Based on pictures of a Dodge Sprinter Ambulance, though the wide nose makes it look like a "normal" van-ambulance. Eh, still good!
I haven't added the sliding door because I'm not sure how to do that, any tips are welcome!
-All doors can open
-Fans/Vents (the grey circles with openings opposite them on the outer wall)
-Oxygen port/power outlet (the green tiles/grey circle on the inner wall)
-Power Outlet near driver door (outer wall)
-Board storage space behind passenger seat (I don't know what it's for but it fits!)
-Oxygen tank storage in rear under the bench
-Bunch of medicine/bandages/gloveboxes on the wall
-Chair/step storage? in rear on wall (fold down glass compartment)
-Lights according to reference pics
-Engine greeble under the sloped hood
-ProCare colors (from reference pic, I'd rather use stickers)
-Fits stretcher with patient
-Fits a bunch of minifigures
-Pistol-grip shifter for the driver because pistol grips are cool xD
-Other stuff I forgot or don't know what it is lol