According to The American Geriatrics Society, there is now approximately one geriatrician for every 2,600 people 75 and older nationwide. While not all elders need a geriatrician, many do. The physical illnesses that come with aging often have nuances that are not always understood by the family doctor. When the mental health issues that can accompany aging are factored in, the need for more geriatricians increases. A person with Alzheimer’s disease may have depression or other mental health issues in addition to his or her dementia, and most family physicians aren’t trained to properly diagnose these complicated cases.