The Indian Health Service is seeking qualified Indian Economic Enterprises to provide medical physics testing services for the radiology department at the Wagner IHS Healthcare Center in Wagner, South Dakota. The contract will be a firm fixed-price, non-personal services agreement for the period of June 15, 2026, through May 31, 2027. Services include optimizing patient dose, staff exposure evaluations, device performance testing, and quality control measures for radiology equipment. The contractor must employ certified medical physicists meeting AAPM standards and provide all necessary supplies and test equipment. This sources sought notice is for market research only and does not constitute a solicitation.