer. He currently also works as a Medical Oncologist in Whangārei at the Jim Carney Centre. He is actively involved in quality initiatives in cancer services and is dedicated to improving health services for Northland patients.
AREAS of INTEREST: Vaccines; Respiratory Syncytial Virus (RSV); anti-infectives; asthma; bronchiolitis;
Associate Professor Rachel Webb is a Paediatrician at Kidz First (Counties Manukau) and Startship (Auckland City Hospital) and a Senior Lecturer at the University of Auckland. Dr Webb has over 30 publications to date and has special interests include rheumatic fever and rheumatic heart disease, infective endocarditis and the descriptive epidemiology of invasive bacterial infections in New Zealand children.
Dr Adrian Trenholme is a Consultant Paediatrician at Kidz First Childrens Hospital. Dr Trenholme has worked as a Principal Investigator on a range of clinical trials, with special interest in paediatric respiratory illnesses such as RSV, influenza, and LRTI's.
AREAS of INTEREST: Dyslipidaemia & hypercholesterolemia
Dr John Baker led the formation of the Diabetes service at Counties Manukau as Clinical Head from 1998-2003. Dr Baker is an Endocrinologist for Counties Manukau, and has been the Principal Investigator in over 40 clinical trials in diabetes and lipid disorders at Aotearoa Clinical Trials. In 2025, Dr Baker stepped down as the Clinical Director of ACTT and moved into his current role of Clinical Head of the Whitiora Diabetes Service.
AREAS of INTEREST: Topical steroids (for nasal polyps); chronic sinusitis
AREAS of INTEREST: Influenza; sepsis; trauma/injury management; cardiovascular; respiratory; airway; paediatrics
Dr Chris Lash is an Emergency Medicine Specialist at Counties Manukau as well as a Senior Lecturer with the University of Auckland's Faculty of Medicine. Dr Lash is also a member of the NZ Emergency Medicine Network with interests relating to sepsis, especially the early recognition and management of sepsis and paediatric self harm.
Dr Eunicia Tan is an Emergency Physician at Counties Manukau as well as a Senior Lecturer and PhD Candidate with the University of Auckland. Dr Tan is particularly interested in research around emergency medicine, paediatrics and clinical education.
AREAS of INTEREST: Keratoconus, age related macular degeneration
Dr Rasha Altaie is a Consultant Opthalmologist at Counties Manukau as well as a Senior Lecturer with the University of Auckland. Dr Altaie has a strong interest in research, with a number of publications to her name and a particular interest in keratoconus.
Chris serves as a General and Colorectal surgeon in Te Tai Tokerau. He has significant expertise and experience in clinical leadership. He has a broad range of research interests, with a focus on collaborative research in General Surgery.
Dr Usha Shan practises as a general surgeon at Whangārei Hospital with a specialised focus on breast and oncoplastic surgery. Dr Shan founded the breast nurse-led clinic, created the electronic breast triaging system, and formulated guidelines and pathways on Health Point for general practitioners in Northland. Dr Shan served as a board member on the NZ National Training Committee for 8 years and acts as the RACS Training supervisor for surgical trainees in Northland.
Dr Will Anderson practises as a General Surgeon at Whangarei Hospital with a specialised focus on Breast and Melanoma
AREAS of INTEREST: Acute colitis; ulcerative colitis; irritable bowel syndrome; pre and pro-biotic; broad interest involving endoscopies. Hepatitis B (HBV); hepatitis C (HCV); nonalcoholic fatty liver (NASH); auto-immune hepatitis
Dr Tien Huey Lim is the Principal Investigator for the chronic hepatitis B and metabolic dysfunction-associated steatohepatitis (MASH) trials at Counties Manukau. Dr Lim works on a portfolio of commercial and investigator initiated trials, as part of the global effort to find a cure for hepatitis B and MASH.
Dr Sriharan Selvaratnam is a Consultant Gastroenterologist Middlemore Hospital. Dr Selvaratnam’s focus includes include gastroenterology, liver disease and diagnostic/therapeutic endoscopy.
Dr Adele Melton practises as a Consultant Gastroenterologist at Middlemore Hospital. Dr Melton’s special interest cover endoscopy – diagnostic and therapeutic, inflammatory bowel disease, irritable bowel syndrome, gastro-oesophageal reflux, coeliac disease, colorectal cancer and liver disease.
AREAS of INTEREST: Devices (acute coronary); chronic angina; coronary heart disease; risk reduction for coronary artery; congestive heart failure; heart failure paradigm; interventional cardiology procedures specifically related to IVUS and FRR; stents
Dr Mayanna Lund is a Clinical Cardiologist at Counties Manukau. Dr Lund's special interests include heart failure, atrial fibrillation and cardiomyopathies.
Dr Jen-Li Looi is a Clinical Cardiologist at Counties Manukau specialising in non-invasive cardiac imaging with a special interest in Takotsubo syndrome and three-dimensional echocardiography.
Dr Douglas Scott has worked at the Counties Manukau Cardiology department since 1997 and has been instrumental in setting up the cardiac catheterisation laboratory and interventional services. Dr Scott’s current areas of interests include interventional cardiology, permanent pacemaker implantation and atrial fibrillation.
Dr Timothy Sutton has been a Consultant Cardiologist at Counties Manukau since 2001 and has special interests in ischaemic- and valvular-heart disease and heart failure. Dr Sutton also has an interest for transthyretin (TTR) amyloidosis, a rare and progressive disorder.
Dr Daniel Chan is a General and Interventional Cardiologist at Whangārei Hospital. He is the Clinical Lead of the Cardiac Cath Lab and is the Elected Board Member of Cardiac Society of Australia and New Zealand. He has special interests in heart failure and ischaemic heart disease.
Dr Marcus Lee is a Interventional & General Cardiologist at Whangārei Hospital with a focus on equitable access to specialist cardiology for regional patients. Dr Lee has an interest in acute coronary syndromes and cardiomyopathies.
Dr Andrew Borrie practises as a Interventional Cardiologist at Middlemore Hospital. Dr Borrie has a special interest in acute coronary syndromes and using intravascular imaging to guide coronary intervention.
AREAS of INTEREST: Adult Type I and II diabetes
Dr John Baker led the formation of the Diabetes service at Counties Manukau as Clinical Head from 1998-2003. Dr Baker is an Endocrinologist for Counties Manukau, and has been the Principal Investigator in over 40 clinical trials in diabetes and lipid disorders at Aotearoa Clinical Trials. In 2025, Dr Baker stepped down as the Clinical Director of ACTT and moved into his current role of Clinical Head of the Whitiora Diabetes Service.
Dr Nicole McGrath is the Clinical lead for Neurology and Endocrinology at Te Whata Ora, Te Tai Tokerau.
AREAS of INTEREST: Vaccines (e.g. influenza); anti-microbial; bone infections
Dr Morpeth leds the New Zealand arm of the ASCOT study is funded by the Health Research Council. The AustralaSian COVID-19 Trial, is a multi-centre randomised adaptive platform clinical trial to assess clinical, virological, and immunological outcomes in patients with SARS-CoV-2 infection (COVID-19).
AREAS of INTEREST: Influenza; Sepsis; pneumonia
Dr Tony Williams is the Head of Research at the Critical Care Complex at Counties Manukau. Dr Williams is a member of the New Zealand Perioperative Mortality Committee, while also involved in many ANZICS CTG trials.
AREAS of INTEREST: Osteoarthritis; rheumatoid arthritis; systemic lupus erythematosus; psoriatic arthritis; gout; JAK inhibitors; ankylosing spondylitis
Dr Sunil Kumar is a Consultant Rheumatologist and Clinical Head of the Rheumatology Department at Counties Manukau. Dr Kumar has participated in 27 clinical trials as the Principal Investigator at Counties Manukau, in rheumatic conditions including rheumatoid arthritis, psoriatic arthritis, lupus, ankylosing spondylitis, gout and others.
Dr Mark Sapsford is a Consultant Rheumatologist at Counties Manukau. Dr Sapsford returned to New Zealand in 2019, having completed a rheumatology research fellowship in Cambridge, UK. Dr Sapsford is involved in a number of on-going clinical trials in a range of rheumatic conditions.
AREAS of INTEREST: Dialysis studies, chronic kidney disorder; peritoneal dialysis, pruritus, renal lupus
Dr Kalpa Jayanatha is a Consultant Renal Physician at Counties Manukau and an Honorary Senior Lecturer at the University of Auckland. Dr Jayanatha has a special interest in renal transplantation, glomerulonephritis, and medical education.
Dr Hari Talreja is a Consultant Renal Physician at Counties Manukau and is the Clinical Lead for Hypertension and Renal Transplantation. He has specialist training from Canada, and holds a masters degree in Clinical Effectiveness from Harvard. Dr Talreja led the development of the Hypertension Clinic at Counties Manukau and has a particular interest in this area.
Dr Adam Mullan is a Nephrologist at Whangārei Hospital with specialty interests in Renal Nutrition, Renal Stone Disease and Home Haemodialysis. Dr Mullan has acted as local PI for a number of multicentre randomised controlled trials in Nephrology, is contributing to the CARI kidney stones guideline update and is on the ANZSN Haemodialysis working group.
Dr Tien Huey Lim is the Principal Investigator for the chronic hepatitis B and metabolic dysfunction-associated steatohepatitis (MASH) trials at Counties Manukau. Dr Lim works on a portfolio of commercial and investigator initiated trials, as part of the global effort to find a cure for hepatitis B and MASH.
Dr Sriharan Selvaratnam is a Consultant Gastroenterologist Middlemore Hospital. Dr Selvaratnam’s focus includes include gastroenterology, liver disease and diagnostic/therapeutic endoscopy.
Dr Adele Melton practises as a Consultant Gastroenterologist at Middlemore Hospital. Dr Melton’s special interest cover endoscopy – diagnostic and therapeutic, inflammatory bowel disease, irritable bowel syndrome, gastro-oesophageal reflux, coeliac disease, colorectal cancer and liver disease.
AREAS of INTEREST: Moderate-severe chronic obstructive pulmonary disorder (COPD); severe asthma; bronchiectasis; pleural disease; vaccines; pulmonary infections. Obstructive sleep apnoea (OSA) devices
Dr Paul Dawkins is a Consultant Respiratory Physician at Counties Manukau and an Honorary Senior Lecturer at University of Auckland. Dr Dawkins specialises in all areas of respiratory medicine including sleep disorded breathing. He has a specialist interest in airways disease, bronchiectasis and lung cancer.
Dr Stuart Jones is the Clinical Head and Respiratory Physician at Counties Manukau. Dr Jones holds a PhD from Otago University in the assessment of airway inflammation and specialises in general respiratory medicine with a particular interest in sleep medicine, asthma and airway inflammation.
Dr Conroy Wong is a Respiratory and General Physician at Counties Manukau and Honorary Associate Professor at the University of Auckland. He has extensive experience in leading grant-funded and commercial clinical trials and his primary research interest is the evaluation of new treatment options for bronchiectasis. He also has research interests in pulmonary infections, asthma and COPD.
Dr Robert Lewis is a Respiratory Consultant at Middlemore Hospital. Dr Lewis specialises in pulmonary vascular disease, interstitial lung disease and pleural medicine.
Dr Elaine Yap is a Respiratory consultant at Counties Manukau. Her sub specialty interests are in interventional bronchoscopy, pleural medicine and airways disease in particular asthma.
Dr William Good is a Respiratory and Sleep Physician at Middlemore Hospital and Senior Lecturer at the University of Auckland. Dr Good’s focus includes inflammatory airways disease including bronchiectasis and asthma, pleural disease and management of respiratory failure with non-invasive ventilation. He is also interested in all areas of sleep medicine.
Dr Conor O’Dochartaigh is a Consultant Respiratory Physician at Middlemore Hospital and Honorary Clinical Senior Lecturer at the University of Auckland. Dr O’Dochartaigh has extensive experience in Respiratory and Sleep Medicine with a particular focus on Interstitial Lung Diseases and Non-invasive Ventilation.
AREAS of INTEREST: Adult addiction and mental health, maternal mental health, infant mental health, child and youth mental health, elderly mental health
Dr Ian Soosay is the Clinical Director of Mental Health & Addiction Services at Counties Manukau. Dr Soosay has an interest in increasing research activities in the department, focusing on clinical trials for digital health applications with an aim to provide evidence based research outcomes that enable decision making regarding access and support in the provision of mental health services.
Dr Rajendra Pavagada is a Consultant Psychiatrist at Middlemore Hospital.
Dr John Baker led the formation of the Diabetes service at Counties Manukau as Clinical Head from 1998-2003. Dr Baker is an Endocrinologist for Counties Manukau, and has been the Principal Investigator in over 40 clinical trials in diabetes and lipid disorders at Aotearoa Clinical Trials. In 2025, Dr Baker stepped down as the Clinical Director of ACTT and moved into his current role of Clinical Head of the Whitiora Diabetes Service.
Dr Orr-Walker is the Clinical Head of Endocrinology at Counties Manukau and has extensive experience with a wide range of Endocrine disorders. Dr Orr-Walker is involved in the national quality and guideline programs in diabetes and cardiovascular disease, and has led a number of commercial/grant trials in diabetes treatment.
AREAS of INTEREST: Vaccines; chronic lung disease; bronchiolitis, nutrition; cord clamping and monitoring; respiratory syncytial virus and influenza
Dr Michael Meyer is an active researcher and Consultant Paediatrician at the Kidz First Neonatal Care at Counties Manukau. Dr Meyer leads a number of grant funded research trials in neonatal care at Counties Manukau and plays a pivotal role in developing neonatal equipment in collaboration with Fisher and Paykel.
AREAS of INTEREST: Wound healing, pain management, conscious sedation, anti-scarring
Dr Paul Baker is the Clinical Director for Burns at the New Zealand National Burns Centre at Counties Manukau. He is a Consultant Plastic & Reconstructive Surgeon and the NZ Vice President of ANZBA. Special interests include scarring, skin substitutes, emerging cellular-based skin regenerative technologies, and all aspects of adult and paediatric burn care.
Assoc. Prof Locke is a Consultant Plastic and Reconstructive Surgeon at Middlemore Hospital, specialising in breast reconstruction and microsurgery. Her research interests include skin engineering, skin cancer treatment and other translational research projects focused on improving her patients outcomes.
AREAS of INTEREST: All vascular and non-vascular interventional radiology, including stents, balloons, biopsy devices, dialysis access, thrombolysis, vertebroplasty, TACE, UFE and thermal ablation of lung, liver, renal and parathyroid lesions
AREAS of INTEREST: Adult severe eczema; adult moderate-severe psoriasis; hidradenitis suppurativa; atopic dermatitis; cutaneous lupus erythematosus and the application of Raman spectroscopy to dermatology
Associate Professor Paul Jarrett is the Clinical Head of Dermatology at Counties Manukau. His primary interest is medical dermatology. He has research interests in inflammatory skin disease especially cutaneous lupus erythematosus and the application of Raman spectroscopy to dermatology.
Dr Cheng Huang is a Consultant Dermatologist at Counties Manukau Health and has worked with Aotearoa Clinical Trials since 2023. Dr Huang has served as an investigator on a diverse range on clinical trials throughout her fellowship in Sydney and since her return to Aotearoa. Her research interests include bullous pemphigoid, psoriasis, alopecia areata, hidradenitis suppurativa, and atopic dermatitis.
AREAS of INTEREST: Endometriosis, fibroids, cervical dysplasia