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. Harel, Z, McArthur, E, Hladunewich, M, Dirk, JS, Wald, R, Garg, AX et al.. Serum Creatinine Levels Before, During, and After Pregnancy. JAMA. 2019;321 (2):205-207. doi: 10.1001/jama.2018.17948. PubMed PMID:30644975 .
  2. Silver, SA, Alaryni, A, Alghamdi, A, Digby, G, Wald, R, Iliescu, E et al.. Routine Laboratory Testing Every 4 Versus Every 6 Weeks for Patients on Maintenance Hemodialysis: A Quality Improvement Project. Am. J. Kidney Dis. 2018; :. doi: 10.1053/j.ajkd.2018.10.008. PubMed PMID:30598347 .
  3. Gong, IY, Al-Amro, B, Prasad, GVR, Connelly, PW, Wald, RM, Wald, R et al.. Cardiovascular magnetic resonance left ventricular strain in end-stage renal disease patients after kidney transplantation. J Cardiovasc Magn Reson. 2018;20 (1):83. doi: 10.1186/s12968-018-0504-5. PubMed PMID:30554567 PubMed Central PMC6296102.
  4. Prasad, GVR, Yan, AT, Nash, MM, Kim, SJ, Wald, R, Wald, R et al.. Determinants of Left Ventricular Characteristics Assessed by Cardiac Magnetic Resonance Imaging and Cardiovascular Biomarkers Related to Kidney Transplantation. Can J Kidney Health Dis. 2018;5 :2054358118809974. doi: 10.1177/2054358118809974. PubMed PMID:30542623 PubMed Central PMC6236646.
  5. Yau, K, Burneo, JG, Jandoc, R, McArthur, E, Muanda, FT, Parikh, CR et al.. Population-Based Study of Risk of AKI with Levetiracetam. Clin J Am Soc Nephrol. 2019;14 (1):17-26. doi: 10.2215/CJN.07490618. PubMed PMID:30538089 .
  6. Yamamura, K, Yuen, D, Hickey, EJ, He, X, Chaturvedi, RR, Friedberg, MK et al.. Right ventricular fibrosis is associated with cardiac remodelling after pulmonary valve replacement. Heart. 2018; :. doi: 10.1136/heartjnl-2018-313961. PubMed PMID:30514732 .
  7. Wald, R, Thorpe, KE, Walsh, MW. Leveraging pragmatic clinical trial design to advance phosphate management in end-stage renal disease. Curr. Opin. Nephrol. Hypertens. 2019;28 (1):34-39. doi: 10.1097/MNH.0000000000000460. PubMed PMID:30480640 .
  8. Kitchlu, A, McArthur, E, Amir, E, Booth, CM, Sutradhar, R, Majeed, H et al.. Acute Kidney Injury in Patients Receiving Systemic Treatment for Cancer: A Population-Based Cohort Study. J. Natl. Cancer Inst. 2018; :. doi: 10.1093/jnci/djy167. PubMed PMID:30423160 .
  9. Garg, AX, Devereaux, PJ, Hill, A, Sood, M, Aggarwal, B, Dubois, L et al.. Oral curcumin in elective abdominal aortic aneurysm repair: a multicentre randomized controlled trial. CMAJ. 2018;190 (43):E1273-E1280. doi: 10.1503/cmaj.180510. PubMed PMID:30373740 PubMed Central PMC6205831.
  10. 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 .
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Affiliations & Other Activities

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