alwaysoncall.substack.com/p/our-penicillin-moment

The best current federal estimate does not support a figure anywhere near 100 million.

• CDC's National Center for Health Statistics says 88.6% of persons in the United States had "a usual place to go for medical care" in 2024.
• The U.S. Census Bureau estimated the U.S. population at 340,110,988 on July 1, 2024.
• If 88.6% had a usual place for care, then 11.4% did not. 11.4% of 340.1 million is about 38.8 million people.

So the article's claim of 100 million people lacking a usual source of care is off by roughly 61 million people.

This correction is about the specific numeric claim, not the broader point that access to care remains a serious problem.