In House M.D., which specialty is Dr. Gregory House board-certified in besides nephrology?

Besides nephrology, Dr. Gregory House is board-certified in infectious disease in House M.D.

House is introduced as a specialist in diagnostic medicine, but the character’s stated medical qualifications include board certification in nephrology and infectious disease. These fields help explain his interest in unusual systemic illnesses and kidney-related problems, although the show often places him outside a narrowly defined specialty.

Nephrology concerns the kidneys and their diseases, while infectious disease focuses on illnesses caused by pathogens and related complications. House’s diagnostic work frequently draws on both areas, as well as on consultation with doctors from many other departments.

This detail is often muddled with House’s job title. He is not simply an infectious-disease doctor or simply a nephrologist in the show’s story; he leads a diagnostic team. The question asks for the second board-certified specialty named alongside nephrology.