Rick
I too have ringing in my ear (tinnitus) for over 10 years now. Not too many doctors know much about tinnitus. However if you need to find a doctor near you that does know something, contact the American Tinnitus Association (ATA). They have been a big help to me over the years. Providing information and support when needed. Their URL is ata.org. You can find out more there including specific contact info. Good Luck. I know what it is like to be in your shoes. Have been there many years now. Take Care, Rick