I am looking for statistics about limited English proficient (LEP)
patients in the U.S. healthcare system.  Specifically, I would like to
know the following:

1.  the percentage of inpatients in hospitals and clinics that are
LEP.  

2.  the average number of days an LEP inpatient spends at the
hospital.  (If there is a study that indicates that LEP patients spend
more time in the hospital than the average English-speaking patient, I
would also like a reference to that study.)

3.  the number of healthcare providers, including nurses and doctors,
that are bilingual

Items number 1 and 2 are the most important, but specific information 
about LEP patients is key.

I am not interested in statistics about users of the healthcare system
in general.  I would only like to see information with a focus on LEP
patients.

I know already the percentage of LEP individuals in the United States.
 I also know the average number of days for short-stay hospital
utilization (by all patients) in the United States (4.4).