It could be a fairly healthy meal. It depends on the type of beef they or you use and its fat content. To keep it healthy use ground beef that is at least 96% lean (4% fat content).
Hamburgers can contain about 24 grams of fat but that can be brought down based on how it is cooked. If cooking on a flat grill or frying pan it will be sitting in its own fat and will absorb back into the burger. Be sure to use a grill were the fat will drip away from the burger. If you bake it, make sure it is sitting on a rack in the pan so again the fat can drip away from the burger.
A super lean (7% fat) 1/4 pound burger will still have 170 calories after cooking.
Be sure not to add cheese or bacon to the burger or salad, use a low fat dressing and it would be a fairly healthy meal.
Good luck and best wishes.