The Department of Health and Human Services, specifically the National Institutes of Health (NIH), intends to award a one-month contract to Caitta Inc. for on-call, on-site, and remote diagnostic radiology services at the NIH Clinical Center in Bethesda, Maryland. The contract requires qualified, medically licensed professionals, including Diagnostic Radiologists, Neuroradiologists, Interventional Radiologists, and Nuclear Medicine Physicians, to support essential medical activities. This procurement is critical for maintaining high-quality radiological services, with specific work schedules outlined for different specialties and on-call assignments during evenings and weekends. Interested parties can express their capabilities and provide feedback to the primary contact, Christopher Lauver, at christopher.lauver@nih.gov, as the contracting process follows the Federal Acquisition Regulation (FAR) Part 13, allowing for a sole source award without competitive bidding.