Last night, midnight: the resident asking for my advice (as consultant) in the ED did not question my credentials/abilities as a DO.
The parents wondering if it was safe to bring their toddler daughter with palliated congenital heart disease home did not question my credentials/abilities as a DO.
My staff whom I ran the case by did not question my credentials/abilities as a DO.
Funny thing is, no one (patients, families, staff docs, ancillary staff) where I am training have questioned my credentials/abilities as a DO (and 1)my ID clearly states "DO" and 2)this is at an "allopathic" quarternary teaching center).
Even funnier: no one in my residency questioned my credentials/abilities as a DO. In med school? No one questioned my med student abilities based my status as osteopathic student vs. allopathic student.
And how often do I get asked about it (the DO)? In four years of med school, three years of residency and one year of fellowship: I'm still waiting to have to use my second hand to count the times. On the rare occasions I have been asked both longer answers (time permitting) and shorter answers have satisfied the inquirers curiosity (and by curiosity I mean more "I've heard of/seen this, and I've been meaning to ask what this different degree meant" not "I don't trust your credentials" type of curiosity)
So if someday you make it into the profession, then welcome. But do let me know if you feel you are being questioned for your abilities based on the degree, because I'm still waiting for it to happen. And if it does happen ask yourself (as anyone should) if the questioning truly is based on your abilities (not the degree) and you (as a hypothetical abstract-not "you" specifically) are just blaming the degree for your own limitations (unfortunately not every doctor out there, DO or MD, is good. I sometimes wonder if in the population of bad DOs there isn't some blaming of the degree for others' perception of the doctor as a way to avoid self-reflection and self-betterment...but that is an aside)
And don't be too hard on the negative posters above. Spend a few years on SDN and you'll start to see how repetitive certain topics/questions become, thus the "do a search" and "read a sticky" responses. Truthfully the agitiation is not the function of the DO forums but rather the nature of online forums like this itself. You can find other areas even on this site that get their fair share of oft-repeated questions (take a look at the family med forums) and snippy responses.
So, good luck in your journeys and your search for information.
BTW I posted this list once in my own little snit of snippy sarcasm:
http://forums.studentdoctor.net/showthread.php?t=598878