Our Clinical Team

Dr. John Haughey

Dr John Haughey graduated from Queens University in Belfast in 2006 and completed the Sports Dentistry postgraduate cert at UCL Eastman. He is a general dentist with over 10 years’ experience and has a special interest in cosmetic, sports and neuromuscular dentistry. 

Having completed over 1000+ Invisalign cases and 100+ new smile veneers cases, John’s extensive cosmetic dentistry experience positively changes the confidence his patients have in their smile. Cosmetic treatments provided by John include new smile makeovers, veneers, orthodontics, whitening and cosmetic bonding.

His special interest in neuromuscular dentistry helps him successfully treat patient’s suffering with TMJD, headaches, migraine, neck pain, postural issues and sleep breathing issues.  

As well as providing sports dentistry support to amateur and professional athletes and teams from a wide range of sports, John has supported numerous single sport and multi-sport events including the London Olympics 2012, Commonwealth games in Glasgow 2014 and the Rio Olympics 2016 as a sports dentist. He is the Gaelic Players Association sports dentistry advisor – assisting in the provision of their Oral Health Awareness and Prevention programmes.

Dr. Laura O'Sullivan

BDS NUI (Hons), MFDS RCSEd, MSc AES (King’s College London)

Dr Laura qualified from University College Cork in 2011. She moved to London after graduating where she worked for six years. During her time in the UK, Laura completed many training courses both in restorative dentistry and facial aesthetics.  


Having successfully completed her MFDS exams, she became a member of the Royal College of Surgeons and decided to take on further postgraduate study.


She is currently completing a three-year Master’s degree in Aesthetic Restorative Dentistry in the world renowned Kings’ College in London. 


Dr Laura is especially passionate about smile design with a special interest in the minimally invasive approach to tooth restoration including aligning, bleaching and bonding which is less destructive to the natural tooth than traditional porcelain veneers/crowns. 


She is more than happy to discuss all the treatment options available to her patients and will take the time to guide them through the best options available to them.

Dr. Cathal Heavey


Dr Cathal Heavey qualified from The University of Manchester with a Bachelor of Dental Surgery (BDS). While studying there he achieved the SOMANDA (Alumni Association for Manchester School of Dentistry) award for the top overall results in fourth year examinations and the following year he was awarded the Charles H Preston Medal for the highest results in the final examinations. 


Once qualified Cathal spent two years in the UK - based in Cardiff. During this time, he split his work between the University of Cardiff Dental Hospital and an outreach general Practice in the Welsh Valleys. 


Whilst in Cardiff Hospital he gained valuable experience working under consultants in the areas of Oral Surgery, Oral Medicine, Periodontology and Emergency Dentistry. The rest of his working time was spent in the Welsh Valleys where he worked in an area of high dental need treating complex restorative cases. Whilst there Cathal took part in over 50 additional day courses developing all areas of his dental skills and knowledge.


During his time in the UK he obtained the Membership of the Faculty of Dental Surgery (MFDS) of The Royal College of Surgeons of Edinburgh. 


Cathal takes a keen interest in treating anxious patient’s, particularly those who have not attended the dentist for some time and he finds these cases particularly rewarding.


Cathal has always been very active and in his free time can be found bringing his four-year-old Beagle for a run or a hike in the Wicklow mountains or alternatively he can be found attempting to surf on the West coast of Ireland.

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Ms Martina O'Keeffe


​Having completed her world travels Martina decided to return to Dublin to study dental hygiene at TCD - graduating in 2000.

She has worked over the years with a number of clinicians who have trained both in Ireland and abroad and she feels this experience has resulted in her being a very competent hygienist. Her patients vary in age and nationality - and some she has been treating since she qualified all those years ago.

Martina takes a holistic approach to treatment and tailors all her treatment plans to the individual patient and their needs. She prides herself on being an excellent communicator with both her patients and colleagues. 

She particularly enjoys treating patients who are undergoing orthodontic treatment.

With her gentle demeanour and friendly approach Martina is capable of putting even the most nervous of patients at ease.

With an interest in art, sculpture and interior design Martina enjoys visiting various galleries – looking for inspiration and occasionally even renewing and upcycling old pieces of furniture. 

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Our Support Team

Sinead Farrelly

Front Office

Sinead joined the reception team at Chatham Street Dental Care in 2017. With over 20 years’ experience in customer service – including the retail, dental and medical fields – she quickly became a very valued member of the team.


She has a wealth of knowledge in her role as administrator and is passionate in her efforts to ensure our patients receive the best service possible.


Sinead works hard to ensure everyone – including the other members of the team - are looked after in a professional yet relaxed and efficient manner. 


Her spare time is mostly taken up with the demands of her 2 young children – but she wouldn’t have it any other way.

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