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Our Team



Dr Hooi You Mei 

Bachelor of Dental Surgery (BDS) Malaya


Dr Hooi You Mei is a founding partner of the Sim & Hooi dental group in 1985. She continues to lead and grow the practice, with a strong focus on preventive care and patient education. She is a mother of three boys, one girl and nine cats, and enjoys regular shopping trips to Ace Hardware.



Dr Daniel Sim Zhi- Jie

Bachelor of Dental Surgery (BDS) IMU

Dr. Daniel Sim joined our group in 2019. Following his parents' footsteps, he decided to take on dentistry because of his passion for both healthcare and handiwork. In his time off, Dr. Daniel enjoys staying active as an avid Brazillian Jiu-Jitsu and yoga practitioner.



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Dr Felicia How Pei Min

Bachelor of Dental Surgery (BDS) SEGi

Dr Felicia How joined the Sim & Hooi Dental group in 2021. She's an avid jazz and bossa nova music lover. In her free time, she enjoys playing piano and improvising music.


Dr Hooi Sek Kee

Bachelor of Dental Surgery (BDS) Malaya


Dr Hooi Sek Kee joined the Sim & Hooi dental group in 2000. In his free time, he enjoys practicing Ikebana (Japanese floral arrangement) and honing his skill as an amateur chef.


Dr Larry Au- Yong Siew Wai

Bachelor of Dental Surgery (BDS) Malaya


Dr Larry Au-Yong joined us upon graduation from Universiti Malaya in 2000.

In 2008, he received his MFGDP(UK). 

Dr Au-Yong sees and treats children of all ages ;) and delights in empowering his patients with the knowledge and know-how to improve, regain and maintain the health, appearance and function of their pearly whites.

He goes beyond just treating teeth, as recent advances in medicine conclusively proves that the healthy function of the mouth is intimately linked to the health and function of the airway and breathing, posture, sleep quality, heart health and overall quality of life.

Of special interest to Dr Au-Yong are the sleep-related breathing disorders (SRBD). Sleep apnea, Upper Airway Resistance Syndrome and snoring are some examples of SRBD, which can affect both children and adults. 

In people with SRBD,  their sleep quality is significantly affected by their inability to properly breathe while asleep. Unfortunately, most sufferers of SRBD are largely unaware that they are not breathing properly while asleep.

Signs and symptoms of SRBD in adults include snoring, open mouth while asleep, teeth grinding during sleep, dry mouth when waking in the morning, morning headaches, unrefreshing sleep, daytime tiredness, chronic fatigue, lethargy, chronic aches and pains, insomnia, mental fog, and depression. A significant percentage of people with hypertension, heart disease and diabetes also suffer from SRBD, which complicates their heart and metabolic issues.

While in children, SRBD is manifested by one or more of the following: mouth breathing, teeth grinding while sleeping, restless sleep, hyperactivity, ADHD-like behaviour, poor performance in school, frequent nasal congestion, ear infections, etc.

Fortunately, SRBD can be managed and resolved by a team of specialists comprising dentists, ENT surgeons and other medical specialities. People who are successfully treated often report significant positive changes to their overall health and life. 

Dr Au-Yong seeks to detect signs of SRBD in his patients, who may not even be aware that they have SRBD, so that he can help them improve their breathing, sleep quality and their overall health.

Dr Au-Yong is happily married with 2 teenage children.




Dr Mabel Wu Huey Lu

Bachelor of Dental Surgery (BDS) IMU

Certificate of Implantology (Washington)

Dr Mabel Wu joined the Sim & Hooi Dental group in 2019. An avid animal lover, she is the proud owner of a dog and a cat. She loves going to the dog park on weekends and also spends her free time in the gym and indulging in books. Fun fact! She has a twin 3 minutes younger than her.




Dr Ngo Wei Ming

Bachelor of Dental Surgery (BDS) VMU-PIDC

Diploma in Oral Implantology (Naples)

Masterclass in Periodontology (Taiwan)

Dr Ngo Wei Ming joined the Sim & Hooi dental group in 2014. In his free time, he enjoys playing and watching sports. He pursues badminton, marathon running, and is an avid football fan (Arsenal!).




Dr Timothy Sim

Bachelor of Dental Surgery (BDS) IMU

Dr. Timothy Sim joined the Sim & Hooi dental group in 2021. Having had it drilled into him from a young age by his mother, Dr. Hooi You Mei, he now has the same strong focus on preventive care and on teaching others how to maintain their dental health. In his spare time, Dr. Tim enjoys practicing Muay Thai and gaming.
Fun fact, Dr. Daniel is his brother! Care to guess who's older?




Datin Dr Hjh Sorayah Bt. Sidek


Bachelor of Dental Surgery (BDS) Malaya

MSc Periodontics

FDS RCPS (Glasgow)


Datin Dr Sorayah joined us in 2017 as Consultant Periodontist. She retired from the Ministry of Health, Malaysia, after 32 years in public service. With more than 25 years specializing in gum care, she believes that, with encouragement and the right attitude towards oral health, patients can enjoy a better quality of life.




Dr Ho Ting Khee


Doctor of Dental Surgery (DDS) USM

Master in ClinDent (Fixed & Removable Prosthodontics) (Manchester)

MFDSRCS (Edinburgh)

Dr Ho Ting Khee joined us in 2019, a Prosthodontist with wide knowledge and experience in enhancing smiles and restoring chewing function in her patients.

At home, she continues to create smiles and encourage chewing among her family and friends with her passion in baking, saturating her kitchen with aromas of buttery flour and chocolate. 



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Doctor of Dental Surgery (DDS) USM

Master in ClinDent (Periodontology) (London)

MPerio (RCS) (Edinburgh)

Dr Kong Sheng Earn


Dr Kong completed his specialist orthodontic training from King’s College London. He believes in high standard dentistry, and continuous development to serve his patients better. An avid golfer, Dr Kong is still looking for the perfect swing.




Dr Nurulhuda Binti Mohd


Doctor of Dental Surgery (DDS) USM

Master in ClinDent (Periodontology) (London)

MPerio (RCS) (Edinburgh)

Dr Nurulhuda Mohd joined Sim & Hooi dental group in 2019 as Consultant Periodontist.


She was trained at King’s College London under the watchful eyes of Dr Booth, Dr Ide and Prof Hughes.

She actively participates in Malaysian Society of Periodontology (MSP) and was elected to the position of Secretary for year 2018-2020.

She enjoys sipping rose flavoured English tea while watching much better bakers than her compete in the Great British Bake-Off.




Dr Saba F Hussain


Bachelor of Dental Surgery (BDS) Baghdad

Master in Clinical Orthodontic, Baghdad

Dr Saba joined Sim and Hooi dental group in 2018. She has more than 13 years experience in Orthodontics and most of orthodontic appliances  including Invisalign, customised orthodontic appliances ( Insignia). She is fond in art, interior design, music, cooking, baking and making dessert.

Eager to learn new technologies in orthodontics.




Dr Sherrie Chong

Oral Surgeon

Bachelor of Dental Surgery (BDS) Malaya

MFDS RCS (England)

MClinDent (OMFS) (Malaya)

Dr Sherrie Chong joined the Sim & Hooi dental group in 2013. She is an Oral and Maxillofacial Surgeon dealing with oral surgical cases including dental implants and impacted wisdom teeth. She graduated with her basic dental degree in 2004 and completed her Masters in Oral and Maxillofacial Surgery in 2012.




Dr Tan Kien Cheng


Bachelor of Dental Surgery (BDS) Malaya

M.SC (London)


DDO RCPS (Glasgow) A.M

Dr Tan Kien Cheng joined the Sim & Hooi dental group in 2001. Fun fact! Dr Tan served in the Malaysian Armed Forces Medical & Dental Services for 2 years, and was commissioned as a Captain.