Heat a Dutch oven or large saucepan coated with cooking spray over medium-high. Add onion, bell pepper, and garlic, and sauté 5 minutes.
Stir in cream cheese; reduce heat, and cook until cheese is melted.
Add milk, corn, soup, and tomatoes; cook 10 minutes, stirring occasionally.
Bring milk mixture to a boil. Add shrimp; cook 5 minutes or until shrimp are done. Remove from heat.
Sprinkle each serving with green onions.
