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  • Michael L. Cheatham, MD

    Michael L. Cheatham, MD, FACS, FCCM, is a board-certified surgeon with Orlando Health Medical Group Surgery. Dr. Cheatham currently serves as a surgeon for the Orlando Health Complex Hernia Center. His specialties include general surgery, surgical critical care and neurologic critical care with a particular focus on hernia repair.

  • 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.

  • Jan A Berrios, MD

  • Federico Augusto Montalvo, MD

    Frederico A. Montalvo, MD, board certified in internal medicine, is a member of the Internal Medicine Faculty Practice at Orlando Health. He works

  • Antonio L Rodriguez, MD

    Antonio L. Rodriguez, MD, graduated medical school in the Dominican Republic in 1987. He served his internship and residency at Grace Hospital in Detroit, Mich. 

  • Anwaar H. Randhawa, MD

    Anwaar Randhawa, MD, is board certified by the American Board of Internal Medicine and serves as a hospitalist at Orlando Health South Seminole Hospital.

    Dr. Randhawa earned his medical degree from Allama Iqbal Medical College, Lahore, Pakistan. He completed his residency at the University of Pittsburgh Medical Center, McKeesport, Pennsylvania.

    Dr. Randhawa has practiced medicine for more than 20 years. He is fluent in both Urdu and English.

    During his free time, Dr. Randhawa enjoys trying different restaurants, watching movies and playing with his kids.

  • William Samuel Havron, MD

    William S. Havron III, MD, FACS, joined Orlando Health's Department of Surgical Education as the director of surgical simulation and is now the program director of the general surgery residency. Dr. Havron currently serves as a surgeon for the Orlando Health Complex Hernia Center. He is board-certified in general surgery and surgical critical care.

  • Chadwick P. Smith, MD

    Dr. Chadwick Smith is an acute care surgeon with Orlando Health Medical Group Surgery and a surgeon with the Orlando Health Complex Hernia Center. He is board certified in general surgery, surgical critical care and neuro-critical care. Dr. Smith’s surgical interests include acute care, robotic and burn surgery, and his expertise includes:

  • Umair Tariq, MD

    Umair Tariq, MD, is an internal medicine physician and critical care medicine physician with the Orlando Health Physicians Group. Board-certified in internal medicine, his areas of practice include internal medicine, critical care medicine and neurocritical care medicine.

    Dr. Tariq earned his medical degree from Medical University of the Americas in Charlestown, Nevis, West Indies. He completed his internal medicine residency at WellSpan York Hospital in York, Pennsylvania, followed by a neurocritical care fellowship at the University of Miami Jackson Memorial Hospital in Miami and a critical care medicine fellowship at Orlando Health Orlando Regional Medical Center.

    Additional areas of interest for Dr. Tariq include traumatic brain injury, neurogenic and spinal shock, intracerebral hemorrhage, intracranial tumors, right heart failure, pulmonary hypertension, cardiac arrest and hemodynamics, and acute coronary syndromes.

    Dr. Tariq has first-authored several articles and poster presentations for the Society of Critical Care Medicine, American College of Chest Physicians and American Thoracic Society. He is a member of the Society of Critical Care Medicine and American College of Physicians.

  • 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.