Executive Team

Executive Team 2018-06-11T14:28:58+00:00

Executive Management Team

Chief Executive OfficerSteve Dietlin
Chief Operating OfficerScott Livingstone
Chief Financial OfficerRay Rivas
Chief Nurse Executive/Chief Clinical OfficerSharon Schultz, MSN, RN, MPH, NE-BC
Chief Compliance OfficerCarlos Cruz, JD, MHA
Chief Government & External Affairs OfficerAaron Byzak, MBA, FACHE
Chief Development Officer – Tri-City Medical Center; President – Tri-City Hospital FoundationGlen Newhart, MBA, CFRE
Vice President of Human ResourcesEsther Beverly, MSHR, SPHR, SHRM-SC

steve dietlinSteve Dietlin – Chief Executive Officer

Mr. Dietlin joined Tri-City Medical Center as the Chief Financial Officer in February 2013 and was then promoted to Chief Executive Officer in March of 2016. Since his arrival at Tri-City, he has navigated the financial pressures created by federal health care reform as well as those he inherited when he stepped into his role and led the fiscal ’14 financial turnaround. Mr. Dietlin previously served as an executive and a consultant to multiple public, private and not for profit healthcare systems and facilities, and has over 25 years of healthcare financial and operational management experience. As a healthcare executive, Mr. Dietlin has extensive experience leading strategic planning and operations, acquisitions, expansions, affiliations, feasibility studies, turnarounds and community involvement. He began his career as a healthcare audit specialist with Ernst & Young and is a CA Licensed Certified Public Accountant.

Scott Livingstone – Chief Operating Officer

Scott Livingstone is currently the Chief Operations Officer of Tri- City Medical Center.  Scott  joined the Tri-City Medical Center Team in August, 2010 and has held many leadership roles; from the Director of Case Management to the VP of Hospital Transformation to our Interim Chief Compliance Officer; providing leadership and direction to the Medical Center’s Case Management and population health initiatives, which includes our PRIME Projects.  Scott began his career in healthcare in the US Navy as Hospital Corpsman and he completed his nursing education while serving in the Massachusetts Army National Guard. Throughout his nursing career, Scott has worked in many clinical areas – from critical care to trauma and burn unit nursing to case management.  And he has held leadership roles in Case Management, Risk Management & Compliance.

Livingstone completed his undergraduate studies at University of Massachusetts, Amherst, graduating with a BSN and is a graduate of Massachusetts School of Law where he earned a Juris Doctorate.

ray rivasRay Rivas – Chief Financial Officer

Ray Rivas joined Tri-City Medical Center in 2012 as Senior Director of Revenue Cycle Integrity and in March 2016 assumed the position of Chief Financial Officer (CFO).

Rivas has a finance background that includes over 25 years in the healthcare sector with a proven track record of improving profitability and streamlining processes. During his time at Tri-City, Rivas has successfully led initiatives to improve cash collections and reduce patient registration waiting times. He was also an integral part of the team responsible for securing a $25 million line of credit for the hospital.

Rivas has held CFO roles at Suburban Medical Center in Paramount, Calif., Western Medical Center in Anaheim, Calif., and Chapman Medical Center in Orange, Calif. He has an MBA from Pepperdine University and is registered as a Certified Public Accountant with the State of California.

Sharon Schultz, MSN, RN, MPH, NE-BC – Chief Nurse Executive/Chief Clinical Officer

Sharon Schultz joined Tri-City Medical Center as the Chief Nursing Executive and Sr. Vice President in November of 2009. Prior to joining Tri-City, she was the Emergency Department Director at Scripps Mercy and Sr. Director for Patient Services at Tri-City Medical Center. Under Schultz’s leadership, the nursing staff has created a Professional Governance Council that meets monthly to design and implement improvements in nursing practice and the environment. Schultz has provided a supportive culture of nurse participation, physician collaboration, and patient safety.

In 2004, Schultz held many roles at hospitals in metropolitan Chicago, Ill., as a nursing leader in Emergency Services including President of the Illinois Emergency Nurses Association and Coordinator for the DuPage County Safe Kids Coalition. She provided management oversight to the building of a new emergency department for Advocate Good Samaritan and renovation of the West Suburban Emergency Department. Schultz has implemented many best practices over her career as both a staff nurse and leader in patient care. She currently resides in Oceanside with her husband, Jerry.

carlos cruzCarlos Cruz, JD, MHA – Chief Compliance Officer

Carlos Cruz joined Tri-City Medical Center in September, 2017, as the Chief Compliance Officer. He provides leadership and direction for Tri-City’s Compliance program. Prior to joining Tri-City, he served as the Chief Integrity Officer at Sinai Health System in Chicago, Illinois, Director of Compliance and Risk Management at Stanford Health in Palo Alto, California, and Compliance Officer at University of Washington Physicians in Seattle, Washington.

Cruz has extensive experience as a compliance professional with oversight in a wide variety of areas of compliance, including research, fraud and abuse, HIPAA Privacy and billing compliance. He earned a Doctor of Jurisprudence from the University of Florida and a Masters in Healthcare Administration from Seton Hall University. He holds a Certification in Healthcare Compliance from the Health Care Compliance Association.

Aaron Byzak, MBA, FACHE – Chief Government & External Affairs Officer 

Aaron Byzak joined Tri-City Medical Center as the Chief Government and External Affairs Officer in May 2018. In this role, Byzak is responsible for the healthcare district’s marketing, communications, government affairs, and community engagement activities.

For more than two decades, Byzak has served in positions of progressive leadership in Emergency Medical Services, health policy, health care management, and consulting. He has received numerous best practice awards and national recognitions for his leadership and work in health care, public health, advocacy, and communications including four Emmy Awards. Byzak was recognized by the Health Care Communicators of San Diego County with the Communicator of the Year Award in 2017.

Byzak is also founder and chief advocate of Hazel’s Army, a community advocacy and education group that in 2014 helped pass the most comprehensive assisted living reform agenda in California’s history.

He earned his Master of Business Administration in Health Care Management and policy from UC Irvine’s Merage School of Business and a Bachelor’s degree in Social Science from Chapman University. Additionally, Byzak earned certificates in leadership from Cornell University and UCLA’s Anderson School of Management. He is Board Certified in Health Care Management as a Fellow of the American College of Healthcare Executives (FACHE). Byzak resides in Vista with his family.

glenGlen Newhart, MBA, CFRE – Chief Development Officer – Tri-City Medical Center; President – Tri-City Hospital Foundation

Glen Newhart joined Tri-City Medical Center as Chief Development Officer in January 2014 and also serves as President of the Tri-City Hospital Foundation. Newhart earned an undergraduate degree in Business Administration (BBA) as well as a Master’s degree (MBA) in Healthcare Management. Newhart is also a Certified Fundraising Professional (CFRE) and brings more than 25 years of non-profit experience to his dual roles.

Starting in education, Newhart built comprehensive alumni, fundraising, and marketing/recruitment programs for several educational institutions in the West and South. Newhart then lead a team of staff, board members, and community volunteers to facilitate dramatic growth in fundraising-focused positions at hospitals in Montana and Arizona.

Newhart has long been involved as a volunteer for other non-profit organizations. Locally, he currently serves as a board member for the North County Philanthropy Council (NCPC) and nationally as part of the Membership Engagement Committee for the Association for Healthcare Philanthropy (AHP). Newhart previously served as Vice-President of the Oceanside Museum of Art and on the National Conference Education Advisory Committee for the Association of Fundraising Professionals (AFP).

In addition to his formal education and professional experience, Newhart was recognized by his peers in the Association of Fundraising Professionals (AFP) with an “Outstanding Fundraising Professional” award. Newhart currently resides in Oceanside with his family.