Staff Directory

Hospitals & Locations > Bethesda North Hospital
Medical Directors

Michael Petro MD F.A.C.S.

Dr. Petro is a highly skilled surgeon with special interest in trauma and acute care surgery. He is board certified by the American Board of Surgery and is a fellow with the American College of Surgeons. After graduating from the Indiana University School of Medicine in 1998, Dr. Petro had a distinguished career as a trauma surgeon in the United States Air force. Prior to retiring from the Air Force, Colonel (ret) Petro was the Director of the United States Airforce, Center for Sustainment of Trauma and Readiness Skills at the University of Cincinnati Medical Center.

Dr. Petro is passionate about teaching and is often seen in the community providing trauma education to schools, fire departments and other community partners.

Ashley Tameron MD

Dr. Tameron is a graduate of the University of Miami where she graduated with a Bachelor of Science in Biomedical Engineering. She obtained her medical degree from Northeast Ohio Medical University in 2013 and received her surgical training at TriHealth in Cincinnati, Ohio. Prior to joining Trauma Services in 2019, Dr. Tameron completed her Surgical Critical Care Fellowship at The Ohio State University She is double boarded in General Surgery and Surgical Critical Care. She not only has expertise in Acute Care and Trauma Surgery, Dr. Tameron is an expert in Critical Care Medicine.

As Trauma Medical Directors, Dr. Petro and Dr. Tameron are responsible for the overall functions and daily operations of the trauma program. They collaborate with surgical and medical specialists as well as hospital administration to ensure injured patients receive the highest level of care.

Trauma Services Staff

Katie Stegman MSN, RN, CEN, TCRN, EMT-P
Trauma Program Manager

Katie Stegman has over 25 years of experience in emergency medicine and critical care and has a passion for trauma. She received her Bachelor of Science in Nursing from The Ohio State University and her master’s degree in nursing administration from Mount St. Joseph University in 2018.

As the Trauma Program Manager, Katie works closely with the Trauma Medical Directors and is responsible for the organization of services and systems necessary for a multidisciplinary approach to providing care to injured patients. She also provides trauma related education at the hospital and in the community.

To contact Katie Stegman please email

Emma Tiemeyer
Trauma Registrar

Emma joined the service in February 2019. As a trauma registrar, Emma is responsible for maintaining patient confidentiality while entering specific patient data into the trauma registry. The trauma registry is a national database of information about all patients who have gone to a hospital to receive treatment for traumatic injuries.

The registrar also designs and produces reports for the service and hospital administration. These reports support decision making and guide the management of the trauma service.

Sherry Stargle
Trauma Registrar

Sherry has a dual role within trauma services and has been with the team since 2016. Sherry is the public face of trauma services and is responsible for all administrative duties including maintaining and publishing the trauma services call schedule, as well as scheduling of clinical and administrative activities. Sherry also is a trauma registrar and works closely with Emma in abstracting and entering data into the trauma registry for Bethesda North Hospital, Bethesda Butler County Hospital and Bethesda Arrow Springs.

Sharon Garry B.S. Ed
Hamilton County Safe Communities Coordinator

Sharon has been a TriHealth Team Member since 1989 after graduating from The Ohio State University with a Bachelor’s in Education. She has held various positions in Physical Medicine & Rehabilitation at Good Samaritan and Trauma Services at Bethesda North. Sharon’s current role is Hamilton County Safe Communities Grant Coordinator. She is responsible for managing a $100,000 grant awarded from the State of Ohio to educate, promote and highlight traffic safety initiatives. Sharon collaborates with community partners such as law enforcement, city officials, health care professionals and high schools within Hamilton County to promote traffic safety. Through her initiatives and partnerships, she attends many public engagements and provides education which is the foundation to a cohesive/complete approach to decrease incidents of traffic crashes, ultimately saving lives throughout Hamilton County.

Racheal Burroughs ACNP-BC, ACNPC
Trauma Nurse Practitioner

Racheal is a board-certified Acute Care Nurse Practitioner. She received her Bachelor of Science in Nursing Degree at the University of Cincinnati then graduated from Northern Kentucky University with her Masters. Racheal works closely with the trauma surgeons to plan, implement and evaluate health care treatments to ensure the patients are receiving the highest level of care. She also works closely with Case Managers, Social Workers, and Financial Counselors to help coordinate the discharge process.

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