Avista Health, an Orange, Calif., Medicare Advantage prescription drug scheme provider based in Orange, Calif., said it plans to register its common stock for trading on Nasdaq in an initial public offering, or IPO. Avista Health said it’s targeting a first-quarter debut of its stock with Spartan Capital as its underwriter. The company is planning to file a confidential draft registration statement with the Securities and Exchange Commission during the month of December. The company is not raising money by selling stock, but rather will register its shares for buying and selling on Nasdaq.