There are at least two correct ways to formally address two married doctors: 1. The Doctors Michael and Mary Smith (preferred); 2. Dr. Michael and Dr. Mary Smith (feminist).
vmrs
A letter would be addressed to Mr. and Doctor. If they are both Doctors it would be Doctor and Doctor.
The proper salutation for a doctor is doctor or professor depending on their title. In writing the short form can be used which will be Dr. or Prof.
The proper salutation in English for either a medical doctor or the holder of a Ph.D. is the same for either male or female. It is simply "Doctor".
In English, the salutation for a doctor, whether they are a medical doctor or the holder of a Ph.D. is the same for both male and female. It is Doctor.
If being formal, he/she is referred to as doctor.
Dr. and Mr. Smith.
A dentist can either have a Doctorate of Dental Medicine (DMD) or Doctorate of Dental Surgery (DDS). The proper salutation for a dentist is Doctor.
Dear Dr. [Last Name],
The proper salutation for a man who is a doctor is Dr. David Jones or you can say Mr. David Jones, M.D. either way is ok. If the Doctor is married: Dr. David Jones & Mrs. Jones.
The proper salutation to more than one doctor would be "Dear Doctors". A person can also list each doctor's last name after the word doctor. So if the names were Smith, Jones, and Arnold, the salutation would be "Dear Doctors, Smith, Jones, and Arnold".
Dear Doctor Ben Corliss