I have the latest New Properties XML, but I think I found an error. Try recomputing the properties of the Medical Clinic. You have to set its filling degree as 1 to get the default patient capacity of 500, and its coverage radius is a little larger when recomputed at that capacity. I'd say the clinic is a 1/3, 1/2 at the most. The Large Medical Center has issues, too. To get a patient capacity near the default of 3000, a filling degree of .284 is needed. That thing is at least 1/2 if not 3/4. Anyway, even if I'm not understanding filling degrees, I can't get all the properties to match up, as at a capacity of 3000 its coverage radius is reduced by a little, its power consumption is cut by a tenth, and there may be other issues.
Right now I'm making a spreadsheet of the Maxis hospitals. It has their data, plus some of their ratios (like patients / tile, cost per patient, patients per m^3, garbage per patient, patient density cost efficiency, etc). Elsewhere, lowkee said he was willing to do an exhaustive measurement of building sizes to compute filling degrees. If these are indeed errors, maybe he could get a really accurate filling degree for these two buildings so the coefficients for the formlae can be corrected?