Physician Called the Father of Epidemiology

This page is the CodyCross answer for the clue below from Inside the Spaceship, Group 1194, Puzzle 3 (Crossword Puzzles).

Question is: Physician Called the Father of Epidemiology

and the answer is: JOHNSNOW

Word Meaning:

JOHN — (slang, US) A prostitute's client.

Definitions from Wiktionary.

Physician called the father of epidemiology — CodyCross Answer | CodyCross Solutions