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ACES Team

To transfer a patient, please call 410-328-1234. For a follow up appointment, please call The Shock Trauma Outpatient Pavilion (STOP) at 1-855-802-1321.

Jose J. Diaz, MD, CNS, FACS, FCCM, Chief
Patient Care, Education, Research

The primary mission of the Acute Care / Emergency Surgery service is to provide timely surgical assessment, operative and/or non-operative management of the acute ill non-trauma surgical patient.

The Acute Care/Emergency Surgery service will educate physician extenders, medical students, residents, and clinical fellows to increase their understanding of acute non-trauma surgical disease.

From the Emergency Department to the Operating Room to the ICU to the Floor, the care of the patient must be under study. This will allow the specialty of acute care surgery to address our primary mission of improving patient care by increasing our understanding of acute surgical disease.


Primary Acute Care Surgery Faculty

Jose J. Diaz, MD, FACS
Chief of Acute Care Surgery
Professor of Surgery

Special Interests: Thoracic Trauma; Complex Abdominal Wall Reconstruction / Ventral Hernia; Re-do General Surgery; Intestinal Fistulas; Surgical Nutrition
Medical Degree: University of Texas Medical School at Houston
Residency: Huron / Hillcrest Hospitals, Cleveland Clinic Foundation Affiliated Health Systems
Fellowship: Vanderbilt University Medical Center
Certification: General Surgery; Surgical Critical Care; Adult Nutrition Support

Academic Office: 410-328-7611


Brandon Bruns, MD, FACS
Assistant Professor of Surgery

Special interests: Complex emergency general surgery / cholecystectomy / abdominal wall reconstruction / trauma surgery
Medical Degree: University of Texas Medical School at Houston
Residency: University of Texas, Southwestern-Parkland Hospital
Fellowship: University of Pennsylvania
Certification: General Surgery; Surgical Critical Care;

Academic Office: 410-328-7611


Laura S. Buchanan, MD
Assistant Professor of Surgery

Special Interests: Geriatrics
Medical Degree: West Virginia University School of Medicine
Residency: West Virginia University Hospitals, General Surgery
Fellowship: R Adams Cowley Shock Trauma Center, University of Maryland Medical System, Trauma/Surgical Critical Care

Academic Office: 410-328-3495


Margaret Lauerman, MD
Assistant Professor of Surgery

Special Interests: open abdominal management, ventral hernia repair
Medical Degree: Columbia University College of Physicians and Surgeons
Residency: Boston University Medical Center
Fellowship: University of Maryland

Academic Office: 410-328-3495

Paulesh K. Shah, MD, FACS
Assistant Professor of Surgery

Special Interests: Respiratory Failure
Medical Degree: Boston University School of Medicine
Residency: University of Maryland Medical Center, Baltimore Maryland, General Surgery
Fellowships: University of Maryland Medical Center/R Adams Cowley Shock Trauma Center, Surgical Critical Care

Academic Office: 410-328-7611


Ronald B. Tesoriero, MD, FACS
Assistant Professor of Surgery

Special Interests: Vascular & Thoracic Trauma; Traumatic Brain Injury; Resuscitation; Surgical Infections & Sepsis; Wound Healing & Surgical Nutrition
Medical Degree: University of Cincinnati College of Medicine
Residency: University Hospitals of Cleveland Case Western Reserve University School of Medicine, General Surgery
Fellowship: R Adams Cowley Shock Trauma Center, Surgical Critical Care; R Adams Cowley Shock Trauma Center, Trauma Surgery
Certifications: General Surgery; Surgical Critical Care

Academic Office: 410-328-9878


Additional Acute Care Surgery Faculty

William C. Chiu, MD, FACS, FCCM
Associate Professor of Surgery
Program Director, Surgical Critical Care Fellowship
Chair, Shock Trauma Center Research Committee

Special Interests: Surgical Critical Care
Medical Degree: University of Maryland School of Medicine
Residency: UMDNJ/Robert Wood Johnson Medical School, General Surgery
Fellowships: University of Maryland Medical Center/R Adams Cowley Shock Trauma Center, Surgical Critical Care
Certifications: General Surgery; Surgical Critical Care

Academic Office: 410-328-9878


Sharon M. Henry, MD, FACS
Professor of Surgery
Director, Division of Wound Healing and Metabolism

Special Interests: Trauma and Critical Care Surgery; Complex Injury; Wound Healing and Metabolism; ATLS
Medical Degree: University of Maryland School of Medicine
Residency: State University of New York Health Sciences Center at Brooklyn, General Surgery
Fellowship: University of Minnesota, Critical Care Medicine
Certifications: Surgery; Surgical Critical Care

Academic Office: 410-328-9878


Acute Care Surgery Nurse Practitioners

Barbara C. Eaton, RN, MS, CRNP

Special Interests: Palliative Care; Critical Care; Nutrition Management; Alternative Medicine
Graduate Degree: University of Maryland School of Nursing
Undergraduate Degree: Curry College - BA, BSN, and Business Administration
Certifications: CCRN; Sigma Theta Tau; ELNEC Instructor

Office: 410-328-5831

Lindsay O'Meara, RN, MS, CRNP

Special Interests: Traumatic Brain Injury; Critical Care; International Healthcare; Acute Care Surgery
Graduate Degree: University of Maryland School of Nursing
Undergraduate Degree: East Carolina University

Office: 410-328-5831

Loren Bonenclark, MPAS, PA-C

Special Interests: Surgery and Critical Care
Graduate Degree: Master of PA Studies from University of Florida
Undergraduate Degree: Exercise Science BS from Florida State University

Office: 410-328-3365

Administrative Support

Sandra Nelson

Patient Care Coordinator
R Adams Cowley Shock Trauma Center
Acute Care Emergency Surgery
Phone: 410-328-5831
Fax: 410-328-0687
Email: sandra.nelson@som.umaryland.edu

Josanne Walker

Executive Assistant
Phone: 410-328-7611
Fax: 410-328-0687
E-mail: josanne.walker@som.umaryland.edu