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Chief of staff office

The chief of staff office provides a number of services to support the relationship between Grand River and St. Mary’s General Hospital and the professional staff (physicians, dentists and midwives) resulting in effective use of resources, governance, credentialing, planning, monitoring and improvements to the quality of patient care.

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

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

Sonja Cvijetic, executive assistant
519-749-4300 ext. 2507, sonja.cvijetic@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

Department leadership
Below are the medical leaders at Grand River Hospital. To know more about us, please view our organizational structure.
Dr. Valerie Spenler, common chief GRH/SMGH

Cardiovascular services: Dr. Brian McNamara, common chief GRH/SMGH
Critical Care Medicine (SMGH/GRH): 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. Ian Wilson, interim chief GRH
Psychiatry: Dr. John Heintzman, chief GRH
Pulmonary Services: Dr. Eric Hentschel, common chief
Reproductive medicine: Dr. Peter Potts, chief GRH
Surgery: Dr. Peter Stevenson, 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. Bogdan Paun, and the vice-president is Dr. Gagandee Sarkaria.

Professional staff list
The professional staff information lists are updated twice annually, in November and May. The list includes office addresses, telephone numbers and fax numbers of all professional staff with privileges at GRH and SMGH.
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