Our Team

Dr Joris Broeders

MD PhD (Surgery), SCCA

Dr Broeders provides NSMC with skin cancer medicine services, such as Skin Checks. Dr Boeders is not available for general medical consults.

Dr Joris Broeders is an Accredited Skin Cancer Doctor with high distinction (Skin Cancer College of Australia and New Zealand). He graduated from Utrecht University School of Medicine in The Netherlands. After obtaining a medical degree, he completed his PhD in the Department of Surgery of the Royal Adelaide Hospital in 2011. He is registered as a medical specialist in Australia

Dr. Helen Greer


Dr Greer is currently on Medical Leave, Please call the practice for further information or to plan interim care

Dr Greer is a Private Billing GP and will predominantly consult via tele-health. Medicare rebates are applied where applicable

After graduating from the University of Adelaide, Helen was a Resident at both the Royal North Shore and St Vincent’s Hospitals in Sydney. She underwent GP training with the RACGP and then began practicing in North Sydney. During the ensuing years she has worked as a surgical assistant with local specialists and at Royal North Shore Hospital she has participated in both the Asthma and Pain Clinics and been part of the Hospital’s shared ante-natal care program. 

Helen’s main areas of special interest are family medicine, women’s health and psychological medicine and she enjoys treating patients of all ages, from newborns to the older generation. She has an over-riding passion for holistic and lifestyle medicine and aims to make at least part of every consultation focus on preventative medicine strategies.  To further pursue her interest in this field, Helen is currently embarking on a Masters of Lifestyle Medicine. 

During her many years of practice in North Sydney, Helen has thoroughly enjoyed and appreciated the privilege of being involved in the long-term care of so many patients and their families.

Beyond the practice, Helen worked for many years as Honorary Medical Advisor to the Australian Guide Dogs Association and is part of a GP advisory panel on IVF issues.

Outside of medicine, Helen enjoys reading, bush-walking, snow-skiing, travel and being a mother of three daughters.

Dr. Campbell Howitt


Dr Campbell Howitt graduated from the University of Edinburgh in 2010, obtaining his Bachelor of Medicine and Bachelor of Surgery going on to obtain his Membership of the Royal College of General Practitioners in London in 2016 and his Fellowship to the Royal College of General Practitioners in Australia in 2017.

With special interests in Paediatrics and Adolescent health, Dr Howitt continued on to obtain his Diploma of Child Health in 2014. He has created positive community links by working out in our local communities through the GP in schools programme and also working closely with Sydney University and Notre Dame with Medical Students.

Campbell also has Diploma of Sexual and Reproductive Health, which has expanded his practice within diverse community groups to promote positive relationships between health care workers and the Adolescent and LGBTQI community.

With a keen interest in ongoing professional development, Dr Howitt has commenced studies in Cosmetic medicine, which will broaden his skill set to treat more widely common dermatological conditions through complex procedural lesion removals and repairs, utilisation of non-invasive current technology including IPL machines and treat medical conditions such as hyperhidrosis, cervical dystonia, overactive bladder and chronic migraines with Botulinum Toxin.

Dr. Emma Kim

Dr Emma Kim graduated from the University of New South Wales, and trained as a junior doctor at the Royal North Shore Hospital. She has previous experience in medical research in dermatology with a number of research papers published in medical journals.

She is currently undergoing further training in skin cancer medicine. Other than dermatology, her special interests include female reproductive medicine and paediatrics.

Dr Kim can consult in English and Korean.

Dr Kim will be consulting Monday, Tuesday, Friday Saturdays and Sundays

Dr Kim provides a Mixed Billing service on Saturdays and Sundays.

For mid-week services Dr Kim still provides Bulk Billing.

Dr. Nataliya Kot


Dr Kot will join the team at North Sydney Medical Centre from the 30th of Aug 2021.

Dr Kot Graduated 1991 from Kharkiv Medical University (Ukraine).She Immigrated to Australia in 2009. Dr Kot has interests in women’s health, family planning, paediatrics, cosmetic medicine and travel medicine.

Dr Kot will be available Mondays to Thursdays.

Dr Kot is a Bulk Billing GP

Dr Kot speaks Ukrainian and Russian.


Dr. Vincent Lertamornthep

MBBS(Syd), DTM&H, GradDipPaed, FRACGP

Dr Lertamornthep is a Bulk Billing GP

Dr Lertamornthep graduated from the University of Sydney in 1995. He is a Fellow of the Royal Australian College of General Practitioners and holds a Graduate Diploma in Paediatrics. Vincent’s Diploma in Tropical Medicine and Health enables him to provide extensive travel advice for our patients. He is fluent in Thai.

Dr. Ngaire Millener


Dr Millener graduated from the University of Auckland in 1984. Her special interests include Women’s Health and Travel Medicine.

Dr. Gareth Ng


After receiving his FRACGP in 2017, Dr Gareth Ng went on to gain further experience and skills in a number of disciplines including Obstetrics and Gynaecology where he went back to hospital to complete his RANZCOG diploma. He offers services including:

-Mirena/IUD insertion and removals

-Implanon insertion and removals

– Iron infusions when indicated for iron deficiency and Menorrhagia (heavy periods)

– Shared antenatal care(registered SAC GP with Sydney North Local Health District)

He holds a certificate in Skin Cancer Medicine and offers:

  • Full skin checks
  • Skin biopsies
  • Skin excisions

Dr Ng also spent time working in the ENT outpatient department of Logan Hospital as part of the GP with Special Interests program and has a diploma in ENT.

He previously received a certificate from the Sydney Child Health Program (formerly known as Diploma in Child Health) as well as the ACEM Emergency Medicine Certificate.

Dr Ng provides Bulk Billing to new patients (initial consults). Fees may apply after the initial consult for all patients.

Dr Ng will be available Monday, Tuesday, Thursday, Friday  at present. Outside of working with North Sydney Medical Centre, Dr Ng works on rotation with the Royal Flying Doctor Service.

Dr. Amanda Pieris

Dr. Amanda Pieris is a highly experienced general practitioner who enjoys caring for patients of all ages and stages of life. She graduated from UNSW and has worked in general practice since 1984. Dr Pieris worked at Beecroft for an extensive period before relocating overseas from 2009 until 2016.

She joined North Sydney Medical Practice in 2018, having moved locally. While overseas Dr. Pieris completed a masters degree in clinical education from Flinders University and did volunteer medical work in several countries.

She enjoys all areas of general practice and family medicine, and has special interest in women’s health, lifestyle and travel medicine. She loves spending time with her family, especially her four wonderful grandchildren.

Dr. Richard Loizou


Dr Loizou graduated from Sydney University in 2006 and since that time has provided medical services to the Australian Defence Force. Dr Loizou is a qualified Diving Medical Examiner and works closely with the Royal Australian Navy’s school of diving medicine. His special interests include adolescent health and sports medicine.

Dr. Katya Danko

MBBS RACGP Dip. Paediatrics (USYD)

Graduated 1988 from Moscow Medical Academy ( named after I.M. Sechenov)
Interests: Woman/Children Health & General Medicine
Diploma in: (1) Child Health (2) Environmental Health (3) Ophthalmology (4) Primary Care Dermatology


Dr. Diane Xiao

BLibStud(Dist), MBBS(hons), FRACGP

Dr Xiao will be returning from Maternity Leave from the 20th September 2021

Dr Xiao will be providing a mixed billing service. Bulk Billing will continue for Children 0-16, Concession, Pension and Health Care Card Holders. Private fees may apply for all other patients.

Dr Diane Xiao joined our team in February 2019 and is a graduate of the University of Sydney. She holds certificates from the Sydney Child Health Program (formerly Diploma of Child Health), FPAA National Certificate in Reproductive and Sexual Health and is qualified for Implanon NXT insertion and removal procedures. She has also undergone further Mental Health Skills Training (Level 2) in Focused Psychological Strategies.

Diane is passionate about her role as a family GP in providing comprehensive, individualised, quality care throughout various stages of life from contraception/sexual health and preventative health to chronic disease and mental health care.

Allied Health

Space to Relate Psychology

Adena Silverstein - Registered Psychologist

Adena is a fully registered Psychologist with the Australian Health Practitioners Registration Authority - AHPRA (Registration No: PSY0001125660) and a member of the Australian Psychological Society - APS (membership No: 108525). She shows genuine and empathic support and concern for her clients. She engages her clients in working collaboratively with her, with the aim of increasing their feeling of well-being. She utilises various therapeutic frameworks to guide sessions with clients. Sessions are tailored to assess and address the specific needs and concerns of each client, according to their unique situation.

Master of Psychology – Counselling
Monash University, Australia, 2008

Bachelor of Education – Education Psychology
Rand Afrikaans University, 2000

Bachelor of Arts – Education Psychology (Majors: Education and Psychology)
University of South Africa,1998

Higher Diploma of Education
Johannesburg College of Education, 1994

Adena has extensive experience in both government funded organisations and private practice. She has provided counselling for individuals (adults, adolescents and children), families and couples across a broad range of presentations.

Areas of interest
● Depression
● Anxiety
● Stress
● Grief and Loss
● Life transitions
● Workplace functioning

● Migrant adjustment
● Weight and healthy lifestyle
● Relationship concerns
● Family matters
● Parenting
● Stepfamilies