This doctor never looked into any of the medical complaints that I had. Time after time going to her and telling her my medical problems she would just write a perscription for medicine and did not know for sure what the problem was ever. Never did any tests to find out. She is so busy on her computer putting in notes she hardly ever looked at me or checked my medical complaints.She spend about 5 minutes each visit. I am now in the care of a Doctor who immediately said we are going to run Blood tests, sonigram, do x-rays and an MRI. She has found several medical problem that needed attention. I am in no more pain and I am exercising again without headaches, I have lost weight and feel great. No thanks to Dr. Chang...........You will be dissapointed in her.