Contact information
Kate Markham
kate.markham@phc.ox.ac.uk
Colleges
Research groups
John Powell
MA MB BChir MSc PhD PGCertMedEd MRCPsych FFPH FFCI
Professor of Digital Health
- Professor of Digital Health Care
- NIHR Senior Investigator
- Senior Research Fellow, Jesus College
- Consultant Public Health Physician
- Digital Health Theme Lead, NIHR ARC
- Digital Health Theme Lead, NIHR HRC
- Co-Academic Director, MSc in Applied Digital Health
For prospective DPhil and MSc students
Please direct all enquiries about the MSc in Applied Digital Health to the Course Coordinator, Vivian Ansell vivian.ansell@phc.ox.ac.uk.
Please direct all enquiries about DPhil applications to the Graduate Studies Officer, Daniel Long daniel.long@phc.ox.ac.uk
I am not currently taking on any new DPhil students and I do not have any positions for visiting researchers or interns.
Background and current work
John Powell is an academic public health physician studying healthcare in the digital age and how and why people use information and communication technologies in relation to health, and how services can harness digital and AI tools to deliver benefit. He has combined an academic career as Professor and NIHR Senior Investigator at the University of Oxford with national policy roles, most recently as a senior clinician at NICE, where he advised the NHS on the safe adoption of innovations in surgery, and on the appraisal of digital health technologies. He is an expert adviser to national agencies including PHE and MHRA. He is an Honorary Professor at the University of Bristol, and the former Editor-in-Chief of NIHR Health Technology Assessment and NIHR Efficacy & Mechanism Evaluation. He has worked as a comedy writer and as a television drama advisor where his credits include Downton Abbey and the movie Ammonite. He was formerly Professor of Public Health at the University of Warwick where he helped establish the Institute for Digital Healthcare. He was the Clinical Director of NHS Choices, the NHS website. He has degrees in Social and Political Sciences and in Clinical Medicine from the University of Cambridge. He has an H-index of 62.
Summary CV and publications list
- Publications
- PDF document 185.0 KB
Summary CV and publications list
Key publications
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The impact of social media influencers on health outcomes: Systematic review
Journal article
Powell J. and Pring T., (2024), Social Science and Medicine, 340
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Adoption and Use of the NHS App in England: a mixed-methods evaluation
Journal article
Kc S. et al, (2023), The British journal of general practice : the journal of the Royal College of General Practitioners, 73
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Trust Me, I'm a Chatbot: How Artificial Intelligence in Health Care Fails the Turing Test
Journal article
Powell J., (2019), Journal of medical Internet research, 21
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Using online patient feedback to improve NHS services: the INQUIRE multimethod study
Journal article
Powell J. et al, (2019)
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What is an appropriate level of evidence for a digital health intervention?
Journal article
Greaves F. et al, (2018), The Lancet, 392, 2665 - 2667
Recent publications
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Qualitative evaluation of the implementation and national roll-out of the NHS App in England
Journal article
Reidy C. et al, (2025), BMC Medicine, 23
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Social Media use amongst parents and caregivers of children with rare genetic diseases: a scoping review (Preprint)
Preprint
Davis C. et al, (2025)
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How do parents use social media and the internet in the context of their child’s genetic neurodevelopmental disorder (GND)? A mixed methods analysis from the GenROC cohort study (Preprint)
Preprint
Low KJ. et al, (2025)
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The Digital Health Competencies in Medical Education Framework: An International Consensus Statement Based on a Delphi Study
Journal article
Car J. et al, (2025), JAMA network open, 8
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“In Their Own Words”: A Qualitative Exploration of Lived Experience and Healthcare Professional Perspectives on Evaluating a Digital Intervention for Binge Eating
Journal article
Murphy R. et al, (2025), International Journal of Eating Disorders