Atlanta, Boston, Houston, and Philadelphia all have medical center areas with 3+ hospitals within walking distance of each other.
Houston has the largest medical center in the world with ~10 including Texas Children's Hospital, the largest children's hospital in the world (or at least it was a couple of years ago).
Houston has the largest medical center in the world with ~10 including Texas Children's Hospital, the largest children's hospital in the world (or at least it was a couple of years ago).