TMAC, Trauma Managers Association of California


The Directory of the Trauma Managers Association of California includes both hospital and EMS agency trauma managers from across the state.

Click here for a list of current TMAC members

2020 Board of Directors

Georgi Collins, MSN, RN, PHN

Georgi Collins

Georgi Collins has over nineteen years of clinical experience specializing in nursing and leadership roles in critical care, emergency, pre-hospital, and trauma care. For the last nine years, she has worked at Riverside Community Hospital as the Trauma Program Director of an Adult Level II Trauma Center in Riverside, California. Previously, she managed the County of San Bernardino’s Trauma System further enhancing her in-depth understanding of California’s Trauma Regulations and EMS standards. Currently, Georgi serves as the AVP of Hospital Corporation of America’s (HCA) Trauma Services, which encompasses four Level II Trauma Centers in California and Nevada - the largest of which is Sunrise Medical Center that recently played a pivotal role in managing over 150 trauma activations from the 1 October Incident.  In her current role, she is responsible for managing all trauma-related activities across the Far West Division with an emphasis on the need for continuous assessment of individual programs, personnel, resources and survey readiness.   

Georgi received her Master’s Degree in Nursing with a focus on population-based nursing from California State University, San Bernardino. She is a member of HCAs Trauma Nurse Advisory Council (TNAC), which is charged with developing trauma-related best practices.  These best practices support all 90 of HCA’s Trauma Centers and includes performance improvement initiatives, clinical topics and trauma financial pro-forma. Georgi is also the Chair of HCA’s Trauma Services Policy Taskforce and develops Enterprise-wide Diversion and Trauma Activation Criteria. Georgi performs mock ACS surveys in preparation for ACS Consultative and Verification site visits for all of HCA and is working on developing a site-preparation course for TNAC. Georgi has also been a member of TMAC for over ten years. 

Georgi, a native Californian, lives in San Bernardino County with her husband, two children, seven dogs, and three horses. She enjoys riding her horses and spending time with her family.


Sharon Brown, MSN, RN, CCRN, TCRN, ONC

Sharon Brown

Sharon Brown has worked in the trauma nursing field for over 15 years in various roles at Arrowhead Regional Medical Center.  During this time she has attended several trauma-related conferences and seminars to further her knowledge of trauma nursing care.  She is currently an instructor for ATCN and implemented the Stop the Bleed program at ARMC.  Although  her role has broadened in terms of nursing scope, trauma always has and always will be her passion.

ARMC is a 456-bed university-affilliated, Level II ACS verified trauma center and regional burn center.  Annual trauma volume is between 3300 and 3600 patients.Shar

Denise Greci Robinson, RN, MS, CNS

Denise Greci Robinson

Denise Greci Robinson has been an ED/ Trauma nurse for 17 years. In that time she worked as a staff nurse, Unit Educator, Clinical Nurse Specialist, Trauma Coordinator, and for the last year Trauma Program Manager. What she loves most about nursing is that in all these roles she has had the opportunity to learn and grow as a clinician as well as develop new skills in leadership, education, and quality.  Specifically in her roles with the trauma program, she has developed a respect and love for data and how that knowledge can drive improvement in outcomes for patients.

Trauma Program Manager is a new role for Denise and she feels that she has a lot to learn.  She sees collaboration and participation with CA TMAC as an excellent opportunity to leverage the members' years of experience to accelerate her development. What she can offer to the group is a commitment to meeting the requirements of the role of Secretary as defined in the bylaws, but also her experience as a clinician and educator.

Wendy McEuen, RN, MSN, CEN, TCRN

Wendy McEuen

Wendy currently works as Trauma Outreach and Injury Prevention Coordinator.  She holds National certifications in Emergency and Trauma nursing.  She has 15 years experience in the Emergency department including staff nurse, charge nurse, MICN and Educator.

Director at Large for Hospitals

Amy Brammer

Amy Brammer earned her Bachelor of Science in Nursing from St. Louis University, St. Louis, Mo. She is currently working on her Masters of Science in Nursing at Lindenwood University, St. Charles, MO.  Amy is a member of the Society of Trauma Nurses, Emergency Nurses Association, and the American Trauma Society.  She has twenty-seven years of nursing experience, most of those spent caring for trauma patients throughout the care continuum.   In the last six years, Amy has managed and provided leadership to Trauma Programs in Missouri and California.   Amy is currently the Trauma Program Director at Kaiser Foundation Hospitals –Vacaville, California.   

Amy has been faculty for the AAAM Abbreviated Injury Scale (AIS) Course since 2014, and currently the Chair of the AIS Certification Board. She has two certifications in trauma /emergency care and two certifications in trauma registry.  

Shanna Kissel
Director at Large for EMS

Shanna Kissel

Shanna Kissel is the Trauma Nurse Coordinator/Clinical Supervisor for the Riverside EMS Agency.  She started her career in 2003 on the Pediatric floor at Huntington Memorial Hospital in Pasadena. From there she continued to work with pediatrics at Long Beach Memorial- Miller West for 2 years. After moving to Riverside, Shanna made a department change to the Emergency Department at Riverside County Regional Medical Center. She was a bedside nurse and charge nurse while she was working on her BSN.

Shanna made the transfer into Trauma Services in 2009 and it was here that she became the Performance Improvement / Injury Prevention Nurse. This was her “home” and comfort zone in the trauma world. During this time she worked on her Master’s Degree in Nursing Administration and wanted to utilize this in her career. In 2014, she was given the opportunity to be the Trauma System Coordinator for Riverside EMS Agency which she has been doing for two years. As the Trauma System Coordinator, she has been involved in a multi-county trial study from data collection to implementing county wide education. In her current role she recently published a Trauma System Report using county-specific trauma data as a tool for agencies to use for Injury Prevention and Education. She is always seeking ways to improve trauma patient care from the system perspective.

Heather Venezio, RN, MS, CEN
Immediate Past President

Heather Venezio

Upon completion of my Master’s Degree and qualifying exams for Ph.D. in Developmental Psychology at Virginia Polytechnic Institute and State University and exposure to nursing care at an NICU in a Roanoke, Virginia hospital, I decided I wanted to care for children, not just observe and measure their behavior.  Upon completion of my BSN at University of Louisiana at Lafayette, I was offered the opportunity to work in the Emergency Department and there I have remained (Louisiana to California) until February of 2011.  I was fortunate to make the move to building and running a Level III, and as of May 2014 Level II ACS-COT verified trauma center at NorthBay Medical Center.

Previous Members of the Board

Many people have dedicated their time and energy to TMAC, which has made it the premiere organization for trauma professionals in the state of California.

Below are individuals who have most recently served on the Board of Directors

  • Desiree Thomas, RN, MSN, CCRN

    • President Elect, 2016
    • President, 2017
    • Immediate Past President, 2018
  • Katy Hadduck, RN, BSN, CFRN

    • Secretary, 2016-2017

  • Michelle Woodfall, MS, RN, CEN, CCRN

    • Treasurer, 2017-2018
  • Eileen Hoover, RN, MSN

    • Director-At-Large for Hospitals, 2016-2017

Susan Watson, BAcc
Executive Assistant

Susan Watson

Susan is currently the Financial Services Assistant and Executive Secretary for Mountain-Valley EMS Agency.  She received her Bachelor of Science in Accounting from the University of Phoenix.  Susan has a long work history in administrative duties, technical writing, information technology and accounting support.  She is a veteran of the U.S. Army, serving more than a decade both at home and abroad.  Over the course of her civilian work experience,  she has served city, county and federal government agencies as well as the private sector.  In her leisure time, Susan enjoys caring for her home and family, spending quality time with her grandchildren, and devoting volunteer hours to service within the local community.