This website uses cookies to function correctly.
You may delete cookies at any time but doing so may result in some parts of the site not working correctly.


Dr John Ryan (m)


BM (Southampton 1982), MRCGP, DRCOG, DFFP

GMC No. 2570790

Having joined the Alverton practice in 1989 Dr Ryan is now the senior partner. 

Dr Ryan's areas of special interest include minor surgery and diabetes for which he is the practice lead.  He also leads a Sexual Health service based within the practice which he runs together with Dr Sandra Treleven.  To support this service he maintains close links with the Genito-Urinary Medicine Department at The Royal Cornwall Hospital, Truro and assists at their clinic on a regular basis.

Dr Ryan has a long standing and active interest in clinical research since and is a former member of the Local Ethics Committee.In recent years the Alverton practice and its patients have participated in many pivotal clinical research studies benefiting scientific advances within medicine.

Dr Ryan is actively involved in remote area medicine regularly providing medical support on maritime expeditions.  He is the Deputy Lifeboat Medical Advisor for the Penlee Lifeboat and is also a senior GP trainer.

Dr Richard Cheyne (m)


MB ChB (Birmingham 1994), MRCGP

GMC No. 4156204

Dr Cheyne attended medical school in Birmingham and then worked in hospital posts in both Torbay and North Devon.He moved to Cornwall in 1999 to complete his GP training at the Wadebridge and Camel Estuary practice.  In 2003 he moved to Penzance and joined the Alverton practice and became a Partner in 2004.

During his time with the practice, he has developed an interest in the treatment of drug and alcohol problems and works part time as a Specialist GP with the Cornwall Drug and Alcohol Team.Dr Cheyne has an active interest in teaching and is a trainer for GP Registrars in additon to helping support the medical students attached to the practice.

"Over the last 10 years I have learned a lot from my patients.  My ethos is to put patients at the centre of my work.  I believe in being transparent and honest with my patients, encouraging choice and autonomy in their treatment."

Dr Matthew Boulter (m)


TD, VR, BSc(Hons), MB ChB, (Leeds 2000), PhD, MRCS(Ed), MRCGP, DipIMC(RCSEd)

GMC No: 4712750

Having initially trained in surgery, Dr Boulter moved to Cornwall to follow a career as a GP joining the Practice in 2009.  He became a Partner in 2012.  His background in orthopaedic surgery enables him to provide musculoskeletal expertise and advice for our patients. 

He is the practice lead for Minor Surgery and runs courses to help other GPs develop their minor surgical skills.

Dr Boulter has more than 25 years service as an Army Reservist and has deployed all over the world in this role including an operational tour of Afghanistan. He has an active interest in the healthcare of our military veterans.

His other medical interests include pre-hospital care and remote area medicine. He often provides medical advice to the Cornish Pirates and he is the Medical Adviser for the Penlee Lifeboat.  He is also a registered doctor with the British Boxing Board of Control and the Martime and Coastguard Agency and thus is able to perform specialist medical examinations for both.

Dr Boulter also works for the NHS Kernow Clinical Commissioning Group and was instrumental in the development of the Urgent Care Centre at West Cornwall Hospital and the Musculoskeletal Interface Service.  He is the Chair of the Penwith Living Well board and is currently actively involved in a major data sharing project for the benefit of patient care and also a pioneering project supporting children and young people with psychological and behavioural issues.

Dr Sandra Treleven (f)

Associate Doctor

BSc, MB BS (London 1996), MRCGP, DRCOG, DFSRH 

GMC No. 4316226

Dr Treleven qualified from St George's Hospital Medical School in 1996.  She undertook further postgraduate training in Basingstoke and qualified as a GP in 2002.  She continued to work as a GP in Basingstoke until 2008 and then moved to Cornwall & has been working at the Alverton practice ever since.

Her special interests are women's health, including contraception & menopause.  Together with Dr John Ryan, she also runs the the Sexual Health Clinic held at the Alverton practice.

Dr Treleven is also actively involved in medical education and is an academic tutor & examiner at the  Peninsula College of Medicine & Dentistry.  She supervises the medical students attached to the practice and also co-organises training workshops for GPs involved in medical student education.

Dr Andrew Boorne (m)

Associate Doctor

BSc, MB BS (London 1997), DRCOG, DTM&H, MRCGP (Exam) 

GMC No. 4441373

Dr Boorne trained at St Mary’s/Imperial College London and later spent time at the Liverpool School of Tropical Medicine studying for his Diploma in Tropical Medicine & Hygiene (DTM&H). He then worked extensively in some of the poorer parts of the world.  For two years he was the senior doctor running in a rural hospital in Papua New Guinea. He joined the Alverton practice in February 2009 and for obvious reasons is the practice lead for travel and tropical medicine.

He is also one of the local GPs who also work for the Acute GP Service based at the Royal Cornwall Hospital in Truro.  This service helps GPs access the investigations, tests and some of the expertise of the hospital, quickly and ideally without all the inconvenience to the patient.  In many cases this can avoid an unnecessary hospital admission.

Dr Boorne is also involved with the Peninsular Medical School, and has a minor role with the ‘Health for the Homeless’ service.  He is a committed Christian and is a family man with 2 sons.

“I am proud to be a GP at Alverton practice, as I think we have developed a great team who all really try to do our best for our patients.  I may not always have the best answer for your problem, but I will do my best to seek it out for you.”

Call 111 when you need medical help fast but it’s not a 999 emergencyNHS ChoicesThis site is brought to you by My Surgery Website