The Texas Hematology Oncology Centers, PA, bring over 50 years of experience helping cancer and blood disorder patients and their families navigate the diagnosis, treatments and path to health. The oncology medical staff offers compassion and care, and provide knowledge of cutting-edge technology and cancer therapies directly to the communities of North Texas.. Second Opinions for Cancer Care Seeking the second opinion of an expert in cancer care can ease your mind and help you feel more secure in the decisions you are making. At the THOCPA Cancer Center, we welcome patients who seek second opinions for cancer care.