The Team

We love
what we do

Zest Medical have a range of services that it provides to the Ashburton community, from general family practice to mental health & cosmetic medicine.


Dr Samantha Cullis



Graduated Monash University in 1999
Fellowship to the Royal College of General Practitioners 2008

Dr Samantha Cullis loved her time studying medicine and enjoyed positions at Monash Medical Centre and Royal Adelaide hospital after graduation.

In 2005, she started General Practice training and has thoroughly enjoyed practicing ever since. Samantha finds her position as a GP in the Ashburton area very satisfying, and considers it a privilege to work in this area of medicine.

“I have loved getting to know so many people over the years and enjoy watching people take control over their own health and wellbeing.”

Samantha is available for a range of consults at Zest Medical – across family health, mental health and sexual health, including the administering of iron infusions and the insertion of mirenas and implanon.

In her spare time, her three great kids (which she drives around a lot) and her two furry friends keep her busy!


Dr Bronwen McGraw



Graduated Monash University in 2002
Diploma of Obstetrics and Gynaecology 2005
Cosmetic Medicine 2015

Dr Bronwen McGraw is a caring and compassionate GP. She loves all aspects of general practice including paediatrics, women’s health, men’s health, mental health and chronic disease management. She is qualified to perform insertion and removal of contraceptive devices including IUDs and iron infusions.

In more recent years she has discovered a passion for cosmetic medicine which has led to further training and work at the Victorian Cosmetic Institute. She has a keen aesthetic eye and believes strongly in achieving natural looking results.

When she’s not consulting at Zest Medical, she’s spending time with her two amazing sons and enjoys keeping fit.


Dr Kate Naylor


Dr Kate Naylor at Zest Medical

Graduated Monash University in 2002
Certificate of Skin Cancer Therapeutics
Cert IV Breastfeeding Education

Dr Kate Naylor is an experienced GP who trained at Monash University (graduating 2002) before moving to Brisbane with her husband, where she completed her hospital years and subsequently, gained her Fellowship with the Royal Australian College of GPs in 2010.

Dr Naylor is qualified and comfortable with all aspects of general practice, and is happy to see anyone from any age group.  She does have three special interest areas which keep her busy:

Breastfeeding Medicine – Dr Naylor is a current IBCLC (International Board Certified Lactation Consultant) and has extensive experience helping women to breastfeed.  She makes a one hour appointment for all new breastfeeding pairs, so she can spend time understanding the situation before advising on all aspects of breastfeeding including under/oversupply, tongue tie, nipple/breast pain, poor infant weight gain, breast refusal, weaning and expressing breastmilk.

Antenatal Care – Dr Naylor is an approved Shared Maternity Care Provider for Monash Health, The Women’s Hospital, Mercy Hospital and Peninsula Health.

Skin Cancer – Dr Naylor developed an interest in skin cancer whilst working in Brisbane for 13 years. She has completed a Professional Certificate of Dermatoscopy and a Certificate in Skin Cancer Therapeutics, both through University of QLD/HealthCert.


Dr Cassandra Kenna


Dr Cassandra Kenna

MBBS, DRANZCOG, Certificate in sexual and reproductive health,
Fellow of the Royal College of General Practioners
Member of ACNEM (Nutritional and Environmental Medicine)
Specialist Women’s Health GP

Cassie is a local mum of 3 who graduated from Melbourne University in 2001. The majority of her career has been in women’s health including completing a diploma at the Mercy Hospital for Women as well as positions at Family Planning Victoria, Jean Hailes for Women and a perinatal focussed general practice. Over that time, she has come to understand that women are seeking individualised and up to date care in a comfortable and caring environment where they don’t feel rushed.

She is passionate about working with women to understand their whole life situation so they can achieve optimal health as they move through the stages of womanhood.  She incorporates changes in lifestyle alongside traditional medicine and is soon to be accredited as a meditation teacher in order to be able to offer local meditation classes specifically tailored for women’s issues.

Cassie works exclusively in women’s health offering 30 minute consultations for a wide range of women’s health issues including:

  Gynaecological and menstrual issues
  Iron infusions for iron deficiency
  Contraception including Implanon removal/insertion and Mirena removal
  Pregnancy planning, care of unplanned pregnancy
  Pregnancy care and postnatal checks – accredited for shared care of pregnancy
  Perimenopause and menopause management
  Women’s health checks
  Breast issues
  Stress and psychological issues


For any queries, or to make a booking, please don’t hesitate to contact us. You can give us a call on (03) 7035 0181, or click the button below to make a booking.

The clinic

Our clinic is located at 228 High Street, Ashburton.


We are open Monday – Friday 8.30am – 5.30pm & Saturday 9am – 12pm .


A: 228 High Street, Ashburton VIC 3147


P: (03) 7035 0181

F: (03) 7035 0172

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