This is a 100% small business set-aside solicitation for medical gas services, including a bulk oxygen system, cylinder rental, and medical gas supply, for the Pine Ridge IHS Hospital in Pine Ridge, South Dakota. The contract will be a firm-fixed price purchase order with one 12-month base period and four 12-month option periods, for a potential total performance period of five years. Award will be made on a lowest price technically acceptable basis, with pass/fail evaluations of price, technical capability, and past performance on an all-or-none basis. Offerors must be registered in SAM and submit a complete price schedule with fully loaded rates for the base and all option years. No budget amount is specified in the notice.