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Meet Our Team

Want to learn more or book a a consultation?

Book a consultation with one of our friendly dentists! We offer a wide range of dental services and highly skilled in advanced dentistry and cosmetic smile makeovers. 

Dr Richard Lee - Pinnacle Dental Miranda and Cronulla

Dr Richard Lee is a registered Dental Surgeon in Sydney, Australia. Dr Richard Lee grew up in Sydney and graduated from the University of Queensland.  Richard has gained a wealth of experience by looking after the dental needs of the local community in Tamworth and Newcastle, as well as volunteering his time to help disadvantaged communities in Cambodia and Vietnam.  In line with the core values of Pinnacle Dental, Richard believes very strongly in the delivery of pain-free, high quality dental treatment.  He has special interests in children’s dentistry, cosmetic dentistry, implants and prosthodontics.

Dr Lee holds an Honorary Clinical Educator position with the University of Sydney, and has attained the esteemed Membership to the Royal Australasian College of Dental Surgeons. He is an active member of the Australian Dental Association and Australian & New Zealand Society of Paediatric Dentistry.

Dr. Richard Lee

Principal Dental Surgeon

Clinical Educator University of Sydney

BDSc Hons (Qld), MRACDS (GDP)


Dr Louis Kei is a registered specialist prosthodontist in Sydney, Australia.  He completed his Bachelors of Dental Science with honours from the University of Queensland and Doctorate in Clinical Dentistry (Prosthodontics) from the University of Sydney.  He is also a Member of the Royal Australasian College of Dental Surgeons in both the general dental practice and the specialist prosthodontics stream by examination. Louis currently holds a position at the Westmead Centre for Oral Health as a visiting Prosthodontist and is actively involved in the training of post-graduate students at the University of Sydney. As a highly active member of the dental community, Louis has published in dental journals and is a member of the International Team of Implantologists, Australian Prosthodontic Society, Academy of the Australian and New Zealand Prothodontists, and the Australian Osseointegration Society.    

Dr. Louis Kei

Specialist Prosthodontist

Clinical Lecturer University of Sydney

BDSc Hons (Qld), MRACDS (GDP),   

D. Clin. Dent. (Syd), MRACDS (Pros)

Dr Matthew Kei - Pinnacle Dental Miranda and Cronulla

Dr Matthew Kei is a registered Dental Surgeon in Sydney, Australia. Dr Matthew Kei is a gentle and empathetic dentist who is passionate about delivering the highest level of care for his patients. He attained his Bachelor of Dental Science degree from the University of Queensland in 2009, and enjoys all facets of dentistry with particular interest in prosthodontics and orthodontics. Matthew has attained the prestigious Fellowship with the Royal Australasian College of Dental Surgeons after completing the Final Examinations. He has also completed the College's Membership program prior and has a Postgraduate Diploma in Orthodontics with Progressive Orthodontic Seminars (POS). Aside from dentistry, Matthew enjoys traveling, hiking, running and photography. In his spare time, he takes pleasure in the company of family and friends and enjoys spending time at church.

Dr. Matthew Kei

Dental Surgeon

      BDSc (Qld), MRACDS (GDP),     FRACDS (GDP)

Dr. Teresa Sung

Dental Surgeon

BHScDent (LTU), MDent (LTU)

Dr Teresa Sung was born and raised in Sydney. She obtained her Bachelor of Health Sciences in Dentistry and Master of Dentistry from La Trobe University. Teresa has always been passionate about giving back to the community. She has provided dental care in remote areas of Vietnam and India and volunteered for local organisations. She had practised in several rural towns of Victoria, including Bendigo, Ballarat, Mildura and Wodonga, as well as the Hills in Sydney. 

In addition to English, Teresa speaks Cantonese and Mandarin and strives to provide high-quality care tailored to her patient’s needs. Her attention to detail, caring nature and empathy ensures she always has her patient’s best interest at heart. Teresa has worked with many young children and understands the importance of providing a comfortable, fun and welcoming dental experience. 


Teresa has completed multiple courses, including courses in cosmetic dentistry and oral surgery amongst others. This ongoing commitment to attending courses enhances her skillset and ensures that she practices the latest evidence-based techniques and treatments. 

In her spare time, Teresa enjoys spending time with her friends and family, cooking and travelling. 

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Dr Nancy S. Chen

Dental Sedationist

Clinical Senior Lecturer University of Sydney

B.Med.Sci (USyd), B.DENT (USyd), Grad Dip Clin Dent (Conscious Sedation and Pain Control) (USyd), MSc Med (Pain Management) (USyd)

Dr Nancy S. Chen offers high level, dental sedation services, as our visiting Dental Sedationist. Dr Chen has extensive experience in all forms of dental treatment under sedation. 

Dr Chen is a Senior Dental Sedationist at Westmead Centre for Oral Health and holds an Honorary Clinical Appointment as a Dental Conscious Sedation Practitioner, Department of Anaesthetics, Westmead Hospital. Dr Chen is a Clinical Senior Lecturer with the School of Dentistry, University of Sydney for the Graduate Diploma of Clinical Dentistry in Conscious Sedation & Pain Control and Doctor of Dental Medicine programmes. She is actively involved in training future dental sedationists. Furthermore, she serves on the Executive Council of the Australian Society of Dental Anaesthesiology (ASDA) and on the Future Leaders group of the International Federation of Dental Anaesthesiology (IFDAS). 

Dr Chen is warm and caring with a gentle touch. She is passionate about her work and strives to be at the forefront of the dental sedation field with the ultimate goal of helping you get the dental treatment you deserve in a safe, warm and comfortable environment – at our dental surgery. 

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Dr Ying Shi Chang

Specialist Oral Surgeon

BDS GradDipClinDent

(Surgical Dentistry) (USYD)

DClinDent Oral Surgery (USYD)


Dr Ying Shi Chang is a board registered Specialist Oral Surgeon, having obtained her specialist qualifications from the University of Sydney. 


Dr Chang holds the position of Staff Specialist with NSW Health and operates across a number of hospitals in the Sydney Local Health District including the Sydney Dental Hospital. She has had a range of experience, having previously held positions at the Nepean and Westmead Centres for Oral Health, Orange Base Hospital, Dubbo Oral Health Clinic, Royal North Shore Hospital, and Charles Sturt University Clinics. Dr Chang also works in Private Practice at Gosford.


For the past 10 years Dr Chang has been involved in the Oral Surgery teaching programmes at both Charles Sturt University and the University of Sydney. She currently holds the position of Lecturer in Oral Surgery at the University of Sydney (School of Dentistry) and is involved in the education and training of both graduate and post-graduate students. 


Dr Chang is passionate about patient-centric care. She believes in and is committed to open communication and collaboration with patients, their carers, and other health practitioners (general dentists, medical doctors and both medical as well as dental specialists) to provide personalised evidence-based care to her patients. 


Dr Chang is available at our rooms in Miranda and has operating privileges at St.George Private Hospital.

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Belinda Smith

Practice Manager

Bel joined Pinnacle Dental Group in 2012. She believes the best part of her job is to chat to our clinic's patients and helping calm them prior to, and during treatment no matter their age or ability – hand holding is her specialty. She also looks forward to cuddling any babies that come in with their parents!  When Bel is not at work, she enjoys spending time with her husband of 20 years and their two teenage children. Bel also volunteers as a facilitator of a social group for children on the autism spectrum as her son has additional needs.

Ash - Pinnacle Dental

Ash joined Pinnacle Dental in 2008 as a casual job after school. Since then she has completed a Bachelor of Commerce at Wollongong University and achieved a Certificate IV in Dental Assisting and Radiography through Foundation Education. Ash is an avid traveller.  When she is not thinking about work, she is daydreaming about her next overseas destination. On weekends, she enjoys spending time with her partner and dabbling in many hobbies.   

Ash King

Clinical Lead Dental Assistant


Morgan - Pinnace Dental

Morgan has been working at Pinnacle Dental group since 2012 after completing a Cert III in Dental Assisting.  She enjoys meeting new people and catching up with Pinnacle’s regular patients that come in, and ensures that their dental experience is as comfortable as possible.  In her spare time, Morgan enjoys the company of her friends and family.  She also enjoys exercise, especially running, as well as playing soccer on the weekend with her local club.

Morgan MacKenzie

Dental Assistant

Bex Pfrengle_ Pinnacle Dental Group

Bex is a passionate dental nurse and a busy Mum of two. She has been in the Dental industry for over 10 years and has spent 6 of those years working alongside Dr Louis Kei and the amazing team at Pinnacle Dental Group. Rebecca gained her Certificate III in Dental Assisting in 2013. In her free time, Rebecca enjoys doing pilates, relaxing with the family and of course... eating chocolate. 

Bex Pfrengle

Dental Assistant

Dr. John Walsh

Dental Surgeon (Retired)

Dr John Walsh graduated with Honours from Sydney University in 1977. John has retired from active dental services in 2014, but has continued to be closely associated with the surgery.