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Dr Roi Cheng, DIANM

Chiropractor/Clinical Director

Dr Roi graduated from the prestigious chiropractic course in RMIT university with a Masters in Clinical Chiropractic with distinction. He has practiced at Croydon Chiropractic Centre since 2013 and has transitioned to become clinical director since July 2018. Dr Roi's interest in chiropractic started when he discovered how much it helped him personally, and feels very honoured to now be able to help many others in the Croydon community to achieve spinal health and wellness.


In 2023, Dr Roi completed his post-doctoral studies and has passed the board examinations to be inducted into the International Academy Of Neuromusculoskeletal Medicine as a Diplomate and has thus been conferred the title of DIANM. He is only the second chiropractor in Victoria to achieve this title and the 10th in the whole of Australia. His studies have given him specialised training in MRI interpretation, and in diagnosing and managing complex pain syndromes, migraines, dizziness, balance disorders and degenerative conditions of the spine and extremities. He is passionate about providing evidence based, outcome driven chiropractic care to help patients achieve their goals.


Dr Roi is the proud husband of Joan and proud pet-dad of Owen. Dr Roi and Joan are eagerly expecting the arrival of their first child in April 2024. In his spare time, Dr Roi enjoys keeping active, enjoying a good meal with friends, and likes dabbling in technology. He is always happy to have a chat and loves a good laugh!


Dr Roi's Qualifications Are:

  • Bachelor of Health Science in Chiropractic (with Distinction)

  • Master of Clinical Chiropractic (with Distinction)

  • Diplomate of the International Academy of Neuromusculoskeletal Medicine (DIANM)

  • Member of the ACA (Australian Chiropractors' Association)

  • Professionally registered with the Chiropractic Board of Australia

*Currently Dr Roi Cheng has extremely limited availabilities for appointments for New Patients, but is available to supervise on more complex cases with the treating chiropractor on request.

Roi at the computer MRI.jpeg
Yanika Portrait garden.jpeg

Dr Yanika Chiangthong


Dr Yanika will be joining our team at Croydon Chiropractic Centre in January 2024 and brings with her a wealth of experience. She has two Bachelors degrees; in anatomy/physiology (La Trobe University, 2011) and chiropractic (RMIT University, 2013), and she has also graduated with a Masters degree in clinical chiropractic from RMIT university in 2016.  She has worked in Melbourne, Cairns and the Gold Coast and has recently made the move back to Melbourne.


Dr Yanika has a special interest in jaw pain and dysfunction (TMJD) and has special training in this area. She also has advanced training in women’s health, pregnancy and perinatal care. Dr Yanika is confident in seeing patients of all ages and is well-versed in manual as well as lower force techniques.


In her spare time, Dr Yanika enjoys surfing and reading books on self development and growth. She is also a fitness enthusiast with a keen interest in strength and conditioning!


We are delighted to welcome Dr Yanika to our practice. She will be starting on 17 January 2024, and will be working Tuesdays, Wednesdays, Thursdays and Fridays every week.

Dr Yanika's qualifications are:

  • Bachelor of Health Science (Anatomy and Physiology)

  • Bachelor of Applied Science (Chiropractic)

  • Master of Clinical Chiropractic

  • Member of the ACA (Australian Chiropractors' Association)

  • Professionally registered with the Chiropractic Board of Australia

Dr John Ghali


Dr John graduated from RMIT University in 2017 with two Bachelor degrees in Chiropractic and has since worked closely with an accomplished sports chiropractor in a multi-disciplinary practice in Melbourne. Prior to that, he worked as a sports trainer for a local soccer club for two years, supporting the players through their injuries and keeping them playing at their full potential.


Dr John is an experienced chiropractor well versed in diagnosing and treating neck pain, headaches, low back pains and hip pains. He also has a special interest in extremity injuries such as tennis elbow, knee/ankle/foot injuries, and plantar fasciitis. He uses a multi-modal approach, utilising various techniques and rehabilitation protocols to achieve the best outcomes for his patients. He also has a certificate in dry needling, an effective technique using very fine needles to treat chronically stiff muscles and joint tissues. 


As an avid sports fan, Dr John enjoys playing both outdoor and indoor soccer. He is a Barcelona FC and Liverpool FC supporter (but we won’t hold that against him!). He also loves spending time with his family and going to the beach.


Nicknamed “the smiling chiro”, Dr John has a warm and approachable nature, and is well-liked by all of his patients. He is passionate about helping his patients thrive and achieve a better quality of life through chiropractic care.


Dr John will be supporting the team while Dr Roi takes time off for parental leave and will be working on Tuesdays and Saturdays. He is very excited to be a part of the team, so please help us in welcoming him to our clinic!

Dr. John's qualifications are:

  • Bachelor of Health Science

  • Bachelor of Applied Science (Chiropractic)

  • Certificate in Dry Needling

  • Member of the ACA (Australian Chiropractors' Association)

  • Professionally registered with the Chiropractic Board of Australia

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