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  • Marc Johannsen, DO

    Dr. Marc Johannsen is a diagnostic radiologist with Orlando Health Medical Group Radiology. He spent a decade providing radiology services for the U.S. Navy, and his skills include obtaining and interpreting:

  • Mark Arthur Vollenweider, MD

    Mark Vollenweider, MD is a board-certified interventional pulmonologist with the Rod Taylor Thoracic Care Center at Orlando Health Cancer Institute, where he also is part of the lung cancer and lung nodule screening program. As a leader in interventional pulmonology, Dr. Vollenweider is skilled at treating patients with conditions ranging from cancer to lung nodules and at using a variety of minimally invasive procedures and diagnostic techniques. He is expertly trained on both the Ion and robotic bronchoscopy platforms that help diagnose and treat lung issues for optimal results. These advanced robotic systems support earlier detection of lung cancer by more easily accessing the disease location and more accurately determining lesion size.

  • Marshall Chandler Cress, MD

    Neurological Surgery

  • Marc Underhill, MD

    Dr. Marc Underhill is a board-certified and fellowship-trained vascular and interventional radiologist with Orlando Health Medical Group Radiology. He has been working as a radiologist and teaching medical residents for the past decade. As both an interventional and diagnostic radiologist, Dr. Underhill can capture and interpret medical images and perform minimally invasive procedures using those images as a guide. His skills include:

  • Michael Gurian, MD

    Dr. Michael Gurian is a board-certified diagnostic radiologist with Orlando Health Medical Group Radiology. He uses medical imaging to look inside the body to diagnose illnesses and conditions and recommend treatment for his adult and pediatric patients.

  • Milagros Fernandez, MD

    Dr. Milagros Fernandez is a board-certified surgeon with Orlando Health Medical Group Surgery with expertise in:

  • M. Firas Sioufi, MD

    Dr. Firas Sioufi is a neurologist with the Orlando Health Neuroscience Institute with an emphasis on clinical neurophysiology. His specialties include:

  • Melissa Soltero Castaner, MD

    Melissa Soltero, MD, MPH, is an obstetrician and gynecologist with Orlando Health Physician Associates. Through every stage of life, she provides women with preventative gynecological services, family planning and care during milestones such as pregnancy, birth, menopause and more.

  • Meenor Sagar, MD

    Dr. Meenor Sagar is a board-certified and fellowship-trained diagnostic radiologist with Orlando Health Medical Group Radiology. He has been providing radiology services to patients in Florida since 2001, and his skills include obtaining and interpreting:

  • Holly Saunders, MD

    Dr. Holly Saunders is a board-certified diagnostic radiologist with Orlando Health Medical Group Radiology. She has served patients in Central Florida for 25 years with expertise covering breast imaging and intervention and general radiology.