Financial analysts warn against judging FPA Medical Management's slide into bankruptcy as the general direction of the physician practice management industry. Said one, wide variations in business strategy make generalizations unrealistic. The consensus about FPA is that it grew too fast. FPA has fallen hard; its stock price, which was around $40 a share last fall, hovered below 20 cents in August.... Jay Gellert has succeeded the retiring Malik Hasan, M.D., as CEO of Foundation Health Systems. Hasan will remain chairman of the board until early next year.