Our Doctors

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Dr David Lin - BMed, MD (UNSW), FRACGP

David joined Summers Avenue Family Practice in 2021 and works at both Mt Colah and Hornsby.


He completed his medical degree from the University of NSW. Additionally, David has completed a diploma of Child Health and has a certificate in Skin Cancer Management and Mental Health. David is qualified to insert Implanon and give the Yellow Fever vaccination.


David speaks Mandarin.


David and his young family live locally and in his spare time he enjoys trying new restaurants and playing the keyboard for his church.

Please visit www.drdavidlin.com.au to read more about Dr David Lin.


Dr Renu McVay - MBBS, FRACGP, Dip.Obstetric

Renu joined the team in 2012 and now works at the Mt Colah branch. She completed her medical degree in 1992 and gained her FRACGP in 1996. She has extended her training in pediatrics, women's health and mental health and has a Diploma in Obstetrics.

She enjoys playing the piano, singing, dancing and has been in an amateur theatre production.

Her special interests are in Women's Health, Child Health and Mental health.

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Dr Anny Marrett - MBBS

Anny graduated from the University of Singapore in 1980 and was doing training in psychiatry before emigrating to Perth in 1986 with her husband and 3 sons. She completed her Australian Medical Council requirements within 6 months and did a certificate in acupuncture while in Perth.  She moved with her family to Hornsby in 1990 and started the Summers Avenue Family Practice in 1994, initially as a solo practice.

She loves gardening (all the succulents in both practices were planted by her from her own garden). She also enjoys singing and is learning to play the piano again. Having grown up in multicultural Singapore, she can speak Malayalam, Tamil and Malay.

Anny has a special interest in Child Health, Women's Health (including Implanon insertion for contraception and shared antenatal care with Hornsby Hospital ) and Travel medicine, including Yellow Fever vaccination.


Dr Fiona Murphy - BSc, MBBS (Hons) , FRACGP

Fiona joined the team in 2008 and works at the Hornsby surgery. She graduated from the University of NSW with Honours in 1999 and spent several years in the hospital system, initially on the physician training pathway, prior to switching to GP training.  She gained her FRACGP in 2007, receiving the Tony Buhagiar Memorial Medal for the highest mark in the NSW/ACT RACGP exam.

She enjoys spending time with her two children and their friends as well as studying dog psychology and behaviour with her three legged German Shepherd cross, Duke.

Fiona offers comprehensive care to patients of all ages and particularly enjoys caring for multiple generations within families at the practice. Her areas of special interest include Mental Health, Women's Health and Chronic Disease Management, so she appreciates her patients making long appointments as required.


Dr William Nguyen - MBBS, FRACGP

William joined the Mt Colah team in 2019. He graduated from the University of NSW in 1999 and completed a clinical research honours year at the Sydney Children's Hospital working with childhood epilepsy and brain tumours. He was on the surgical training pathway in general, trauma and vascular surgery before switching to GP training  and gaining his FRACGP in 2009.

He enjoys playing the guitar and is a black belt in Taekwondo.

His special interests are Men's Health, Children's Health, Trauma and Skin Cancer Management, Minor Surgery and Travel Medicine, including Yellow Fever Vaccination.

He speaks fluent Vietnamese.

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Dr Kylie Peterson - MBBS, FRACGP, Cert.Women's Health, Cert.Family Planning

Kylie joined the team in 2018 and is now based at Mt Colah. She graduated in 2010 from the University of Western Australia and gained her FRACGP in 2018. She has extended her training in Women's Health and Family Planning and Mirena insertion.

Kylie moved back to Sydney to be close to family. She loves to travel, enjoys reading and music and is an avid Sydney Swans supporter.

Her special interests are in Children's Health, Women's Health (including insertion of Implanon and shared antenatal care with Hornsby Hospital) and Travel Medicine including Yellow Fever Vaccination.


Dr Lucy Rigby - MBBS, FRACGP, Dip.Child Health

Lucy joined the team in 2009 having moved back to Sydney from Tamworth. She works at Mt Colah. She graduated in 1991 from the University of Sydney and gained her FRACGP in 1995. She has a Diploma of Child Health from Westmead Hospital and enjoys all aspects of general practice. She has worked as a Medical Educator training General Practitioners.


Lucy has three daughters and invests a lot of her time in her native garden. She loves to travel and is studying French.

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Dr Jennifer Shone - BSc(Hons), MBBS, FRACGP, Dip.Child Health, Dip.Med Education

Jenny joined the practice in 2019. She graduated as a physiotherapist in 1997 with a special interest in sports physiotherapy. She completed her medical degree from the University College London in 2005 and gained her MRCGP in 2012. She has diplomas in Child Health and Medical Education (distinction) and works part-time lecturing to medical students at the University of Sydney and being a clinical supervisor for new GPs. She performed a similar role in South Africa before emigrating to Australia in 2016.


Jenny enjoys spending time with her husband and 2 young boys exploring Sydney and its surrounds.


Her special interests are Women's Health (including shared antenatal care), Child Health, Chronic Disease Management and Musculoskeletal Medicine.

Nurses: Helga Anderson at Hornsby and Shelby Colley at Mt Colah

Audiologist: Neelu George

Podiatrist: Joanne Koutchavlis

Dietician: Sue Jones

Practice Manager: Katrina Jones (Mt Colah)

Practice Manager: Mina Chhabhadia (Hornsby)

Accounts Manager: Sarah Thomas (Mt Colah)

Receptionists: Jade Byrne, Ann Coyne, Sammy Gaupset, Chitra Muralidharan, and Charlotte Ryan