Physician I want to shadow asked for my CV?

There's technically a difference, but pretty much everyone uses the terms interchangeably and doesn't gaf about the distinction. For something this informal, it's probably fine. Wouldn't hurt in the long run to write up a CV, though, so you have both.

 

I submitted CV's to all of my shadowing and volunteering opportunities.

 

Nah, people may not say they care but it's annoying to get a professional resume when you asked for an academic CV. Granted most undergrads don't have enough experience to put on a CV but the point remains. They're formatted completely differently and show different information.

 

I understand the differences between the two, but I disagree that most people care one whit. If it's for a formal job application, sure...it doesn't hurt to be correct, which is why I said OP should go ahead and write up a CV anyway. For this, though, shadowing with a family friend? It absolutely doesn't matter.

 

Send what they ask for.

When I ask for a resume, I don't want to read the 5 pages of description of high school activities that a typical pre-med puts. When I ask for a CV, I'm looking for details on something.

Not everyone is going to have a specific aim in mind, but better to err on the side of caution.

 

You're shadowing with a family friend. In this case, they probably said 'CV' because it was shorter and you don't have to worry about the stupid accent on the end of resumé.

 

Who the hell puts high school activities on a resumé? Or makes it 5 pages long?!? I think that is a far greater error than formatting it as resumé vs CV.

 

Freshmen pre-meds? I got two 5-page CVs when I asked for a resume at the beginning of the summer when people were trying to get into my lab. Most of them think that longer = better.

 

I always thought that a resumé should be one page if at all possible. I selectively include the relevant activities for the position I am applying for in order to make that work. Old activities eventually disappear entirely.

My current one is 2 pages, but that's only because my premed advisor specifically asked for an 'exhaustive' one including all activities back until high school (I'm 3yrs out of college), even extracurriculars. I can't imagine how I would ever fill out 5 pages, even if I dipped further and included random minutiae that no professional cares about, like how I used to do tech theatre and that one semester where I joined the bell choir. To do so as a freshman?!? That is mind-boggling.

 

He just probably wants to know that your grades are good enough; so that he is not wasting his time.

 

As an undergrad, resume and CV are pretty interchangeable I believe.
The rule-of-thumb I was taught is as an undergrad, a CV should be no more than 2 pages, and then 1 additional page for each year of post-grad experience.