This is a Sources Sought Notice for market research by the Indian Health Service (IHS) to identify capable vendors, with a preference for Indian Economic Enterprises (IEEs) under the Buy Indian Act. The requirement is for ambulatory health care services under NAICS 621999, with a contract duration of one base year plus four one-year option periods. No specific budget amount or performance location is mentioned in the description. Interested parties must submit a capability statement and a completed Buy Indian Act Indian Economic Enterprise Representation Form. Responses will be used solely for acquisition planning and do not constitute a solicitation or commitment to award a contract.