Jason S. Starr, D.O.

For the most serious or complex conditions, turn to Mayo Clinic’s multidisciplinary teams of experts for accurate diagnosis and innovative treatment options. We combine comprehensive, integrated care with a seamless experience to provide exactly the right care. We work with each person on an individualized care plan, including follow-up with home physicians.

Gerardo Colon-Otero, M.D., is a hematologist and oncologist at Mayo Clinic Comprehensive Cancer Center in Jacksonville, Florida. Dr. Colon-Otero treats cancers and conditions including breast cancer, uterine cancer, cervical cancer and ovarian cancer. He is an expert in bone marrow transplantation. Dr. Colon-Otero has a special interest in new treatments aimed at overcoming the challenge of tumor resistance in breast cancer and gynecologic cancer. Working to address cancer care disparities, he collaborates with community-based entities to provide cancer screening to underserved populations. Dr. Colon-Otero speaks English and Spanish. Mayo Clinic Comprehensive Cancer Center is a National Cancer Institute (NCI)-designated comprehensive cancer center.

Umair Majeed, M.B.B.S., M.D., is a hematologist and oncologist at Mayo Clinic Comprehensive Cancer Center in Jacksonville, Florida. Dr. Majeed treats cancers and conditions including cholangiocarcinoma, colon cancer, esophageal cancer, gallbladder cancer, hepatocellular carcinoma, liver cancer, anal cancer, rectal cancer, stomach cancer and pancreatic cancer. He has a special interest in advancing the treatment of cholangiocarcinoma and liver cancer through radio-immunotherapy, targeted therapy and novel treatment strategies. Dr. Majeed speaks English, Urdu, Hindi and Punjabi. Mayo Clinic Comprehensive Cancer Center is a National Cancer Institute (NCI)-designated comprehensive cancer center.