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.

The list of current members is available in the Members Only section of the website.

2021-2024 Board of Directors

Christine McGahey, RN, BSN

Christine McGahey

Christine McGahey brings over 18 years of experience in patient focused care specializing in nursing leadership in Emergency, Neurosurgery, Orthopedics and Trauma. She has worked at Kaiser Permanente, an Adult Level II Trauma Center in South Sacramento, California for the past 3 1/2 years as the Trauma Program Director. Christine has a strong background in developing and implementing policy and procedures with proven success in the implementation of organizational strategies. She received her Bachelors of Science Degree in Nursing from Western Governors University and is currently finishing up her Masters of Science in Nursing Leadership. Christine spent many years working as an adjunct Nursing Instructor where she was named Preceptor of the Year by the University of the Pacific.

Crystal Walsh, BSN

Crystal Walsh

Crystal is an experienced trauma program manager for Mercy Medical Center Redding, a Level II trauma center.  She has consistently shown her leadership and teamwork and will bring a unique perspective and varied experience to this role.  In her present role as TMAC Director at Large - Hospital, Crystal has worked tirelessly to improve member participation. She is collaborative, has a passion for this organization, and with her knowledge and experience she will advance TMAC as a positive and growing organization. 

Ashwini Chand-Kumar, RN, BSN, MBA

Ashwini Chand-Kumar

Professional Summary:  Director of an ACS verified level II trauma center.  Nursing Director of Interventional Radiology. As the TPM had two successful reverification visit with no process improvement related findings.  Extensive knowledge of hospital budget and finances. Proven leader with high level of process improvement, data management, performance metrics, staff development and retention experience. Strategic thinker with an ability to create feasible plans for improvements and to devise appropriate implementation strategies.  

Melissa Harte, DNP, MSHA, RN, TCRN

Melissa Harte

Melissa Harte has spent the majority of her career in Emergency Medicine and Trauma.  She recently joined Regional Medical Center, San Jose as the Vice President of Trauma Services.  Since 2007, Melissa has served as a Liaison, Board Member, and President of the Society of Trauma Nurses.  Her current roles for STN are: Liaison for TCRN Review; Leadership Committee Member; Faculty Lead for Leadership Institute 2020; and Pediatric Trauma Nursing Curriculum Peer Reviewer. 

Director at Large for Hospitals

Loreen Gutierrez, RN
Director at Large for EMS

Immediate Past President

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

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

    • President Elect, 2019
    • President, 2020
    • Immediate Past President, 2021
  • Wendy McEuen, MSN, RN

    • Treasurer, 2019-2020
  • Shanna Kissell, RN

    • Director-At-Large for Hospitals, 2020-2021

Susan Watson, BAcc
Executive Assistant

Susan Watson

Susan is currently the Financial Services Assistant and Executive Secretary for Mountain Counties 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, spending quality time with her family and friends, and devoting volunteer hours to service within the local community.