Heat oven to 400°F. Place pie crust in 10-inch tart pan with removable bottom as directed on package for one-crust filled pie. Bake at 400°F. for 7 minutes. Remove partially baked crust from oven; sprinkle salami evenly over bottom of crust.
Beat eggs and cream cheese in medium bowl. Add remaining cheeses; mix well. Pour over salami. Arrange tomato slices around edge, overlapping slightly.
Bake at 400°F. for 28 to 38 minutes or until center is golden brown. Do not underbake. Let stand 5 minutes. Sprinkle with oregano and pepper. Cut into wedges.