Dr. John seems to have good knowledge of "All things Male", but I wouldn't trust him with thyroid issues. Here is a good link for you Phil on Top THyroid docs in your area.
http://thyroid.about.com/library/weekly/bldoc-tx.htm
If I remember correctly, you are in PA? If so, I checked the list for you and Dr. William Richwine in Camp Hill looks good. He is a D.O. and prefers Armour over anything.