Fruits
Apple, raw, with skin	1 medium = 3.3 grams
Peach, raw	1 medium = 1.5 grams
Pear, raw	1 medium = 5.1 grams
Tangerine, raw	1 medium = 1.9 grams
Vegetables
Asparagus, fresh, cooked	4 spears = 1.2 grams
Broccoli, fresh, cooked	½ cup = 2.6 grams
Brussels sprouts, fresh, cooked	½ cup = 2 grams
Cabbage, fresh, cooked	½ cup = 1.5 grams
Carrot, fresh, cooked	½ cup = 2.3 grams
Cauliflower, fresh, cooked	½ cup = 1.7 grams
Romaine lettuce	1 cup = 1.2 grams
Spinach, fresh, cooked	½ cup = 2.2 grams
Summer squash, cooked	1 cup = 2.5 grams
Tomato, raw	1 = 1 gram
Winter squash, cooked	1 cup = 5.7 grams
Starchy Vegetables
Baked beans, canned, plain	½ cup = 6.3 grams
Kidney beans, fresh, cooked	½ cup = 5.7 grams
Lima beans, fresh, cooked	½ cup = 6.6 grams
Potato, fresh, cooked	1 = 2.3 grams
Grains
Bread, whole-wheat	1 slice = 1.9 grams
Brown rice, cooked	1 cup = 3.5 grams
Cereal, bran flake	¾ cup = 5.3 grams
Oatmeal, plain, cooked	¾ cup = 3 grams
White rice, cooked	1 cup = .6 grams

Source: USDA Nutrient Database for Standard Reference Release 15.  Available here. Accessed April 5, 2004.

The doctor may also recommend taking a fiber product such as Citrucel or Metamucil once a day.  These products are mixed with water and provide about 2 to 3.5 grams of fiber per tablespoon, mixed with 8 ounces of water.