Board Members

Member Elect

Dr David Kosenko


Dr David Kosenko graduated with MBBS from Monash University in 1987 and attained his Fellowship of the Royal Australian College of General Practitioners in 1993. He became a Director of Ti-Tree Family Doctors in 1994, started performing cosmetic procedures in 2007 and founded Impress Cosmetic Medicine in 2010.

He has a diverse experience ranging from acupuncture and injection sclerotherapy in the 1990s to Diving and Underwater Medicine and more recently an interest in general practice dermatology, skin cancer and cosmetic medicine. He has been an examiner to the RACGP, is a current member of the Medical Advisory Committee to Beleura Private Hospital and a clinical supervisor for the Eastern Victorian General Practice Training Program.

He was a member of the CPSA and is a founding member of the CPCA. He prides himself in honesty and integrity and believes that success comes through doing things to the highest standard, as demonstrated by Ti-Tree Family Doctors being awarded the General Practice of the Year.

He set up Impress Cosmetic Medicine as a small, bespoke cosmetic practice that focuses on office based cosmetic medicine procedures. He is passionate about his work and about cosmetic medicine in general.

Dr David Kosenko has held the position of CPCA Vice President since 2018 and Victoria & Tasmania State Representative since 2020.

Dr David Kosenko has indicated that he is willing to fulfil the position of College President.

Dr Sean Arendse

Vice President

Dr Sean Arendse graduated from King’s College London and has a background as an emergency consultant at The Alfred Hospital in Melbourne.

He founded Flawless Rejuvenation Skin Clinics in 2007 and enjoys working across both the fields of Emergency medicine and Aesthetic medicine.

In 2018, Dr Arendse completed a postgraduate diploma in clinical dermatology with Queen Mary’s College London. He has a keen interest in the use of both energy-based devices and non-energy-based treatments, in achieving the best aesthetic result for his clients, and is a KOL for a number of injectable and device companies.

He has a special interest in cosmetic medical emergencies which he has published on and is an advocate for safety in the aesthetic industry.

Dr Sean Arendse has held the position of CPCA Secretary, and Victoria & Tasmania State Representative since 2018.

Dr Scott Allison


Dr Scott Allison is an experienced Cosmetic Physician and trainer in cosmetic injectables who is dedicated to delivering and developing innovative, non-invasive aesthetic procedures.

After graduating from Medical School at the University of Queensland in 2011, Dr Allison undertook his residency at the Princess Alexandra Hospital where he worked across a variety of areas including dermatology, plastic surgery and infectious diseases. Following this he completed a Master of Science in Aesthetic Medicine at the Queen Mary University of London and a Master of Public Health at the University of Queensland. He is a Fellow of both the Cosmetic Physicians College of Australasia and the Royal College of General Practitioners.

Dr Allison is a trainer in cosmetic injectables with Allergan Aesthetics and is passionate about finding new and interesting ways of teaching safer injecting and facial anatomy to clinicians. He is also a Medical Officer Reservist in the Australian Army and a Senior Lecturer for UQ School of Medicine.

Driven by a passion to empower others, Dr Allison is committed to finding new and innovative non-invasive treatments to help clients achieve their aesthetic goals.

Dr Keturah Hoffman

Education Officer

Dr Keturah Hoffman has been active in medical politics since the 1990s, being the Inaugural president of the Cosmetic Physicians Society of Australasia (CPSA) and having been advisor to the Medical Board of Western Australia. Dr Hoffman has also run cosmetic medical conferences and served on the board of the Cosmetic Physicians College of Australasia (CPCA) (formerly CPSA) for over a decade.

She has nearly 30 years’ experience in cosmetic and vascular medicine and continues to maintain an active teaching and administrative role in the specialty.

Her experience in running Day Spas and formulating and manufacturing skincare products as well as medical politics and health administration brings a wide range of contacts and skills in business and people management, and she continues to have a keen interest in improving regulation and delivery of medical services in Australia.

Dr Keturah Hoffman has held the position of Membership Liaison Officer, Education Officer, and Western Australian State Representative since 2018.

Dr Naomi McCullum

Public Relations Officer

Dr Naomi McCullum joined the Cosmetic Physicians Society of Australasia (CPSA) in 1999. When the CPSA became the CPCA in 2015, Dr Naomi was admitted as a Fellow.

Non-surgical cosmetic medicine was Dr Naomi’s career choice from when she completed her internship.

Dr Naomi opened her first cosmetic clinic in 2002 in Paddington, in Sydney’s Eastern suburbs. She is the founder of The Manse Clinic in Sydney, which has a team of 5 cosmetic doctors. The clinic caters to Australia’s most serious beauty achievers.

Dr Naomi is a social media expert and writer, and started one of the world’s first Cosmetic medical blogs in 2011. Her Instagram account is the most followed in the cosmetic medical industry in Australia, and in the top 10 internationally.

Dr Carolyn Choy


Dr Carolyn Choy is a highly skilled Cosmetic and Laser Doctor, founder of Ultimate Aesthetics with over 25 years clinical experience in both general practice and the cosmetic and aesthetic field. Since graduating from medicine from the University of Western Australia, she has devoted her time to being a general practitioner and a cosmetic physician.

In her early times in the hospital, she realised how much she loved all aspects of medicine but also working with her hands and after leaving the hospital, working in the emergency departments and surgical departments, she pursued her first fellowship in general practice. She attained her Fellowship in General Practice. She continued with further educations, attending conferences, and felt called to move beyond general practice and realised that there was a real social need where men and women of the world were constantly being disempowered and by helping people improve their outside appearance by doing a few minor procedures, this so greatly improved a person’s self-esteem.

Helping people see how beautiful they really are within. Feeling beautiful allows us more easily to connect to joy, life and all its possibilities. With that goal in mind, she continued to in her pursuit of excellence to be able to master advanced injection techniques and laser treatments. She understood how scarring could be so soul destroying and has specialised in various techniques to help improve specifically acne scarring and keloid scarring. In that time, she has continued to grow and learn and attained a second fellowship, this as a Fellow of the Cosmetic Physician Collage of Australia.

She has enjoyed growing her team of doctors and nurses and therapist, all with the same mind set, of helping all of us age with grace, with minimal downtime and with the greatest effect of natural looking beauty or as we say, “believable beauty.”

Dr Sarah Sparks

Member Representative

Dr Sarah Sparks was born in England, then raised and educated in Hong Kong. She qualified in Medicine from Liverpool University, UK in 1994. From there, Sarah served in the Royal Air Force as a Medical Officer in Aviation Medicine and Search and Rescue.

Sarah came to Tasmania 20 years ago where she worked in General Practice and completed the FRACGP. Following this, Sarah then worked in Accident and Emergency for several years before moving into Cosmetic Medicine 12 years ago.

Sarah now runs a boutique Aesthetic Medical practice in Hobart and is a great believer in the concept that ‘less is more’!

Dr Ricky Sia

Member Representative

Dr Ricky has received extensive training in various fields of Medicine in the United Kingdom and Australia. He works primarily in advanced facial rejuvenation especially with injectable treatments. Dr Ricky values lifelong learning and regularly attends expert workshops to continue his professional development.

He enjoys teaching and sharing of clinical pearls. He has recently joined the teaching taskforce of Merz Aesthetics to train cosmetic injectors in ethical administration of cosmetic injectables and is also a trainer for MINT threadlift.

He is also very passionate about advancing the calibre of Cosmetic Medicine in Australia and is excited to have the opportunity to contribute and collaborate with colleagues to carry the College forward as a synonym of credence and integrity.

Dr Simone Doreian

Member Representative

Dr Simone Doreian MBBS (Hons) FCPCA FRACGP DRANZCOG is a Fellow of Cosmetic Medicine, from Melbourne, Australia.

Dr Doreian is a respected international lecturer in Aesthetic medicine, Director of Dr Simone Doreian Private Clinic and a consultant at Erase Aesthetic Services since 2004.

She is passionate about teaching from first principles of anatomy, natural proportion, and gold standard aesthetic practice.