Management Team

If you have a question or concern that needs an immediate response, please call 1-800-265-7293.

Senior Management



Dr. N. J. Mercer

Medical Officer of Health, CEO


Dr. Matthew Tenenbaum

Associate Medical Officer of Health

Guelph Office               


David Kingma

Vice President, Human Resources and Corporate Services

Guelph Office


Dr. Kyle Wilson

Vice President, Information Systems and Digital Innovation

Chief Information Officer/Chief Privacy Officer

Guelph Office


Rita Isley

Vice President, Community Health

Chief Nursing Officer

Guelph Office


Christopher Beveridge

Vice President, Health Protection and Emergency Preparedness

Guelph Office


Directors and Program Managers

Community Health


Program Areas

Meghan Wiles

Acting Manager, Dental

  • Oral Health Assessment & Surveillance

  • Ontario Seniors Dental Care Program

  • Healthy Smiles Ontario

Camille Loucks 

Manager, Clinical Services

  • Sexual Health

    • Diagnosis and Treatment

    • Case Management

    • Education

  • Reproductive Health

  • Tuberculosis Prevention and Management

  • Harm Reduction Program and Naloxone

    • Education

    • Supply Distribution

Mary Anne Kozdras

Manager, HBHC

  • Healthy Babies, Healthy Children

    • Healthy Pregnancies

    • Parenting

    • Early Childhood

Karen Mulvey

Manager, Vaccine Preventable Diseases

  • Immunization for Children in Schools & Licensed Child Care

  • Vaccine Administration

  • Adverse Events Following Immunizations

  • Vaccine Administration - Schools

  • Vaccine Management

  • Community Based Immunization Outreach

  • Barriers to Immunization Project

Lisa Hebden

Operations Director, Client Services

  • Reception and PHN Response Team

  • Intake for all programs

  • Appointment bookings for all programs

  • Parenting Support

  • Breastfeeding and Infant Feeding Support

  • Growth and Development

  • Vision Program

  • Community Partner Outreach 

Health Protection


Program Areas

Lillianna Marinko 

Manager, Infectious Diseases

  • Infectious Diseases Prevention 

Shelby Leenders

Manager, Infection Control 

  • Infection Control

  • IPAC Hub

  • PSS Inspections 

Phil Wong

Operations Director, Health Protection

  • Safe Water

  • Health Hazard Prevention and Management

  • Smoke-Free Ontario

  • Health Hazard Prevention & Management

  • Vector Borne Diseases Prevention

  • Small Drinking Water Systems

Paul Medeiros

Manager, Environmental Health

  • Food Safety including:

    • ​General food safety and foodbourne illness

    • Special events and farmers markets

    • Food trucks

    • Food recalls

    • Food handler training

  • Rabies Control

  • Recreational Camps

  • Childcare Inspections

  • Menu Labelling

Information Systems

Name/Title/Contact Program Areas

Emerson Rajaram

Chief Information Security Officer, Corporate Director Technology 

  • Information Technology

Julian Martalog

Manager, Health Analytics



Lise Trotz-Williams



  • Population Health Assessment

  • Effective Public Health Practice

  • Immunization Monitoring & Surveillance

Anna Vanderlaan

Manager, Health Promotion


  • Substance Use & Injury Prevention
  • Chronic Diseases Prevention & Wellbeing
  • Planning
  • Health Equity

Administrative Services


Program Areas

Brian Herman

Chief Financial Officer, Corporate Director Finance


  • Finance/Budget Services

  • Resource Management/Procurement

  • Insurance

  • Audit

Patryk Wardach

Chief Human Resources Officer, Corporate Director Human Resources


  • Employee Relations

  • Labour Relations

  • Health and Safety

  • Training

  • Recruitment/Selection

  • Benefits/Pensions

  • Disability/WSIB

  • Compensation/Payroll

Chuck Ferguson

Manager, Corporate Communications


  • Crisis Communication

  • Website/Social Media

  • Media

  • Public Relations

  • Client Service

  • Marketing

  • Library

Rob Richardson

Supervisor, Facilities, Health and Safety

  • Facilities Management