This is the first time I am using this system.

I want to have between 60 and 90 US orthopedic surgeons filling a
rather long (i.e. 40 minutes) questionnaire concerning the orthopedic
surgery process.
What is the cheapest way of having this done? what is the
corresponding price per surgeon I should expect?

NOTE: 
1) I already have names of some US based market research/survey  companies. If
you plan to give me the name of such a company, it must have
a substantive competitive advantage over other market research/survey companies
for contacting orthopedic surgeons. As a result of this advantage I would
expect a price significantly lower than the market average (i.e the
average quote I'll receive from 10 market research/survey companies for the
same task). Please be explicit about why I can expect that.

2) we will be OK to give a large incentive, if necessary, to encourage
the orthopedic surgeons to fill the questionnaire. But may be yo have
a clever idea that can help us avoid paying the incentive. The
questionnaire is very interesting to fill (for an orthopedic surgeon).

3) If you have an idea about a process/company that could enable me to achieve
this objective, please be precise enogh so that we can IMPLEMENT this
process or call the company you are refering us to. Again be precise
about why there is specfific reason to believe that this
process/company can help us  have orthopedic surgeons fill
our survey at an attractive cost per surgeon.

4) I am not interested in answer of the type: "contact this market
research or market survey  company. I know that they do a lot of work
with doctors in general". However a market research or survey company
with regular and extensive contacts with **orthopedic surgeons** is
welcomed provided that i can reasonably expect that their expertise
will translate in lower costs of survey. Please be very specific about
why I should expect so.
In the latter case, I want that the company has a track record for handling
questionnaire & survey services for third party market research or
marketing & consulting companies.