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  • Muhammad S. Ghumman, MD

    Muhammad (Mo) Ghumman, MD, FACC, is an interventional cardiologist with Orlando Health Heart & Vascular Institute. He is board certified in internal medicine, echocardiography, cardiovascular disease and interventional cardiology. He also is a registered physician in vascular interpretation and a fellow of the American College of Cardiology (FACC). His clinical interests include acute coronary intervention as well as peripheral artery disease intervention.

  • 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.

  • 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

  • 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.

  • Steven Walczak, MD

    Dr. Steven Walczak is a board-certified radiologist and a fellowship-trained musculoskeletal radiologist with Orlando Health Medical Group Radiology. He cares for patients who need interpretation of their diagnostic imaging, including:

  • 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.

  • Joseph Abdellatif Ibrahim, MD

    Dr. Joseph Ibrahim is the director of surgery with Orlando Health Medical Group Surgery and a surgeon with the Orlando Health Complex Hernia Center. He is board certified in general surgery and surgical critical care, and his expertise includes:

  • John Murphy, MD

    Dr. John Murphy is a board-certified radiologist with Orlando Health Medical Group Radiology serving Central Florida patients since 2005. His specialty is neuroradiology. His diagnostic imaging experience covers: