If you are having a medical emergency, please dial 911.

Our normal hours of operation are Monday through Friday, 8:00 AM to 5:00 PM.  If you have an environmental health emergency, please call the Emergency Operations Central Dispatch at 410-638-3400.  If you are a physician, hospital, or health care provider and need to speak to the communicable disease specialist on call, please call 443-243-5726.  If your call is not answered immediately, please leave a message and someone will return your call as soon as possible.