White Chicken Chili

2-3 chicken breast halves, cooked and diced/shredded
2 cans great northern beans (the white ones), rinsed and drained (I don't like Kroger brand)
1 can (about 14 oz.) chicken broth
1 can (4 oz.) chopped green chilis
1 tsp. salt
1/2 tsp. cumin
1 tsp. dried oregano
black pepper to taste
1 cup sour cream
1/2 cup heavy cream or milk

Simmer all ingredients together (except sour cream & cream).  Just before serving, stir in sour cream and cream.  Can be topped with diced tomatoes and served with tortilla chips.