Presolicitation HEALTH AND HUMAN SERVICES, DEPARTMENT OF is planning to procure Clinical Center Patient Taxi Services. This service is typically used to transport ambulatory inpatients/outpatients and their guardians to and from NIH, local hospitals, hotels, and residences within the Washington, D.C. commercial zone including local airports that provide international travel. The contractor(s) will be required to provide passenger service twenty-four (24) hours a day, seven (7) days a week, three hundred sixty five (365) days a year for the National Institutes of Health (NIH), Clinical Center, Building 10, Bethesda, Maryland and the National Cancer Institute (NCI), Medicine Branch program at the Walter Reed National Medical Center, Rockville Pike, Bethesda, Maryland. The service will be operational 365 days a year to include all Federal Holidays and other Government closures e.g., Government furloughs and inclement weather. The anticipated period of performance is six (6) months.