For help with your Portal please contact your Providers office directly: Primary Care Prince Frederick - 410.535.4488 Solomons - 410.394.3712 Twin Beaches - 410.257.7279 Obstetrics & Gynecology - 410.414.4740 Hematology & Oncology - 410.414.9116 Center for Vascular Care - 410.414.2790 Gastroenterology - 410.535.7630.