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  • Nadie Gressine, MD

    Dr. Nadie Gressine is a board-certified and fellowship-trained diagnostic radiologist with Orlando Health Medical Group Radiology. She has been in practice for more than 20 years. She cares for patients who need interpretation of their diagnostic imaging, including:

  • Nahomy Calixte, MD

    Dr. Nahomy Calixte is a urologist with the PUR Clinic at South Lake Hospital, part of Orlando Health Medical Group Urology. She specializes in a variety of urological conditions, including:

  • Ronald J. Lynch, APRN

    Ronald “Jamie” Lynch is a nurse practitioner with the Orlando Health Heart and Vascular Institute providing inpatient cardiology care including: 

  • Lorraine Nadjafi, MD

    Dr. Lorraine Nadjafi is a board-certified diagnostic radiologist with Orlando Health Cancer Institute. She is the current breast imaging section chief and has led it since 2020.

  • Silvia Fernandez, MD

    Dr. Silvia Fernandez is a board-certified gastroenterologist with the Orlando Health Digestive Health Institute. She diagnoses and treats disorders of the digestive system, including:

  • Joel A. Garcia-Fernandez, MD

    Dr. Joel Garcia is a board-certified cardiologist at the Orlando Health Heart and Vascular Institute. He is board certified in internal medicine, cardiovascular disease, interventional cardiology and endovascular medicine, and his expertise includes:

  • Akash Nanda, MD, PhD

    Radiation Oncology

  • Julio J. Alvarez Cardona, MD

    Dr. Alvarez Cardona is board certified in infectious diseases and joined Orlando Health Medical Group Infectious Disease in February.

  • Jonathan Rodriguez-Ortiz, MD

    Jonathan Rodriguez-Ortiz, MD, is board-certified in cardiovascular disease with Orlando Health Heart & Vascular Institute. He also has Level III training in multimodality cardiovascular imaging (MRI) and computed tomography (CT). He works with referring physicians to identify the most beneficial diagnostic imaging for his patients.

    Dr. Rodriguez-Ortiz earned his medical degree from the University of Puerto Rico School of Medicine in San Juan and a bachelor’s of science degree in biology from the University of Puerto Rico in Mayaguez. He completed his residency in internal medicine and fellowship in adult cardiovascular disease at the University of Puerto Rico School of Medicine. He then completed a fellowship in advanced cardiovascular multimodality imaging at the University of California San Francisco.

    He also is a diplomate of the American Board of Internal Medicine and the United States Licensing Exam and is a registered physician in vascular interpretation.

    Dr. Rodriguez-Ortiz is a member of the American College of Cardiology, American Society of Echocardiography, American Society of Nuclear Medicine, Society of Cardiovascular Magnetic Resonance, Society of Cardiovascular Computed Tomography, and Alpha Omega Alpha Medical Honor Society. He has published in peer-reviewed journals and is fluent in both English and Spanish.

  • Corporate Office of Research Operations Team

    Learn more about our CORO team.