Higher-than-normal levels of ALP in your blood may indicate a problem with your liver or gallbladder. This could include hepatitis, cirrhosis, liver cancer, gallstones, or a blockage in your bile ducts. High levels may also indicate an issue related to the bones such as rickets, Paget’s disease, bone cancer, or an overactive parathyroid gland. In rare cases, high ALP levels can indicate heart failure, kidney cancer, other cancer, mononucleosis, or bacterial infection. Your vitamin D deficiency should be corrected with proper supplements as well. I would advise you to visit a gastroenterologist so that your reports can be clinically correlated and the cause can be confirmed and treated accordingly.