I have some observations and comments that perhaps can be useful:

- Try to be concise with your decisions. Instead, right now you are giving several "answers" to a certain problem. This leads to a messy and hard to understand design.
- Dead spaces. For example, a corridor that will only be used to get to a certain room and then be completely dead, unused.
- The main corridor looks extremely big and has many sizes. The entrance hall looks big too. And isolated.
- Of course I don't know how you are approaching the design, but try to keep in mind that the equipment and the layout go together, as the equipment will dictate the sizes a certain room can and should take, adapting the layout, and the layout as well will adapt the size of the rooms. All at the same time. If you try to equip rooms after randomly deciding their size, you'll find they will either be too big or too small.
- Jobs and how they work together. Some areas need to be close to some other areas. This is how your layout could be decided. Think about relations between rooms. Example: the scanners should be connected to the entrance, and the scanners should be connected to the cryocells, and the cryocells connected to the cloning pods, and the cloning pods connected to genetics. That's easy, but where should surgery be? And the storage? Should paramedics be connected to the station's hallway? Why is genetics connected to that hallway instead? In the entrance, should the lobby desk be so big (3x6) while still completely isolated from medbay? Could it and should it be somewhere more directly connected to medbay as it is box? Knowing chemistry should also be connected to the station's hallway, where does it fit? And so on.

I hope I wasn't too raw, too rough with my words and this helps. I know it is hard.

Here's a simple drawing:
https://puu.sh/tonQy/369fbcd655.png
On the right, your project in lines: the access of rooms is different in each sector, and the size of the rooms follows no logic. It looks like different projects in each room.
On the left, a typical setup of a space with 1 circulation. It's very concise and ideal. It's what you should aim for.