Patricia Mary "Trisha" Greenhalgh OBE MA MD FRCP FRCGP FMedSci (born 11 March 1959) is a British professor of primary health care and a practicing general practitioner.
Early life and education
Greenhalgh gained a BA in Social and Political Sciences from the University of Cambridge in 1980. She then qualified in Medicine from the University of Oxford in 1983.
In April 2010, Greenhalgh was appointed Professor of Primary Health Care and Dean for Research Impact at Queen Mary University of London. Her role included setting up and leading the Healthcare Innovation and Policy Unit in the Centre for Health Sciences at Barts and the London School of Medicine and Dentistry.
In January 2015, Trish Greenhalgh took up the post of Professor of Primary Care Health Sciences and Fellow of Green Templeton College at the University of Oxford.
She is a Senior Investigator at the National Institute for Health Research 
She is the author of more than 220 peer-reviewed publications and 8 textbooks.
One of her books "How to read a paper" is now in its fifth edition.
Honours and awards
She has twice won the Royal College of General Practitioners Research Paper of the Year Award.
She accepted an OBE in 2001 for services to evidence based medical care.
In 2006, she was one of the authors who received the Baxter Award from the European Health Management Association.
She was elected to become a Fellow of the Academy of Medical Sciences in 2014.