A level physics requires a very mathsy approach to questions, while you don't NEED to be doing a level maths it would definitely be easier if you did. As someone has said above, there are bits of physics that require maths that is above gcse like exponential and natural logs in radioactive decay. You could probably learn these topics on your own outside of doing maths.
You generally want to pick a levels you will enjoy and are good at as you need high grades for medicine, so don't do maths if this applies to you. Similarly physics might not be the best option if you struggle with maths.