This HBHC service is provided for residents of St. Thomas, Elgin County, and Oxford County. If you do not reside in these areas, your information will be forwarded to the appropriate health unit. If you have questions or concerns, you can reach us at 519-631-9900 ext. 1400 (St. Thomas & Elgin County), 519-421-9901 ext. 3473 (Oxford County), or Toll Free at 1-800-922-0096. Our business hours are Monday to Friday, 8:30 a.m to 4:30 p.m.