John K. Marshall
Expertise in
14
conditions

John K. Marshall

Hamilton, ON, CA 
Expertise in
14
conditions
Hamilton, ON, CA 

Overview

John Marshall practices in Hamilton, Canada. Mr. Marshall is highly rated in 14 conditions, according to our data. His top areas of expertise are Viral Gastroenteritis, Crohn's Disease, Ulcerative Colitis, Colonoscopy, and Endoscopy.

His clinical research consists of co-authoring 193 peer reviewed articles and participating in 6 clinical trials. MediFind looks at clinical research from the past 15 years.

Gender

Male

Locations

Hamilton, ON, Canada
Other Locations
ON, Canada
St. Michael's Hospital, Toronto, ON, Canada
Kelowna, BC V1V1V7, Canada
Guelph, ON N1G2W1, Canada

Clinical Research

Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Experts who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.

6 Clinical Trials

Re-EValuating the Inhibition of Stress Erosions: Prophylaxis Against Gastrointestinal Bleeding in the Critically Ill (The REVISE) Trial
Re-EValuating the Inhibition of Stress Erosions: Prophylaxis Against Gastrointestinal Bleeding in the Critically Ill (The REVISE) Trial
Enrollment Status: Completed
Publish Date: September 20, 2024
Intervention Type: Drug
Study Drug: Pantoprazole
Study Phase: Phase 3
Advanced Mesenchymal Enhanced Cell THerapY for SepTic Patients
Advanced Mesenchymal Enhanced Cell THerapY for SepTic Patients
Enrollment Status: Terminated
Publish Date: April 16, 2024
Intervention Type: Biological
Study Drug: GEM00220
Study Phase: Phase 1
Heparin AnticoaguLation to Improve Outcomes in Septic Shock: The HALO International Phase II RCT
Heparin AnticoaguLation to Improve Outcomes in Septic Shock: The HALO International Phase II RCT
Enrollment Status: Terminated
Publish Date: May 24, 2022
Intervention Type: Other, Drug
Study Drug: Unfractionated heparin
Study Phase: Phase 2
A Phase 2, Multi-center, Randomized, Double-Blind, Placebo-Controlled Study of QBECO SSI for the Induction and Maintenance of Clinical and Endoscopic Remission in Subjects With Moderate to Severe Crohn's Disease
A Phase 2, Multi-center, Randomized, Double-Blind, Placebo-Controlled Study of QBECO SSI for the Induction and Maintenance of Clinical and Endoscopic Remission in Subjects With Moderate to Severe Crohn's Disease
Enrollment Status: Terminated
Publish Date: May 18, 2021
Intervention Type: Biological, Other
Study Drug: QBECO Site-Specific Immunomodulators
Study Phase: Phase 2
Randomized Trial of Antimicrobials Versus Placebo in Addition to Fecal Microbiota Therapy in for the Induction of Remission in Active Ulcerative Colitis
Randomized Trial of Antimicrobials Versus Placebo in Addition to Fecal Microbiota Therapy in for the Induction of Remission in Active Ulcerative Colitis
Enrollment Status: Completed
Publish Date: February 10, 2021
Intervention Type: Drug
Study Phase: Phase 2
Probiotics to Prevent Severe Pneumonia and Endotracheal Colonization Trial (PROSPECT)
Probiotics to Prevent Severe Pneumonia and Endotracheal Colonization Trial (PROSPECT)
Enrollment Status: Completed
Publish Date: December 17, 2020
Intervention Type: Drug
Study Phase: Phase 4
View 5 Less Clinical Trials

192 Total Publications

Addition of Baseline Histology and Fecal Calprotectin Does Not Reduce Placebo Rates in Ulcerative Colitis Clinical Trials: Post-hoc Analysis of Patient Level Data.
Addition of Baseline Histology and Fecal Calprotectin Does Not Reduce Placebo Rates in Ulcerative Colitis Clinical Trials: Post-hoc Analysis of Patient Level Data.
Journal: Journal of Crohn's & colitis
Published: November 09, 2025

Frequently Asked Questions about John K. Marshall

Is John K. Marshall a top-rated expert for Viral Gastroenteritis?

MediFind is an objective health platform that identifies experts based on real-world data. John K. Marshall is classified as an Elite expert for Viral Gastroenteritis, meaning they are among the top experts in the country for this condition. This ranking is based on their volume of patients, published research, and peer connections.

Does John K. Marshall participate in research or clinical trials?

Yes. John K. Marshall has published 192 articles and abstracts on conditions like Viral Gastroenteritis. You can view a list of John K. Marshall's latest peer-reviewed publications and clinical trial participation on their profile to see if they are active in new treatments.

Areas of Expertise

MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.

Learn more about MediFind’s expert tiers

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