Consultants BRC

Mathew Greenston, MD

Mathew Greenston, MD

Curriculum Vitae

Dr. Greenston has been an actively practicing physician for almost 20 years and is board certified in Emergency Medicine.  He is also a Fellow of the American Board of Emergency Physicians.  Prior to July 2017, when he relocated to Texas to join BRC, Dr. Greenston was working as an Emergency Department Consultant at Palmerston North Hospital in New Zealand. During his tenure at Catholic Medical Center, Dr. Greenston served as Co-Medical Director of the Emergency Department, Chairman of Medicine and EMS Medical Director.  He obtained his Bachelor of Science degree in Mechanical Engineering from Washington University in St. Louis, MO, and then earned his Doctor of Medicine at George Washington University in Washington, DC. Dr. Greenston continues to practice medicine on a part-time basis in San Antonio, Texas while working full time as a consultant at BRC.    

Certifications and Licenses

  • Fellow of American Board of Emergency Physicians
  • Medical License, State of New Hampshire


  • MD George Washington University, 1998
  • BS  Mechanical Engineering, Washington University, 1992