White Tower

The story is about politics and the power struggle among doctors at a hospital. Friends can switch allegiance, and enemies can turn supportive in split seconds.
Dr. Jang Joon Hyeok was an ambitous surgeon who wanted nothing more than to be the department head when his boss retired. His effort was frustrated by his boss Dr. Lee who brought in Dr. Noh Min Guk from the States with the intention of letting him be the next department head. Dr. Lee's wife has also set her sight on Dr. Noh to be her future son-in-law whereas the daughter, Lee Yoon Jin has something else on her mind.
Dr. Choi Do Young was a good friend of Dr. Jang, and he did not like to get involved in any of the hospital's politics but only concentrated on his work and healing patients. But when Dr. Jang was being sued by a patient's family for causing his death due to negligence, he joined forces with Lee Yoon Jin to stand up for the patient's rights at the risk of losing his post at the hospital and friendship.
(Source: DramaWiki)
~~ Adapted from the novel "Shiroi Kyoto" (白い巨塔 ) by Yamazaki Toyoko (山崎豊子).