H and P: In common doctor language, H stands for history and P for physical. So H and P = the history and physical, the medical history and the physical examination of the patient. The H and P are thus the initial clinical evaluation and examination of the patient.
A "focused" H and P means that the doctor focuses upon the patient's present problem. For example, if a patient is complaining of an ear ache, the doctor cones in on the ear (and does not waste time examining the patient's toenails).
H and P is medical slang.