A photo of Dr. Peter Potts
Dr. Peter Potts, chief of staff

The chief of staff office provides a number of services to support and facilitate the relationship of Grand River Hospital (GRH) and St. Mary’s General Hospital (SMGH) to the professional staff (physicians, dentists and midwives). Our purpose is to work closely with medical leaders, hospital administrative leaders and medical schools to support recruitment, credentialing, career and leadership development planning, orientation and medical education.

Contact us:

835 King St. West, Kitchener, Ontario N2G 1G3
Phone: 519-749-4300 ext. 3892
Fax: 519-749-4293

Dr. Peter Potts, chief of staff
Grand River Hospital and St. Mary’s General Hospital

Heather Dowling, executive assistant
519-749-4300 ext. 2507, heather.dowling@grhosp.on.ca

Tanja Cvijetic, medical affairs coordinator, credentialing and recruitment
519-749-4300 ext. 3892, tanja.cvijetic@grhosp.on.ca

Leah Klassen, medical education coordinator
519-749-4300 ext. 2525, leah.klassen@grhosp.on.ca

Medical leaders at Grand River Hospital
  • Anesthesia: Dr. Valerie Spenler, common chief GRH/SMGH
  • Cardiovascular services: Dr. Brian McNamara, common chief GRH/SMGH
  • Critical care medicine: Dr. Mohammad Bahrgard Nikoo, common chief GRH/SMGH
  • Diagnostic imaging: Dr. Darren Knibutat, common chief GRH/SMGH
  • Emergency medicine: Dr. Robert Wickett, common chief GRH/SMGH
  • Hospitalist and family medicine: Dr. Brian Kelly, common chief GRH/SMGH
  • Internal medicine: Dr. William Plaxton, common chief GRH/SMGH
  • Laboratory medicine: Dr. Dimitrios Divaris, common chief GRH/SMGH
  • Nephrology: Dr. Gerald Rosenstein, chief GRH
  • Nuclear medicine: Dr. Richard Dubeau, chief SMGH
  • Oncology: Dr. Gregory Knight, chief GRH
  • Pediatrics: Dr. Bruno DiGravio, chief GRH
  • Psychiatry: Dr. John Heintzman, chief GRH
  • Pulmonary services: Dr. Eric Hentschel, common chief GRH/SMGH
  • Reproductive medicine: Dr. Stephen Halmo, chief GRH
  • Surgery: Dr. Bogdan Paun, common chief GRH/SMGH
Medical staff association

The medical staff association represents physicians on various hospital committees. Meetings provide an open platform for medical staff to ask questions and raise concerns to hospital administration and chief of staff. The association’s current president (GRH/SMGH) is Dr. Gagandeep Sarkaria, and the vice-president is Dr. Paul Chiasson.

Physician recruitment

All professional staff recruitment is based on an annual board-approved medical resource plan.

To inquire about physician vacancies at GRH/SMGH, please contact:

Tanja Cvijetic, medical affairs coordinator
519-749-4300ext. 3892
tanja.cvijetic@grhosp.on.ca

Current physician vacancies are posted on the Health Force Ontario Jobs website (opens in new window).