Larry's numbers are well publicized but a bit misleading. About half of Americans have medical debt but that just means they have an outstanding debt that hasn't been paid yet. The amount sent to collection is much smaller but I couldn't find a good number but I have seen information that indicates that much less than 10% have "large" medical debt. Just try to imagine a system trying to collect from over 50% of Americans. The debt collection business would have to be larger than the IRS.
The medical bankruptcy number stems from Elizabeth Warren's research. It was flawed in that it did not differentiate between bankruptcy WITH medical debt and CAUSED by medical debt. When you are in financial trouble, a medical bill is the last one you pay. They can evict you, repossess your car, etc. but they can't repossess your body. Later research indicates that medical bills are the primary cause of bankruptcy is closer to 10%.
Medical debt is a real problem, but there is a lot of misinformation about it.