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  • 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:

  • Mary K. Reischmann, MD

    Mary Kate Reischmann, MD, is a board-certified pulmonologist with Orlando Health Medical Group Pulmonary and Sleep Medicine. Specializing in diseases, conditions and injuries of the respiratory system and critical care, Dr. Reischmann treats cystic fibrosis, asthma, lung cancer, chronic obstructive pulmonary disease (COPD) and more.

  • Mary Romain, APRN

    Mary Romain is a board-certified family nurse practitioner (FNP-BC) with Orlando Health Medical Group Urology. She has been a nurse practitioner since 2010 and with Orlando Health Medical Group Urology PUR Clinic since 2015.

  • 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.

  • 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:

  • Marshall Chandler Cress, MD

    Neurological Surgery

  • Matthew W. Lube, MD

    Matthew Lube, MD, FACS, is a general surgeon with Orlando Health Medical Group Surgery. He is board certified in general surgery with added qualifications in surgical critical care. His clinical interests include emergency general surgery and caring for the critically injured in the intensive care setting.

  • Mavany Tant, PA-C

    Mavany Tant is a certified physician assistant (PA-C) at Orlando Health Medical Group Urology. Her expertise includes:

  • Maxim Olivier, MD

    Dr. Maxim Anthony Olivier is a board-certified cardiologist with the Orlando Health Heart and Vascular Institute. He specializes in treating conditions that affect the heart and blood vessels, such as:

  • Kathleen R. Schuemann, MD

    Kathleen R. Schuemann, MD, is a board-certified general surgeon with Orlando Health Medical Group Surgery. She performs minimally invasive, traditional surgical procedures and emergency general surgery, providing expert care to patients through all stages of the surgical process.