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<p>The short answer to your question is that the MD is not a doctorate degree nor is it equivalent to a PhD. That said, it’s still certainly a prestigious degree and, at least in the US, it is customary to still address someone with an MD as Dr. (although the history behind that is somewhat interesting). And, of course, some MDs do go on to complete the additional work required to also receive a PhD (eg MD/PhD).</p>
<p>The reason that the MD and those other degrees were listed as lower than a doctorate in the questionnaire in terms of level of education achieved is that these degrees do not meet the traditional definition of what is required to receive a ‘doctorate’ level degree. In particular, where they fall short is the requirement for the generation and defense of the production of ‘new’ knowledge - generally in the form of an extensive research project, thesis and defense of the thesis. </p>
<p>The MD, JD and other similar degrees are classified as ‘first-professional’ degrees. These degrees generally contain ‘masters degree’ level coursework along with extensive ‘apprenticeship’ style training of the trade in question (medicine, law, religion, etc.). Most of these professional schools used to issue masters degrees to their graduates, although some schools eventually started issuing specialized doctoral degrees even though they didn’t actually complete the requirements necessary for a doctorate. This practice is generally limited to the US. </p>
<p>As a result, the ‘first-professional’ degree classification was created in the US to identify those degrees that represented highly advanced training in a particular subject beyond what is normally required for a masters degree but falling short of what is required to be awarded a doctorate. </p>
<p>The US Department of Education states (on a website defining the different classes of degrees one can obtain in the US education system):</p>
<p>“Holders of first-professional degrees are considered to have an entry-level qualification and may undertake graduate study in these professional fields following the award of the first-professional degree. Several of these degrees use the term “doctor” in the title, but these degrees do not contain an independent research component or require a dissertation (thesis) and should not be confused with PhD degrees”</p>
<p>All that said, it shouldn’t take anything away from the MD, JD, or other first-professional degrees. They are all very prestigious and require several years of hard study to obtain, but they are not equivalent to a PhD.</p>