About ADAM ASHTON. Adam Ashton is a provider established in Amherst, New York and his medical specialization is psychiatry & neurology (psychiatry) with more than 35 years of experience. He graduated from State University Of New York At Buffalo School Of Medicine in 1987. The NPI number of Adam Ashton is 1609855501 and was assigned on January 2006. . The practitioner's primary taxonomy code is ....