The Team

Learn more about the Discover Weight Loss team here.

Mr Jon Morrow

Bariatric, Laparoscopic & General Surgeon – BHB, MBChB, FRACS

Mr Jon Morrow, Bariatric Surgeon, Discover Weight Loss
Mr Jon Morrow, Bariatric Surgeon, Discover Weight Loss Team

Jon was born in Auckland and raised in Pakuranga. He attended medical school at Auckland University and graduated in 1997.

In 2008, Jon was admitted as a Fellow of the Royal Australasian College of Surgeons (FRACS, General Surgery). He completed further subspecialty training in weight loss surgery in Australia, at the Royal Brisbane and Women’s Hospital and Holy Spirit Northside Hospital. During this time, he gained expertise in gastric banding, gastric sleeve, and gastric bypass surgery, managing both primary and revisional surgery.

“It’s very rewarding to be part of your journey, follow your transformation, and watch your confidence grow.”

In 2010, Jon obtained a public appointment at Middlemore Hospital, Counties Manukau District Health Board as a consultant general surgeon. He is currently head of the bariatric surgery portfolio. One of his passions is training junior doctors in both general and bariatric surgery. He has also developed a database for auditing bariatric procedures to ensure safety and efficacy.

Jon is an executive member of the Australia and New Zealand Metabolic Obesity Surgical Society (ANZMOSS). He is also a member of the International Federation for the Surgery of Obesity and Metabolic Disorders (IFSO).


Dr Melanie Lauti

Bariatric Clinician – BSc, BMedSci(Hons), PGDipSurgAnat, MBChB, PhD

Dr Melanie Lauti, Bariatric Clinician, Discover Weight Loss
Dr Melanie Lauti, Bariatric Clinician, Discover Weight Loss Team

Melanie was raised in the South Island attending school in Christchurch before moving to Dunedin to undertake science and medical studies at Otago University. She obtained a science degree in anatomy and an honours degree by thesis in urogynaecology before graduating from medicine in 2006.  

Currently, Melanie is an advanced general surgery trainee and academic.  She has successfully completed the fellowship examination for the Royal Australasian College of Surgeons and a PhD in metabolic surgery. She is currently raising a young family whilst maintaining her interest in metabolic medicine, surgery and research.

Melanie is passionate about clinical and academic work in metabolic surgery, particularly with respect to optimising follow-up care and reducing weight regain.  She has over 15 publications in peer-reviewed journals, written a book chapter and been an invited speaker at international meetings.

Melanie is also a member of the Australia and New Zealand Metabolic Obesity Surgical Society (ANZMOSS) and the International Federation for the Surgery of Obesity and Metabolic Disorders (IFSO).


Kendall Parkinson

Dietitian – BSc, MDiet

Kendal Parkinson, Dietitian
Kendall Parkinson, Dietitian, Discover Weight Loss Team

Wellington born and Gisborne raised, Kendall spent five years at Otago University training to be a dietitian.

Working in bariatrics straight out of university, like many Kiwis, her itchy feet soon took her overseas. She went to the UK for two years broadening her dietetic experience at Wansbeck General Hospital, Ashington, United Kingdom and St Cadoc’s Hospital, Carleon, South Wales. Kendall also took the opportunity to explore Europe.

“I love watching patients rediscover their energy and vitality following a transformation in diet and lifestyle that bariatric surgery can facilitate.”

Since moving back to New Zealand, Kendall obtained a public appointment as a clinical dietitian at Northshore Hospital. She works with both inpatients and outpatients, helping patients prepare for bariatric surgery and navigate their post-operative journey.


Sherman Waitai-Cross

Health & Wellness Coach, Personal Trainer – BBus, NZIHF, REPs

Sherman Waitai-Cross, Health and Wellness Coach/Personal Trainer
Sherman Waitai-Cross, Health and Wellness Coach/Personal Trainer, Discover Weight Loss Team

Sherman grew up in West Auckland, in family friendly locations such as Herald Island and Kaukapakapa.

He joined Inland Revenue after leaving school then entered the finance industry and completed his Bachelor of Business. He also had a keen interest in health and fitness, which he pursued and researched in his own time.

After 21 years in the finance industry, Sherman decided to make a change. He obtained qualifications in Personal Training with the NZ Institute of Health and Fitness (NZIHF),  and Foundation and Advanced Coaching with Momentum Coaching (International Coach Federation aligned).

He is registered with the NZ Register of Exercise Professionals (REPs) as a personal trainer, and is currently studying with Precision Nutrition.

“Every person has their own formula for health and wellness, and coaching is a way of finding and sustaining that formula that changes as our lives evolve.”


Dr Adam Harper

Anaesthetist – MBBS, FFA RCSI

Dr Adam Harper, Anaesthetist
Dr Adam Harper, Anaesthetist, Discover Weight Loss Team

Adam was trained in the U.K. at The Royal London Hospital. He moved to New Zealand in 2005 having been seduced by the people and lifestyle here during a fellowship in 2003.

Bariatric surgery has been a passion in Adam’s professional career. He was involved in the early development of anaesthesia for weight loss surgery in the U.K. prior to the move to Middlemore Hospital here in Auckland where he holds a specialist position and is part of the weight loss team.

Adam will contact you prior to your surgery and will help ease your anxieties around the surgery as well as looking after you during your hospital stay.


Dr Susan Mahon

Registered Psychologist – PhD Psychology, PGDip Psych Practice, BSc Honours Psychology, BHSc Psychology

Dr Susan Mahon, Registered Psychologist, Discover Weight Loss Team

Susan is a registered psychologist and has a PhD in neuropsychology with an interest in  rehabilitation psychology. Susan provides psychological assessment and evidence-based treatment approaches including acceptance and commitment therapy, and cognitive behavioural therapy, to help clients achieve their goals.

Alongside her clinical work,  Susan holds an academic position as a senior lecturer in psychology at AUT. Her particular interest is in rehabilitation psychology, where she is the programme leader. This branch of psychology is aimed at maximising the independence, functional status, health, and social participation of individuals with chronic health conditions.

She is actively involved in research, having presented both at a national and international level, and published in a number of peer-reviewed journals. 

Susan is a member of the New Zealand Psychological Society and American Psychological Association (APA). She is a professional affiliate for the Society for Clinical  Neuropsychology and Rehabilitation Psychology and International Neuropsychological Society.