Obviously the Koch Hospital is non-existent, but that being said, it seems to be named after former Mayor Ed Koch, and former 59th Street Bridge, now called the Ed Koch Bridge, is very close by.
Polymicrogyria (PMG) is a condition characterized by abnormal development of the brain before birth.While a baby is still in the womb, brain cells called neurons are migrating to where they are supposed to go. For some reason, the neurons become disorganized and land in the wrong places. The surface of the brain normally has many ridges or folds, called gyri. In children born with Polymicrogyria, the brain develops too many folds, and the folds are unusually small. The name of this condition means too many (poly-) small (micro-) folds (-gyria) in the surface of the brain. Polymicrogyria affecting a smaller area of one hemisphere (side of the brain) often presents with focal or partial seizures in children or slightly older individuals, many of whom have been otherwise healthy. Sometimes these focal seizures can spread to involve both sides of the brain.
"Do No Harm", the episode title, is derived from the Hippocratic Oath, oath a person takes before being formally recognized as a doctor.