Greetings,
Congratulations on the good score. The colleges that you may consider taking admission in are as follows:
Maulana Azad Medical College
Vardhaman Mahavir Medical College
University College of Medical Sciences
Army College of Medical Sciences.
These are some of the good colleges. You may consider the others available as well. Follow on the link provided below to know more :

https://www.google.com/search?client=ms-android-samsung-ga-rev1&source=android-home&oq=Delhi+medical+colleges+&aqs=mobile-gws-lite.0.0l5&q=delhi+medical+colleges+for+mbbs

I hope this piece of information proves to be useful to you.
Please feel free to refer back anytime in case you have any further queries.
Wish you all the best in all your future endeavours

Good luck.

With 556 marks you can get into good medical colleges surely.Hope for best possible rank.all the best for counselling.Best of luck