The Indian Health Service is seeking Indian Small Business Economic Enterprises (ISBEEs) capable of providing a one-year comprehensive maintenance and service agreement for Siemens Ysio Diagnostic Radiology Equipment, including two imaging detectors and glassware, with four optional renewal years at a fixed annual cost. This is a Sources Sought notice only, not a solicitation, intended to identify qualified vendors under the Buy Indian Act. Performance of services will be at the Anadarko Indian Health Center. No budget amount is specified. Responses must be submitted by July 24, 2026.