Positives:

- Kim Chang-wan's performance is excellent, while Bae So-eun's performance and dialogue delivery are impressive as well.
- The film is quite scary and creepy in various portions and stays true to its genre.
- The action scenes are very neatly executed.
- The climax is excellent.
- The basic story and screenplay are both gripping. The first half is very thrilling.
- The background score is excellent.

Negatives:

- The film has too much of obscenity which makes it hard to watch it at times.
- The film loses its momentum slightly in the second hour though it regains it very well.

Repeat value: Fine

DOCTOR is a well scripted action-horror thriller which could have been even better had it avoided its over-vulgar and obscene nature.