This is a Sources Sought notice for market research to determine the availability of Indian Economic Enterprises for providing non-personal professional inpatient and outpatient physician services. The services are to be performed at the Colorado River Service Unit in Parker, Arizona. This is not a solicitation for bids or quotes. The notice seeks responses from qualified firms to determine if a future acquisition can be set aside under the Buy Indian Act. Interested firms must provide specific company information and a capability statement.