Seeking information on Physical Therapy market within the United
States (if info includes Canada, that'd be great too). Think typical
info required for marketing plan.

I've found what seem like excellent sources, though haven't had the
time to really delve into them. As but a few examples.
www.apta.org, 
http://www.bls.gov/oco/ocos080.htm
http://www.bls.gov/oes/2003/november/oes291123.htm

As an example of what is needed (but not necessarily limited to): Description of
Physical Therapy (PT) segment (actually pretty much have that covered
from above links), general description of how they spend their work
days (probably have covered also), total number of PTs, and Asst PTs,
number of PTs by state, % of PT centers that are stand-alone, vs part
of a group (ie "of the 5,000 PT facilities, 80% are privately
owned/operated, 10 % are part of a
regional chain, and 10% are associated with hospitals"); general info
on their treatments (ie, "30% of all visitors (patients) had back
related issues, while 20% and 30 % had knee and hip pain respectively"
(that's a made up example), but I'm guessing the breakdown of why
people visit a PT is known and published somewhere.

Also would like info patient population. How many people see a PT
annually (by state if possible), how long an average patient is
treated (ie "five visits over two weeks averaging about 70 minutes per
visit") as well as how many treatments are typically provided (ie "on
average, patients presenting with joint pain are involved with five
treatments- usually involving some combination of electrical
stimulation, ultrasound, and therapeutic excercise" (again, that's
made up).

Would also like general info on reimbursement (overview of how it
works and an overview of how much is covered).

Lastly (not expected.... but just in case you come across this info),
would welcome info on leading dealers/distributors of products into
this industry.

Thanks. Let me know if this makes sense.