But ethical rules are questionable as to whether you can call yourself a "doctor," because it's potentially misleading. So US lawyers are in the strange position of having doctorates, but being unable to say so.
Here's some more info: http://abajournal.com/magazine/lawyers_are_doctors_too/
The Doctor of Psychology (Psy.D.) degree is an applied doctorate on the same level as (in alphabetical order) the D.B.A. (Doctor of Business Administration), D.D.S. (Doctor of Dental Surgery), D.Div. (Doctor of Divinity), D.M. (Doctor of Ministry), D.M.F.T. (Doctor of Marriage and Family Therapy), N.D. (Doctor of Naturopathy), D.O. (Doctor of Osteopathy), D.P.M. (Doctor of Podiatric Medicine), D.R.E. (Doctor of Religious Education), D.S.M. (Doctor of Sacred Music), D.S.W. (Doctor of Social Work), D.V.M. (Doctor of Veterinary Medicine), Ed.D. (Doctor of Education), M.D. (Doctor of Medicine), O.D. (Dr of Optometry) and other applied or specialty doctoral degrees. Most of these degrees do not require either a master's level thesis or a doctoral dissertation.
Additionally, consider the LL.M. degree. It further complicates things because it is awarded after the J.D.
Thanks to the popularity of physical injury or wrongful death lawsuits, the J.D. will be with you soon regardless of who else is around when the bus hits you.
Guess it depends on your definition of 'sacred'...