"Doctor" is an honorific. If you're addressing him personally, "Dr. Smith" is better; if you're writing it somewhere, it's fine (and may in some cases be preferred) to add the specific degree(s) and societies: "Dr. Fred Smith, MD, FACS." Particularly in lists this is useful, as it may help distinguish Fred Smith the surgeon from Fred Smith the dentist.
Either is correct , unless of course the doctor has a Phd.
Never use Dr. and MD in same title; either Dr. Robert Roberts or Robert Roberts MD is correct.
Walter J. Smith, Jr., MD. Never use Dr and MD (or PhD) in the same name.
Mr. John M. Smith and Dr. Mary F. Smith is correct, or John M. and Mary F. Smith, or Mr. & Mrs. John M. Smith. One should never become awkward in usage for the purpose of being politically correct. It simply draws people's attention unnecessarily.
If you were sending a letter to John Smith, MD - you could address the letter to Dr. Smith.
Dr. Horace smith,md
It is correct if you omit the M.D. and Ph.D. You must decide between Dr. Joe Smith or Joe Smith, M.D., Ph.D. For some odd reason if someone has a J.D., while you can refer to him as Dr. Joe Smith most people prefer to write Joe Smith, J.D., especially when the attorney works in health law or it would otherwise cause confusion as to his expertise.
The correct way to write the name is "James Smith III, MD." In this format, the first name comes first, followed by the last name, the generational suffix (III), and finally the professional designation (MD) for medical doctor. It's important to place the title "MD" after the full name for clarity and proper convention.
A. Dear Dr. Smith, M.D.:
I have never seen Dr after a name. It may be MD, PhD, EdD, DDS, etc. depending on your field of study. Still, if the degree is a doctorate, the Dr would go before the name. Thus as an example, John Smith PhD, or Dr. John Smith.
First, you do not use both. Typically, when work related the abbreviation follows the name. For example, John Williams MD. Or John Williams PhD.
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