The present invention provides a door assembly for a walk- in bathtub. The invention includes a door that fits within a door threshold in a wall of the walk- in tub. The door assembly further comprises a hinge assembly that includes a first axis mount coupled to the door threshold and a second axis mount coupled to the outer side of the door. A double axis hinge is coupled to both axis mounts, thereby connecting the door to the bathtub. The double axis hinge opens the door to the inside of the tub by pivoting about the first axis toward the interior of the bathtub as the door in turn counter rotates about the second axis at the distal end of the hinge, in the direction opposite to that of the hinge.
