# Contact Us ## General inquiries If you have questions or concerns about occupational health at Harvard, please contact OHS. **Email:** ## Location and hours Our locations are by appointment only. Email to schedule an appointment. **All medical emergencies:** Call 911 or go to the nearest emergency room. **Non-emergency research exposures:** Call the Exposure Response Call Center (ERCC) at 1-866-360-8100. The ERCC is an additional resource for exposure risk assessments and does not provide acute medical care. For medical emergencies, call 911. ### Cambridge Suite 125N 124 Mount Auburn Street Cambridge, MA 02138 ### Longwood Suite 015 (Basement) Harvard Medical School Gordon Hall 25 Shattuck Street Boston, MA 02115