Contact Information

General Inquiries and Information:

Woodstock Site St. Thomas Site

Phone: 519-421-9901

Toll Free: 1-800-922-0096


410 Buller Street, Woodstock, Ontario, N4S 6G9

Phone: 519-631-9900

Toll Free: 1-800-922-0096


1230 Talbot Street, St. Thomas, Ontario, N5P 1G9

Executive Leadership & Support:

Name Position Focus Area Contact Information
Cynthia St. John Chief Executive Officer (CEO)   519-631-9900 Ext. 1202
Dr. Joyce Lock Medical Officer of Health (MOH)   519-631-9900 Ext. 1308
Tiffany Terpstra Executive Assistant Support to CEO, MOH and Board of Health 519-631-9900 Ext. 1308

Senior Leadership Team, Corporate Services & Support:

Name Position Focus Area Contact Information
Cathie Walker Director Foundational Standards, Chief Nursing Officer 519-631-9900 Ext. 1223
David Smith Director School Health, Oral Health, Vision Screening, School-based Immunization, School-based Clinical Services, School Nutrition Program 519-631-9900 Ext. 1245
Derek McDonald Director Corporate Services & Human Resources 519-631-9900 Ext. 1250
Monica Nusink Director Chief Finance Officer (CFO) 519-631-9900 Ext. 1318
Peter Heywood Director Chronic Disease Prevention & Well-Being, Food Safety, Healthy Environments, Substance Use & Injury Prevention, Safe Water 519-421-9901 Ext. 3502
Susan MacIsaac Director Healthy Growth & Development, Infectious and Communicable Diseases, Immunization 519-421-9901 Ext. 3444
Amanda Koning Administrative Assistant   519-631-9900 Ext. 1207
Janice Terpstra Payroll & Benefits Administrator   519-631-9900 Ext. 1254
Jodi Brindley Supervisor, Accounting   519-631-9900 Ext.1335
Karen Vance Administrative Assistant Support to Directors (Peter Heywood & Susan MacIssac) 519-421-9901 Ext. 3401
Kim Eitel Executive Assistant Support to Directors (Monica Nusink & Derek McDonald) 519-631-9900 Ext. 1203
Megan Cornwell Manager  Communications 519-631-9900 Ext. 1259
Nicole Dagg Manager  Human Resources 519-631-9900 Ext. 1243
Sherrie Abrantes Administrative Assistant Support to Directors (David Smith & Cathie Walker) 519-631-9900 Ext.1316
Vanda Ostojic-Middel Office Manager   519-631-9900 Ext. 1244