There is no set time or requirement. You just have to have the ambition and ideas to become one. An ability to raise money, or just having a little money helps.
go to yorhealth.com
2 years
they go to school for four years now.
seven years
you can do it after high school
8 years
9 YEARS
3 years
2 years
12 years
4 to 8 years
5 years.