Intermountain Feed, Inc. Share: Intermountain Feed, Inc. Visit Website 2310 Frontage Rd. Lewiston, ID 83501 (208) 743-5582 (208) 743-3133 (fax) About About Purina Dealer. We sell feed by the bag for horses, cattle, sheep, pigs and pets. NRS tack, hay & straw. We are a Priefert Ranch Equipment dealer located in North Lewiston.