The Maryland Medicaid Health Choice Help Line number is: 1.800.284.4510. It is available from 8:00 AM to 5:00 PM, Monday through Friday. This number can be used for: billing questions; Health Choice information and medications through the pharmacy access hotline and coverage questions. To request an application for Medical Assistance for pregnant women (also known as Medicaid), contact: 1.800.456.8900. All others contact he Maryland Department of Health: 1.877.463.3464.