consult with ,consult 有何不同?

consult with sb. about/on sth. 与某人磋商某事
consult sb. 向某人咨询
例如：
consult an attorney 请教律师
consult a physician 请医生看病

I am going to consult with Dr. Johnson about my disease.
我打算和约翰逊医生商量我的病情.