Why do some people say "My name is Doctor / Dr. X" instead of "I'm Doctor / Dr. X"?

I'm Portuguese and I live in Portugal. Here it's (still) common to see some people using their academic/professional title in introductions: "Hi, I'm Doctor / Dr. / Eng. X".

However, when watching some videos from people living in English speaking countries, I see that some people say "My name is Doctor/Dr. X" instead of "I'm Doctor / Dr. X" and that "sounds weird" to me, because "Dr./Doctor" is NOT part of (almost) anyone's name, as far as I believe.

Is this use of "My name is [TITLE] X" instead of "I'm [TITLE] X" a cultural thing? Does this happen only in some English speaking countries and not in others?

Solution 1:

As a native English speaker, this usage is odd to me, as well. My thought is that the speaker purposely uses this form to emphasize that she or he wishes to be referred to by their title, not informally. The "my name is doctor..." construction might be used in fiction for purpose of characterization, such as to show the speaker believes she or he was addressed in a condescending manner.

Solution 2:

If I were more pompous than I already am, I might introduce myself as Mr. Smith.

Nobody has conferred the title of Mister upon me. It is a title that my culture applies to people of my, er, standing (or lack thereof).

In professional circles, or where I wish to take advantage of entitlement, I might substitute Sir, Doctor, Professor, Councillor, Senator, Captain, President, or other title, in place of Mister.

With tongue in cheek, I referred to pompousness. But it really just depends on the circles (environment) we move in. Of course, one should only use titles to which we are ... entitled.

Solution 3:

In hospital environments I've heard doctors introduce themselves as "My name is doctor X" though I agree with Pippik that "I'm doctor X" is far more common. If a doctor refers to himself as "Dr X" it obviously means that he wishes to be addressed in that manner. Outside his workplace, one would only say that, if he wanted the listener to know he is a doctor. Likewise, if someone asks me my name and I answer "My name is Professor O'Connor", it is clear that I just want the other person to know I'm a Professor.