People

Dr. Paul Nathan, MD, M.Sc., FRCPC

I was born in South Africa and immigrated to Canada as a teenager. I graduated from the University of Toronto’s medical school and then completed my residency in Paediatrics and a fellowship in Paediatric Haematology/Oncology at SickKids. I have always had a passion for clinical research, so I pursued further research training with a Masters degree from McMaster University, followed by a year at the National Cancer Institute in Bethesda, Maryland.

Today, I balance clinical care and patient research as a Clinician Investigator in the Division of Haematology/Oncology and Senior Associate Scientist in the Child Health Evaluative Sciences program at SickKids’ Research Institute. My clinical work takes place as Head of the Solid Tumor Oncology Team, as well as Director of the AfterCare Program, which cares for the hospital’s long-term cancer survivors. I am a Professor in the University of Toronto’s Institute for Health Policy, Management & Evaluation (IHPME) and Institute for Medical Science (IMS) as well as a Senior Adjunct Scientist in the Cancer Research Program at ICES.

The Hospital for Sick Children

Director, AfterCare Program
Head, Solid Tumor Section
Staff Oncologist, Haematology/Oncology
Senior Associate Scientist, Child Health Evaluative Sciences, SickKids Research Institute

Institute of Health Policy, Management and Evaluation, University of Toronto

Professor, Health Policy, Management & Evaluation

School of Graduate Studies, University of Toronto

Member, Institute of Medical Sciences

ICES

Senior Adjunct Scientist

Team

Emily Lam, MSc
Clinical Research Project Manager

Emily Lam is a Clinical Research Project Manager at the SickKids Research Institute and has been with Dr. Nathan’s team since 2016. She leads clinical research projects that evaluate long-term health outcomes in childhood cancer survivors and risk factors associated with these outcomes. Emily manages the evaluation of a new provincial surveillance and reminder program (ONLOOP) and Preventing Cardiac Sequelae in Pediatric Cancer Survivors (PCS²) study activities and teams.

In this role, she works collaboratively with health system partners at Ontario Health, The Pediatric Oncology Group of Ontario, Children’s Oncology Group, Princess Margaret Cancer Centre, and Toronto General Hospital.

Prior to joining SickKids, Emily served as a Research Officer/ Trial Coordinator at the University of Toronto and Women’s College Hospital. Emily holds an M.Sc. in Neuroscience from the University of Toronto.

Emily Lam, M.Sc.

Emily Lam, MSc
Clinical Research Project Manager

Clinical Research Project Manager

Mohammed Mamun, MBBS, PhD
Clinical Research Project Assistant

Mohammed Mamun is a Clinical Research Project Assistant, and has been working with the team on the PCS² (Preventing Cardiac Sequelae in Pediatric Cancer Survivors) project since 2018. Prior to joining Dr. Nathan’s team at SickKids, Mohammed worked with Dr. Nathan for a number of years at ICES.

Mohammed holds an MBBS and a PhD in Surgical Sciences, and he has previously worked on an invention and jointly patented (accepted and licensed at the University of Tokyo, Japan) a method of prediction that identifies patients with prostate cancer who are at risk for adverse side effects of a chemotherapy drug.

Mohammed Mamun, MBBS, PhD

Mohammed Mamun, MBBS, PhD
Clinical Research Project Assistant

Clinical Research Project Assistant

Maria Locke, BA (Hons)
Clinical Research Project Assistant

Maria Locke is a Clinical Research Project Assistant supporting our study evaluating bone health in survivors of pediatric ALL using high-resolution (HR-pQCT). She is also part of the Preventing Cardiac Sequelae in Pediatric Cancer Survivors (PCS²) project team.

Prior to joining Dr. Nathan’s research team in 2022, Maria was an Administrative Assistant in the Haematology/Oncology Department at SickKids and a Legal Administrative Assistant with the Ministry of the Attorney General. She holds an Honours Bachelor of Arts in Criminal Justice and Public Policy from the University of Guelph.

Maria Locke, BA (Hons)

Maria Locke, BA (Hons)
Clinical Research Project Assistant

Clinical Research Project Assistant

Alexandra Moskalewicz, M.Sc.
Research Analyst

Alexandra Moskalewicz is a Research Analyst supporting pediatric oncology health services research-related projects. Prior to joining SickKids, Alex completed a Master of Science in Health Services Research at the University of Toronto and was supervised by Dr. Paul Nathan, Dr. Sumit Gupta and Dr. Petros Pechlivanoglou. For her Master’s thesis, she used microsimulation modeling to project the prevalence of childhood cancer in Ontario across future decades. Prior to her M.Sc., she completed a Bachelor of Science in Health Studies at the University of Waterloo.

Alexandra Moskalewicz, M.Sc.

Alexandra Moskalewicz, M.Sc.
Research Analyst

Alexandra Moskalewicz is a Research Analyst supporting pediatric oncology health services research-related projects. Prior to joining SickKids, Alex completed a Master of Science in Health Services Research at the University of Toronto, and was supervised by Dr. Paul Nathan, Dr. Sumit Gupta and Dr. Petros Pechlivanoglou. For her Master’s thesis, she used microsimulation modeling to project the prevalence of childhood cancer in Ontario across future decades. Prior to her M.Sc., she completed a Bachelor of Science in Health Studies at the University of Waterloo.

Research Analyst

Current Trainees

Grace Tang

Grace Tang is completing her PhD in Health Services Research at the Institute of Health Policy, Management and Evaluation, University of Toronto, co-supervised by Dr. Paul Nathan and Dr. Rinku Sutradhar. She completed her BSc in Health Studies at the University of Waterloo in 2015, and her MSc in Health Research Methodology at McMaster University in 2017. Her PhD thesis project surrounds healthcare utilization among childhood and adolescent cancer survivors in Ontario.

Rand Ajaj

Rand Ajaj is a Master of Science candidate at the Institute of Medical Science, University of Toronto. Rand’s master’s thesis, supervised by Dr. Nathan, is focused on evaluating the outcomes of adolescents with testicular germ cell tumors. Rand completed her Honours Bachelor of Science degree in physiology and health & disease at the University of Toronto-St. George in June 2021.

Past Trainees

Alex Moskalewicz

Alex Moskalewicz completed a Master of Science degree in Health Services Research at the University of Toronto, co-supervised by Dr. Paul Nathan and Dr. Sumit Gupta. She previously graduated from the Bachelor of Science in Health Studies program at the University of Waterloo in 2019. Her M.Sc. thesis project was about predicting the prevalence of childhood cancer survivors in Ontario across future decades using microsimulation modeling.

Alex Nachman

Alex Nachman completed a Master of Science degree at the Institute of Medical Sciences at the University of Toronto, supervised by Dr. Paul Nathan. Alex’s Master’s thesis focused on using healthcare administrative data to investigate mental health outcomes in survivors of pediatric cancer. Alex also holds a Bachelor’s in Microbiology and Immunology at McGill University, and is currently an Internal Medicine Resident at Dalhousie University.

Alina Zgardau

Coming soon

Ashna Khanna

Ashna Khanna is currently pursuing a Doctor of Osteopathic Medicine degree at Western University of Health Sciences College of Osteopathic Medicine. Prior to this, she obtained her M.Sc. at the Institute of Medical Sciences at the University of Toronto, and her B.Sc. at the University of Toronto Mississauga.

Ashna worked on the PCS2 project with Paul during her undergraduate and graduate studies. Ashna’s research focus for her Master’s was on the cardiac outcomes in childhood cancer survivors.

Dalia Kagramanov

Dalia Kagramoanov

Dalia Kagramoanov graduated with a Master of Science degree from The Institute of Medical Sciences, University of Toronto, and was supervised by Dr. Paul Nathan. Dalia’s thesis was titled, “Assessing the Impact of the Model of Long-term Follow-up Care on Adherence to Guideline-Recommended Surveillance Among Survivors of Adolescent and Young Adult Cancers”. Dalia is pursuing her PhD at the Keck School of Medicine at The University of Southern California.

Meera Rayer

Meera Rayer completed her medical training and pediatric residency at McMaster University and her Pediatric Hematology/Oncology Fellowship at The Hospital for Sick Children. She is currently a Clinical Assistant Professor within the Division of Hematology, Oncology & BMT at BC Children’s Hospital and the Department of Pediatrics at the University of British Columbia. Meera completed her Master’s degree at IHPME at the University of Toronto, for which Dr. Nathan served as her supervisor. Her thesis work focused on treatment patterns for adolescents with cancer in Ontario. Dr. Nathan continues to serve as Meera’s clinical and research mentor.

Reza Mortazavi

Reza Mortazavi received his M.Sc. from the University of Toronto’s Institute for Medical Sciences and was supervised by Dr. Paul Nathan. Reza’s thesis compared the epidemiology, disease characteristics, treatment, outcomes, and late effects of osteosarcoma and Ewing sarcoma in adolescents and young adults treated at pediatric versus adult cancer centres in Ontario. Reza is an international medical graduate (MD) with years of experience as a dermatologist in the Middle East. Reza previously worked at Hamilton Health Sciences for 3 years as a Clinical Research Coordinator for a multicenter study.