Dr. Nina F. Johnson

Ravi Shridhar is a Radiation Oncologist practicing medicine in Altamonte Springs, Florida. Dr. Shridhar is highly rated in 17 conditions, according to our data. His clinical expertise encompasses Esophageal Cancer, Anal Cancer, Pancreatic Cancer, Lymphadenectomy, and Pancreatectomy. Dr. Shridhar is currently accepting new patients.

Dr. Naren Ramakrishna is a board-certified radiation oncologist with the pediatric brain tumor program at Orlando Health Arnold Palmer Hospital for Children and director of the pediatric and adult proton therapy programs at the Orlando Health Cancer Institute. He cares for children as well as adults, and his specialties include: Brain and spine tumors Proton therapy Brain metastases Meningioma Vestibular schwannoma Pituitary adenoma Astrocytoma Glioblastoma Arteriovenous malformations Trigeminal neuralgia Chordoma Chondrosarcoma Hemangioblastoma Medulloblastoma Ependymoma Dr. Ramakrishna draws on his extensive research background to treat his patients with the most advanced practices. He strives to create supportive, compassionate and empathetic relationships with his patients and their families. Dr. Ramakrishna's Training Dr. Ramakrishna earned his medical degree through the Medical Scientist Training Program at Cornell University's Weill Cornell Medical College in New York. He earned a doctorate in cell biology and genetics from the Weill Cornell Graduate School of Medical Sciences. Dr. Ramakrishna completed a residency in radiation oncology at Johns Hopkins Hospital in Baltimore, where he served as chief resident. He also completed a Koch Research Fellowship in gene therapy and received an American Association for Cancer Research-Glaxo Wellcome Oncology Scholar Award. About Dr. Ramakrishna Dr. Ramakrishna is board certified in radiation oncology by the American Board of Radiology. He served for eight years on the faculty at Harvard Medical School as an instructor in radiation oncology. He also was chief of the radiation oncology department at Dana-Farber/Brigham and Women's Cancer Center and director of the CNS Radiation Oncology Fellowship Program. Dr. Ramakrishna is a principal investigator in a study focused on central nervous system malignancies at Orlando Health Arnold Palmer. He has written numerous book chapters and peer-reviewed manuscripts and has presented his work at national and international conferences. Outside of work, Dr. Ramakrishna is an avid musician and songwriter. He also enjoys kayaking, hiking, rollerblading and biking. Dr. Ramakrishna is highly rated in 30 conditions, according to our data. His clinical expertise encompasses Primitive Neuroectodermal Tumor (PNET), Posterior Fossa Tumor, Metastatic Brain Tumor, and Brain Tumor. Dr. Ramakrishna is board certified in Radiation Oncology. Dr. Ramakrishna is currently accepting new patients.

Dr. Justin Rineer is a board-certified and fellowship-trained radiation oncologist at the Orlando Health Cancer Institute. His specialties include: Lung cancer Head and neck cancer Sarcoma Melanoma Squamous cell carcinoma Basal cell carcinoma Merkel cell carcinoma Thymoma Stereotactic body radiation therapy Proton beam radiation therapy Adaptive radiation therapy Re-irradiation Dr. Rineer and his multidisciplinary team strive to instill confidence and hope in his patients by helping them understand and participate in their treatment plan. Dr. Rineer's Training Dr. Rineer earned his medical degree at State University of New York Downstate in Brooklyn, graduating magna cum laude. He completed a residency in radiation oncology at State University of New York Downstate, where he served as chief resident. He completed a fellowship in advanced radiation oncology at the University of Texas MD Anderson Cancer Center in Houston, where he gained extensive experience in applying advanced medical technologies to lung cancer and other thoracic malignancies. About Dr. Rineer Dr. Rineer is board certified in radiation oncology by the American Board of Radiology. He has presented his original research at top national and international meetings, including the American Society of Radiation Oncology and American Society of Clinical Oncology. His primary research interests include improving outcomes in lung and head and neck cancer by combining multiple treatments. His professional memberships include the American Society of Clinical Oncology, International Association for the Study of Lung Cancer and American Society for Radiation Oncology. Outside of work, he enjoys spending time with family, traveling, cooking, scuba diving, basketball and soccer. He is fluent in English and French. Dr. Rineer is highly rated in 24 conditions, according to our data. His clinical expertise encompasses Small Cell Lung Cancer (SCLC), Lung Cancer, Pleuropulmonary Blastoma, Non-Small Cell Lung Cancer (NSCLC), and Prostatectomy. Dr. Rineer is board certified in American Board Of Radiology - Radiation Oncology. Dr. Rineer is currently accepting new patients.