Gastroenterologist at @HamHealthSci, Division Director at @McMasterU , Past Editor-in-Chief of #JCAG, Professor in @MacDeptMed, Full Member of @FarncombeInstit

McMaster University
Joined January 2014
John K. Marshall MD retweeted
Don’t miss @pakotze and I talk all things #IBD and surgery. Tomorrow! And get CME credits!
Join us for next session of SCOPE Rounds Gastroenterology 2026! 📌 Surgical management of IBD: What gastroenterologists should know 👨‍⚕️ Dr. Paulo Kotze 🗓️ September 29 at 7:00 PM ET 👉 Register now: us02web.zoom.us/webinar/regi…
2
5
905
John K. Marshall MD retweeted
Join us for our first fall session of SCOPE Rounds Gastroenterology 2026! 📌 Primary Biliary Cholangitis: Update on diagnosis and management 🗓️ September 15 at 7:00 PM ET 👨‍⚕️ Dr. Gideon Hirschfield 👉 Register now: us02web.zoom.us/webinar/regi…
3
5
457
John K. Marshall MD retweeted
Join Canadian community and academic gastroenterologists on Sept 18-19 in Niagara Falls for an interactive, case-based forum exploring emerging evidence, real-world challenges, and practical approaches to inflammatory bowel disease management across Canada. Learn more & register: buff.ly/HR4nnS1
3
5
374
I am delighted to have been elected to the University Council of @queensu Queen's University, my alma mater! Excited to represent our amazing network of alumni and participate in the governance of this unique institution!
2
6
687
The Division of Gastroenterology marks the academic retirement of Dr. Stephen Collins following a remarkable 45-year career at @McMasterU. From founding the Intestinal Diseases Research Institute and navigating its evolution to the @Farncombe_GI Farncombe Family Digestive Health Research Institute, supporting innovation at McMaster University Faculty of Health Sciences as Assistant Dean of Research, teaching and mentoring hundreds of trainees, and providing compassionate bedside care as a highly astute clinician, Dr. Collins has left indelible marks on our institution. Thank you! @CanGastroAssn @ontario_gastros @MacDeptMed
1
1
12
848
The @McMasterU Division of Gastroenterology bids a fond farewell to Dr. Smita Halder after 16 years of innovation, leadership and compassionate care for all of our patients with gastrointestinal disorders. Wishing her all the best as she takes on a new leadership role at Toronto Metropolitan University school of medicine! @Farncombe_GI @CanGastroAssn @ontario_gastros
4
14
1,238
John K. Marshall MD retweeted
Join us for the next session of SCOPE Rounds Gastroenterology 2026! 📌My approach to sessile serrated lesions 👨‍⚕️Dr. Eric Lam 🗓️ May 12 from 7:00 - 7:45 PM ET 👉Register now: us02web.zoom.us/webinar/regi…
3
5
331
John K. Marshall MD retweeted
Join us for the next session of SCOPE Rounds Gastroenterology 2026! 📌How I sequence therapy in IBD 👨‍⚕️Dr. Bruce Sands 🗓️April 28 from 7:00 - 7:45 PM ET 👉Register now: us02web.zoom.us/webinar/regi…
6
2
11
2,268
John K. Marshall MD retweeted
Don’t miss the next session of SCOPE Rounds Gastroenterology 2026! 📌 Celiac disease: How to find and fix 👩‍⚕️Dr. Jocelyn Silvester 🗓️April 14 from 7:00 - 7:45 PM ET 👉Register now: us02web.zoom.us/webinar/regi…
3
3
518
John K. Marshall MD retweeted
✨Now Accredited!✨ *Don’t miss the FIRST SCOPE Rounds Gastroenterology 2026 Session on “Endoscopic closure: When and how?” with Dr. Jeff Mosko! 📅 Tomorrow, Tuesday, March 10 at 7:00 PM ET 👉Register now: us02web.zoom.us/webinar/regi…
4
4
577
Congratulations to David Armstrong on well deserved recognition with the @CanGastroAssn Clinical Achievement Award. This is a huge honour and McMaster GI is proud. Presented by Frances Tse - incoming @CanGastroAssn President Elect!@McMasterU
1
1
8
489
Congratulations to @PaulMoayyedi for completing his term on the @CanGastroAssn Board, wrapping up two years as Past President. McMaster GI is proud to see its members contribute to the national GI community. The novel misspelling of his name was graciously acknowledged! @McMasterU
1
10
716
John K. Marshall MD retweeted
The MC IBD full-day program returns on April 11, 2026, with expert-led seminars and interactive workshops on managing IBD and IMIDs throughout the pregnancy journey. A multidisciplinary event designed for clinicians across specialties. Learn more and register: buff.ly/YHxImCl
1
2
238
LIVE WEBINAR: IBD NOW & NEXT - Current & Emerging Treatments Date: December 2 Time: 8:00–9:15 PM EDT Join us for a fast-paced, expert-led session exploring the rapidly evolving treatment landscape in Inflammatory Bowel Disease (IBD), with a special focus on Ulcerative Colitis. This is a great opportunity for clinicians, researchers, and anyone involved in IBD management to stay ahead of the curve. This webinar brings together leading clinicians who will break down where we are today, what’s coming next, and how new evidence can be translated into meaningful, patient-centred care. Learning Objectives: - Map the current therapeutic landscape in Ulcerative Colitis and how it’s used in day-to-day practice - Review data from emerging mechanisms of action and how they could fit within Canadian care - Translate clinical trials and real-world evidence into patient-centred decisions through practical case discussions @ScopeCanMD
3
12
826
Heartfelt congratulations to @guthealthmd Mark Silverberg as winner of the 2025 Richard N. Fedorak Award for lifetime contributions to teaching and mentorship in IBD. Richly deserved! @getgutsycanada @UofT
4
3
1
44
2,812
Congratulations to Neeraj Narula on being recognized with the 2025 Distinguished Service Award from the Canadian IBD Research Consortium! @McMasterU @machealthsci @getgutsycanada!!!
2
19
803
Great start to Mentoring in IBD 2025! How does diet affect IBD and can a change I diet help? #ibdminds2025 @getgutsycanada
4
25
1,205