When enrolling in the Maryland Health Connection (MHC) system a customer will be asked for documentation, which may be submitted by the customer using the consumer portal. If customer is unable to access their account on the consumer portal it can be emailed to: [email protected]; or dropped off at one of the the local offices during business hours. Germantown Office: 12900 Middlebrook, Germantown, 2nd floor, 20874; Rockville, 1401 Rockville Pike, Lobby Level, Suite 1200, 20852, and Silver Spring, 8630 Fenton Street, 10th floor, 20910