Alder Hey in the Park | Alder Hey Children's Hospital

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All the consultants and nurses look after all endocrine conditions and have their own areas of expertise.

We welcome referrals from colleagues in primary and secondary care across the region and would like to introduce our team to you:


Dr Mohamed Didi

I have been a consultant paediatric endocrinologist in the Trust from 1997. I am clinical lead for Endocrinology in the Trust. My main clinical interests are congenital hyperinsulinism, endocrinology in the transition period from childhood to young adult life and endocrine problems in survivors of childhood malignancy and brain tumours. My research interest has been in the thyroid especially in the preterm and term infant.

Specialisms include congenital hyperinsulinism, Endocrinology in the transition period from childhood to young adult life and Endocrinology in survivors of childhood malignancy and brain tumours.

Dr Jo Blair

Dr Blair leads clinical research and has a special interest in neuro-endocrinology (endocrine problems that originate in the brain).

Dr Urmi Das

Dr Das has particular expertise in the care of children with disorders of sex development (DSD).

Dr Das, Dr Blair and nurse specialist Zoe Yung work closely with colleagues in gynaecology to look after the hormone aspects of gynaecological problems.

Dr Poonam Dharmaraj

I trained at the University of Liverpool Medical School and my main Paediatric training was at Alder Hey Children’s Hospital and then the Royal Victoria Infirmary, Newcastle-upon-Tyne.

Previously I was a consultant in Paediatric Endocrinology and Diabetes in Newcastle and joined Alder Hey in 2008.

I have an MD from the University of Liverpool.

My special interest is Paediatric Metabolic Bone Disease and I lead the metabolic bone service in Merseyside, Cheshire and North Wales.

Dr Senthil Senniappan

I joined as Consultant in Paediatric Endocrinology and Diabetes at Alder Hey in March 2014. I completed my endocrine/diabetes training at Royal Manchester Children’s Hospital, Manchester and Great Ormond Street Hospital, London.

My special interests include congenital hyperinsulinism, growth disorders, hypoglycaemia, CAH, calcium & bone disorders and complex forms of diabetes mellitus. I had completed PhD on ‘Gene expression profiling & role of mTOR inhibitors in Congenital Hyperinsulinism’ at UCL, London.

My clinical and basic science research interests include genetic causes of growth disorders, hyperinsulinism, vitamin D and diabetes mellitus. I actively contribute to various professional bodies like BSPED, ESPE and RCPCH.


Specialist Nurses

Mr Peter Laing

Peter Laing is an Advanced Nurse Practitioner, and has many years of experience in the care of children with hormone problems. He also has a particular interest in supporting boys with hormone problems affecting puberty.

Special interests include Septo-optic dysplasia, Andrology and disorders of sexual differentiation

Mrs Zoe Yung

Zoe Yung looks after children with problems of the thyroid gland.

Her special interests include Endocrinology, Gynaecology and Disorder of sexual differentiation

Mrs Lynn Hatchard

Lynn’s has a special interest in Calcium and metabolic bone disease

Associate Specialist

Dr Renuka Ramakrishnan

Medical secretary

Liz Hewitt



If you would like to find out more about the service, please call Liz Hewitt on 0151 252 5281 to arrange a convenient time for one of the team to contact you.

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