Ron Wald


Scientist, Li Ka Shing Knowledge Institute

Tel: 416-867-3703
Twitter: @DrRonWald


Ron Wald is a nephrologist and Associate 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 a Master in Public Health at Harvard University and a research fellowship at Tufts Medical Center in Boston. Since joining the St. Michael’s Hospital Division of Nephrology in 2006, Dr. Wald has been responsible for the hospital’s acute dialysis program. In addition to attending on the hospital’s Nephrology consult and ward services, he provides longitudinal care for patients on chronic hemodialysis and has an active general nephrology practice.

Dr. Wald’s research interests are in the areas of critical care nephrology and chronic dialysis. He is currently leading a Canadian Institutes of Health Research-funded international trial on the impact of the timing of dialysis initiation on survival in critically ill patients with acute kidney injury. He also has a strong interest in the long-term outcomes of patients who survive an episode of acute kidney injury and is co-leading a trial that is comparing specialized nephrology care vs usual care in this population. In the chronic dialysis area, Dr. Wald co-led a CIHR-funded study on the cardiovascular benefits of incentre nocturnal hemodialysis. He recently completed a multicentre pilot trial examining the implementation of two different levels of serum phosphate control in the hemodialysis population. A larger definitive trial to evaluate whether intensive serum phosphate lowering mediates improved clinical outcomes is planned. As a founding member of the Kidney Dialysis and Transplantation Program of the Institute for Clinical Evaluative Sciences, Dr. Wald is also involved in several studies that are using province-wide administrative data to answer research questions in kidney disease.

Please note: Dr. Wald is not taking any summer students in 2018.

Recent Publications

  1. Chimunda, T, Silver, SA, Kuwornu, JP, Li, L, Nash, DM, Dixon, SN et al.. Hospital case volume and clinical outcomes in critically ill patients with acute kidney injury treated with dialysis. J Crit Care. 2018;48 :276-282. doi: 10.1016/j.jcrc.2018.08.024. PubMed PMID:30248649 .
  2. Reuter, MS, Jobling, R, Chaturvedi, RR, Manshaei, R, Costain, G, Heung, T et al.. Haploinsufficiency of vascular endothelial growth factor related signaling genes is associated with tetralogy of Fallot. Genet. Med. 2018; :. doi: 10.1038/s41436-018-0260-9. PubMed PMID:30232381 .
  3. Law, TK, Wald, R, Goldstein, M, Karur, GR, Ng, MY, Wang, AYM et al.. Left Atrial Remodeling Assessed by Cardiac MRI after Conversion from Conventional Hemodialysis to In-Centre Nocturnal Hemodialysis. J. Nephrol. 2018; :. doi: 10.1007/s40620-018-0522-2. PubMed PMID:30168083 .
  4. Geva, T, Mulder, B, Gauvreau, K, Babu-Narayan, SV, Wald, R, Hickey, K et al.. Preoperative Predictors of Death and Sustained Ventricular Tachycardia After Pulmonary Valve Replacement in Patients with Repaired Tetralogy of Fallot Enrolled in the INDICATOR Cohort. Circulation. 2018; :. doi: 10.1161/CIRCULATIONAHA.118.034740. PubMed PMID:30030416 .
  5. Kitchlu, A, Shapiro, J, Amir, E, Garg, AX, Kim, SJ, Wald, R et al.. Representation of Patients With Chronic Kidney Disease in Trials of Cancer Therapy. JAMA. 2018;319 (23):2437-2439. doi: 10.1001/jama.2018.7260. PubMed PMID:29922818 .
  6. Silver, SA, Saragosa, M, Adhikari, NK, Bell, CM, Harel, Z, Harvey, A et al.. What insights do patients and caregivers have on acute kidney injury and posthospitalisation care? A single-centre qualitative study from Toronto, Canada. BMJ Open. 2018;8 (6):e021418. doi: 10.1136/bmjopen-2017-021418. PubMed PMID:29909373 PubMed Central PMC6009618.
  7. Silversides, CK, Grewal, J, Mason, J, Sermer, M, Kiess, M, Rychel, V et al.. Pregnancy Outcomes in Women With Heart Disease: The CARPREG II Study. J. Am. Coll. Cardiol. 2018;71 (21):2419-2430. doi: 10.1016/j.jacc.2018.02.076. PubMed PMID:29793631 .
  8. Ong, JP, Wald, R, Goldstein, MB, Leipsic, J, Kiaii, M, Deva, DP et al.. Left Ventricular Strain Analysis Using Cardiac MRI in Patients Undergoing In-centre Nocturnal Hemodialysis. Nephrology (Carlton). 2018; :. doi: 10.1111/nep.13404. PubMed PMID:29785733 .
  9. Perl, J, McArthur, E, Tan, VS, Nash, DM, Garg, AX, Harel, Z et al.. ESRD among Immigrants to Ontario, Canada: A Population-Based Study. J. Am. Soc. Nephrol. 2018;29 (7):1948-1959. doi: 10.1681/ASN.2017101055. PubMed PMID:29720548 PubMed Central PMC6050933.
  10. Meier, LM, Van De Bruaene, A, Charla, P, Wald, RM, Oechslin, E. Transmural circumflex infarction in a young Fontan patient: to leave home to find it. Eur Heart J Cardiovasc Imaging. 2018;19 (8):953-954. doi: 10.1093/ehjci/jey054. PubMed PMID:29635532 .
Search PubMed

Affiliations & Other Activities

  • Nephrologist, Department of Medicine, St. Michael’s Hospital
  • Associate Professor, Department of Medicine, University of Toronto