can i file a claim againt dollar for falling in the entry way

The answer is probably yes; however, what was the reason for the water on the floor at the entry. For example, was it raining? Then you would need to know how long the water was there before the staff knew about the water.   If the staff knew the water was there and they did not put out signage to be careful or clean it up, your premises liability case becomes stronger.  The longer the staff knew the water was there and did nothing, the stronger your case becomes.  Howevrer, if the water was on the floor for a very short period of time and no one knew about, your case becomes weaker. When it comes to a primises liability case, you are going to need to show damages.  If you are in pain, yes, go see a doctor.  If you do not have a documented injury, your case becomes weaker.  If you purse a case, your doctor's report will become evidence to document your injury and determine damages.