Ron Wald

MDCM, MPH

Scientist

Biography

Ron Wald is a nephrologist at St. Michael’s Hospital and Director of the hospital’s Hemodialysis Program. He is a Professor of Medicine at the University of Toronto. A native of Montreal, he completed his undergraduate and medical degrees at McGill University and continued his clinical training in internal medicine and nephrology at the University of Toronto. Following this, he completed his Master of Public Health at Harvard University and a research fellowship at Tufts Medical Center in Boston. Dr. Wald’s research areas are critical care nephrology and maintenance dialysis. He was co-principal investigator of the STARRT-AKI trial, a Canadian Institutes of Health Research-funded international trial on the timing of dialysis initiation in critically ill patients with acute kidney injury. He is also interested in fluid management in the setting of acute kidney injury and the long-term outcomes of patients who survive an episode of acute kidney injury. In the realm of maintenance dialysis, he is on the leadership team of the multinational PHOSPHATE trial that is evaluating whether intensive lowering of serum phosphate reduces the risk of major adverse cardiovascular events.

Please note: Dr. Wald is not taking any summer students.

Recent Publications

  1. Cohen-Hagai, K, Saban, M, Antebi, A, Benchetrit, S, Nacasch, N, Erez, D et al.. Ethnicity, Patient Satisfaction and Clinical Outcomes among Israeli Dialysis Recipients. Kidney360. 2025; :. doi: 10.34067/KID.0000000729. PubMed PMID:39928423 .
  2. Khoo, B, Friedrich, JO, Lebovic, G, Hiremath, S, Fishman, G, Wing, S et al.. Kidney recovery after iodinated contrast administration in patients with acute kidney injury receiving renal replacement therapy. J Crit Care. 2025;87 :155015. doi: 10.1016/j.jcrc.2025.155015. PubMed PMID:39889644 .
  3. Mayourian, J, O'Leary, ET, Triedman, JK, Wald, RM, Valente, AM, Geva, T et al.. Artificial Intelligence-Enabled Electrocardiogram Predicts Sudden Cardiac Death in Repaired Tetralogy of Fallot. JACC Clin Electrophysiol. 2025; :. doi: 10.1016/j.jacep.2024.10.031. PubMed PMID:39808087 .
  4. Katz, NT, Wald, R, Kantor, GS, Sim, F, Greenland, P. A case series on trauma care in Gaza: reflections. Lancet. 2025;405 (10474):198. doi: 10.1016/S0140-6736(24)02806-X. PubMed PMID:39788136 .
  5. Odler, B, Riedl, R, Geetha, D, Szpirt, WM, Hawley, C, Uchida, L et al.. The effects of plasma exchange and glucocorticoids on early kidney function among patients with ANCA-associated vasculitis in the PEXIVAS trial. Kidney Int. 2024; :. doi: 10.1016/j.kint.2024.11.029. PubMed PMID:39708998 .
  6. Reynolds, HR, Page, CB, Shaw, LJ, Berman, DS, Chaitman, BR, Picard, MH et al.. Relationship Between Severity of Ischemia and Coronary Artery Disease for Different Stress Test Modalities in the ISCHEMIA Trial. Circ Cardiovasc Interv. 2024;17 (12):e013743. doi: 10.1161/CIRCINTERVENTIONS.123.013743. PubMed PMID:39689188 PubMed Central PMC11658795.
  7. Wing, S, Neto, AS, Bellomo, R, Clark, EG, Gallagher, M, Liangos, O et al.. CKD Progression following Acute Kidney Injury: A Secondary Analysis of the STARRT-AKI Trial. Kidney360. 2024; :. doi: 10.34067/KID.0000000663. PubMed PMID:39625781 .
  8. Nasa, P, Wise, RD, Smit, M, Acosta, S, D'Amours, S, Beaubien-Souligny, W et al.. International cross-sectional survey on current and updated definitions of intra-abdominal hypertension and abdominal compartment syndrome. World J Emerg Surg. 2024;19 (1):39. doi: 10.1186/s13017-024-00564-5. PubMed PMID:39609850 PubMed Central PMC11605967.
  9. Drucker Iarovich, M, Matos, JF, Lowes, WH, de Silva, N, Moayedi, Y, Thavendiranathan, P et al.. Cardiac MRI Pectoralis Muscle Thickness as a Measure of Sarcopenia: Prognostic Significance, Interreader Agreement, and Physiologic Correlation. Radiol Cardiothorac Imaging. 2024;6 (6):e240147. doi: 10.1148/ryct.240147. PubMed PMID:39570108 .
  10. Geva, T, Wald, RM, Bucholz, E, Cnota, JF, McElhinney, DB, Mercer-Rosa, LM et al.. Long-Term Management of Right Ventricular Outflow Tract Dysfunction in Repaired Tetralogy of Fallot: A Scientific Statement From the American Heart Association. Circulation. 2024;150 (25):e689-e707. doi: 10.1161/CIR.0000000000001291. PubMed PMID:39569497 .
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Affiliations & Other Activities

  • Director, Hemodialysis, Division of Nephrology, Department of Medicine, St. Michael’s Hospital
  • Professor, Department of Medicine and Health Policy Management and Evaluation, University of Toronto
  • Adjunct Scientist, Institute for Clinical Evaluative Sciences