About Our Practice

Established in 1989


Mount Merrion Medical Clinic is a vibrant, friendly family practice situated in the heart of Mount Merrion.

The Clinic was established in 1989 by Dr Noreen O’Hanrahan and relocated to its current premises in 2006.  Dr Gillian McLaughlin joined the practice in 2010 followed by Dr Thomas O’Byrne in 2018. After a long successful career Dr Noreen O’Hanrahan retired in 2022 and will be missed both by her patients and the clinic.


Our clinic has continued with Dr Gillian McLaughlin, Dr Thomas O’Byrne, Dr Sinéad Kelly-Keating, our practice nurse Vanessa Mulcahy, supported by our dedicated administration team of secretaries Kristina O’Regan, Patricia Haughton and practice manager Anne Burns. 

Meet Our Staff

Dr Gillian McLaughlin

Dr Gillian McLaughlin

(BSc, MBChB, DRCOG, DCCH, MRCGP) graduated from the University of St Andrews University and then from Manchester University.

Gillian completed her General Practice training in Edinburgh and worked as a GP partner in London before moving with her family to Dublin in 2005. Gillian has been working in Mount Merrion Medical Clinic since 2009.   

Gillian has a special interest in all aspects of Women’s Health including contraception, pre-conception investigations, antenatal and postnatal care and menopause management plus child health – from the newborn baby to the adolescent.  She is also interested in ongoing chronic disease management, having completed a Certificate in Diabetes care in 2019.

Dr Thomas O'Byrne

Dr Thomas O'Byrne

(MICGP, MB BCh, BAO, DRCOG) is a graduate of University College Dublin.

Following two years of surgical training Thomas decided to specialise in general practice and completed postgraduate training with the south east GP training scheme.

He gained international experience by working in Australia for three years prior to returning to Dublin to join Mount Merrion Medical Clinic in 2018.

He manages patients for the full range of issues that arise in general practice and has a special interest in chronic disease management, men’s health and minor surgical procedures.

Dr Thomas O'Byrne

Dr. Sinéad Kelly-Keating

(MICGP, MB, BCh, BAO, DCH) is a graduate of University College Dublin.

Sinéad trained originally as an Electronic Engineer in Trinity College Dublin. In 2002 she returned to University College Dublin graduating in 2007. She completed the Mid-Leinster Specialist GP Training Scheme and membership examinations to the ICGP in 2013. During this time Sinéad obtained a Diploma in Child Health. Following this she has worked in a GP practice in West Dublin until recently.

Sinéad has a special interest in Women’s Health, including working as a Breast Physician in the Mater Misericordiae University Hospital. She is very much looking forward to joining the team in Mount Merrion Medical Clinic.


Vanessa Mulcahy


Nurse Vanessa Mulcahy joined our practice in 2020. Vanessa is a highly experienced nurse, and has worked in acute hospitals in Ireland and abroad. 

She has a special interest in cardiology, and operates the ECG, vaccine, phlebotomy and cervical smear clinics as well as assisting with minor surgical procedures.

Mairead Keys

Mairead Keys

Foot Health Practitioner (RGN MCFH AMICPO)

Mairead is a member of the College of Foot Health and an associated member of the Irish Chiropodists & Podiatrists Organisation.
Building on years of experience as a General Nurse in Ireland and overseas, she has specialised in foot healthcare for the last eight years.

She provides patients with a wide range of foot healthcare services and advice which includes toenail cutting, mechanical reduction of thick nails, removal of corns and calluses, fungal nail infections, ingrown toenails, verrucae & diabetic foot care. 

To arrange an appointment:

T: 086 2513576      E: maireadkeys@gmail.com


Mairead Keys

Dr. Anya Murphy

Clinical Psychologist

Anya Murphy received her Doctorate in Clinical Psychology from Trinity College Dublin in 2005. She has over 15 years experience working in adult mental health, initially as a psychologist with the Tallaght Adult Mental Team and subsequently as a Senior Psychologist running the psychology service for South Meath Mental Health Team. For the last 4 years she has been working part-time providing the psychology service for the Royal Hospital Donnybrook and joined Mount Merrion Medical Clinic one morning a week in May 2022.
Anya has extensive training and experience in working with a wide range of difficulties. She can offer short interventions targeting relief of symptoms of anxiety, stress and depression or more process based therapeutic work in relation to loss, trauma, relationship difficulties and adjustment to major life changes. Anya uses evidence based therapy techniques including CBT, DBT, MBCT, Compassion Focused Therapy which are tailored to the needs of the patient.

To arrange an appointment:

T: 086 3857265         E: anya.murphy1@gmail.com


Mairead Keys

Anne Burns

Practice Manager

Anne took over from Brendan Geraghty, our previous Practice Manager in March 2022.  Her medical career started with her training as a Healthcare Assistant. From there she moved on to working in a medical practice for 5 years as Secretary/Receptionist.  During this time she completed a Diploma in Phlebotomy and is currently studying Medical Administration.


Mairead Keys

Patricia Haughton

Practice Administrator


Patricia joined the practice in February 2022 with over 10 years experience working in a community organisation and then 3 years with Mowlam Healthcare in Mount Carmel Community Hospital. She enjoys travelling and is a member of her local community group.


Mairead Keys

Kristina O'Regan

Practice Administrator


Kristina joined the practice in January 2022. She had previous healthcare experience working in a busy consultant’s office. She enjoys spending time in the outdoors and volunteering. 



Dr Noreen O’Hanrahan (Retired 2022)

(MB, BCh, BAO, LRCSI, LRCPI, DCH, D Obs, FPC) is a graduate of the Royal College of Surgeons in Ireland

Dr Noreen worked in several Irish hospitals and established the practice in 1989.  She has postgraduate qualifications in infertility, family planning, contraception, child health and dermatology.

She has a special interest in antenatal care, mother and baby health, paediatrics, and adolescent health.  “Being a mother really helped me as a GP” says Dr Noreen, “having to combine clinical work and family life, I can better understand the demands on families”.

She also takes an interest in HRT, the menopause, and care of the older patient.  She has worked extensively with the “Living Well With Dementia” project locally. She will be missed both by her patients and the clinic following her retirement in 2022.