BMBS (Hons) MMedSc PGCert HBE MAcadMEd FHEA DFSEM (UK) MRCGP
London, SW1W8EE
London, SW1W8EE
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Dr Theo Criswell is a dedicated GP with a strong commitment to combining evidence-based medicine with a warm, patient-centred approach to care. As a fifth-generation doctor, he values building long-term relationships with patients and supporting individuals and families through every stage of life — from child health to later-life and palliative care.
He completed his medical training with Honours and Distinction, receiving a Dean’s Commendation for excellence in undergraduate medicine. Following this, he undertook broad postgraduate training at Frimley Park Hospital and St George’s Hospital, London, gaining experience across a wide range of medical specialties. He enjoys the full scope of general practice, with particular interests in preventative medicine, musculoskeletal health, mental health, and sexual health.
Alongside his clinical work, Dr Criswell has a strong interest in medical education and research. He holds a Master’s degree in Medical Sciences and has published research in neuropathology. He also completed a postgraduate qualification in Medical Education and is a Fellow of Advance HE and a member of the Academy of Medical Educators. He continues to teach medical students as a tutor at City St George’s, University of London.
Dr Criswell also holds a Diploma in Musculoskeletal Medicine and is a Fellow of the Faculty of Sport and Exercise Medicine. He regularly works with medical teams at sporting events, with a particular interest in endurance sports.
Outside medicine, Theo enjoys music, tennis, golf and skiing, and lives in South London with his family.
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The Academy of Medical Educators
Royal College of General Practitioners
Faculty of Sports and Exercise Medicine (FSEM)
General Medical Council
No. 7603580
6B Sloane Square, London, United Kingdom, SW1W8EE
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This summary was created by AI based on recent reviews
Dr Theo Criswell interacts with patients in a kind and thorough way, making them feel heard and at ease. He is professional; he ensures all concerns are addressed and explained. Patients note his attentive approach to various medical issues, including anxiety support and newborn care, receiving supportive and exceptional care. Dr Criswell applies extensive medical knowledge to complex scenarios, with expertise extending to preventative health measures like health assessments and regular health checks.
I contacted Dr Criswell for my anxiety problem and his understanding and support changed my life. I’m so very grateful to him.
My recent visit was a telephone consultation with Dr Theo. I love that the Criswell practice offer telephone consultations, it’s so convenient when you don’t have to be examined or see a doctor face to face. It works for my treatment & saves a lot of my tine.
I couldn’t have asked for more. Knowledgeable, thorough. Cautious and a delight to spend 20 minutes talking to. Like a slimmer, Dr Michael. The Apple doesn’t fall far from the tree! Thank you, Theo. Best wishes, Jeremy.
Dr Criswell has helped me with a number of issues over the years. He’s always incredibly gentle, firm and kind and I always know that I’m in safe hands. He’s very thorough, thinks of everything and you never feel that he hasn’t done everything he possible can.
Dr Theo Criswell listens carefully and is a very kind, calm, and professional GP. He is thorough in his approach to care and I feel comfortable discussing my health concerns with him. I trust his judgement and am very happy with the care I have received.
Dr Theo is the most attentive and thorough doctor. It’s been a long time that I have wanted to find someone like him who actually spends the time listening to your issues and then digs deep. He doesn’t leave anything to chance so for the first time since my own GP sadly died, I have found a doctor in whom I have full confidence.
Theo Criswell is an exceptional doctor. He came to see my seriously unwell husband at home. Theo combines the ability to apply his extensive knowledge to a complex clinical scenario with compassion and sensitivity.
I feel completely confident in Dr Theo Criswell's professional and diagnostic skills and very well supported
Theo is my hero! He saved me from a lot of pain and a long wait. Truly exceptional.

What are Dr Theo Criswell's reviews like?
Dr Theo Criswell's overall patient rating is 5 out of 5 stars on Doctify. This is based on 32 reviews.
What languages does Dr Theo Criswell speak?
Dr Theo Criswell speaks English
Where is Dr Theo Criswell located?
Dr Theo Criswell primarily practices at The Criswell Practice, located at 6B Sloane Square, London, United Kingdom, SW1W8EE
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What are Dr Theo Criswell working hours?
Dr Theo Criswell is working Monday (08:30 - 17:00), Tuesday (08:30 - 17:00), Wednesday (08:30 - 17:00), Thursday (08:30 - 17:00), Friday (08:30 - 17:00)
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Does Dr Theo Criswell accept new patients?
Dr Theo Criswell generally accepts new patients.
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