My mother-in-law lives in West Babylon, NY and needs a FEMALE geriatric doctor. Any suggestions on the best place to look?

She says she is acting one way and my father in law and sister in law say something different. They say she is becoming combative, VERY forgetful. They want a doctor who will not just decide she is something and then ignore everything else. She is 70 and still living at home with her husband who recently had to move his buisiness back home to be there for her. He doesnt feel safe leaving her home alone too long. He is finally going to a support group but is so stressed that they are arguing a lot, and the situation is tense.