Leadership

Juan Fresquez, MBA
President

Juan Fresquez Jr., MBA, is a distinguished figure in healthcare leadership and civic engagement, currently serving as President of Methodist Mansfield Medical Center within the Methodist Health System. With a wealth of experience spanning over three decades in acute care hospital management, Juan has honed his expertise in operations, leadership, physician relations, cost management, quality and process improvement, compliance, clinical quality management, and customer service.

Under his guidance, Methodist Mansfield attained the esteemed 5-Star rating from the Centers for Medicare & Medicaid Services in 2020. Notably, Juan played a pivotal role in the inauguration of Methodist's first de novo ambulatory surgery center on the Methodist Mansfield campus in August 2020. Additionally, he assumed the presidency of Methodist Midlothian Medical Center upon its establishment in November 2020.

Prior to his tenure with the Methodist Health System, Juan held key executive roles with Tenet Healthcare, where he significantly enhanced patient satisfaction, quality of care, and financial performance in both the Texas and Arizona markets.

Beyond his professional accomplishments, Juan is deeply committed to his family, having been happily married to his wife, Carla, for 35 years and raising three accomplished children together. He is an active participant in the Mansfield community, dedicating his time and expertise to various chambers, economic development, and community boards.

Juan has always been committed to serving his community and promoting public welfare. In May 2024, he will take his dedication to the next level by being sworn in as the Mansfield City Councilman Place 4. His decision to join the council is a testament to his unwavering commitment to improving the quality of life for all residents of Mansfield. Through his compassionate leadership and civic responsibility, Juan hopes to make a positive impact on his community and serve as a role model for others to follow.

L. Stephen Foster, DO, CPE
Chief Medical Officer

L. Stephen Foster D.O., CPE, is Methodist Mansfield’s Chief Medical Officer (CMO) and has served in that position since April 2016. Dr. Foster has been practicing medicine for 27 years, the last 22 years as an anesthesiologist. He has served in multiple leadership positions at the hospital since it opened in 2006. As CMO Dr. Foster works jointly with the administrative team, the medical staff, and hospital staff to continually advance the services offered at the hospital and ensure the quality of care provided to patients and their families.

Dr. Foster was a Registered Pharmacist for nine years before attending and graduating from the University of North Texas Health Science Center at Fort Worth with his medical degree. He then completed a Family Medicine Residency at John Peter Smith (JPS) Hospital in Fort Worth, Texas, and two years later began his anesthesia residency at the University of Texas Southwestern Health Science Center in Dallas, Texas, which he completed in 2002.

In addition to his role as CMO, Dr. Foster has served as the Director of Anesthesia Services, Chair of the Department of Surgery, and President of the Medical Staff. He is currently a member of the Mansfield Quality Council, a member of the hospital’s Advisory Board, and a member of the Methodist Health System Medical Board.

Dr. Foster is a member of the American Society of Anesthesiologists and the American Association for Physician Leadership.

Crystal Brown
Vice President of Operations

Crystal Brown joined Methodist Mansfield in September 2022 as vice president of operations. 

Brown has more than 21 years of healthcare leadership experience, having served in experience, serving in operations, human resources, supply chain, strategic planning, and business development across a number of hospitals in Texas.

Before joining Methodist Mansfield, Crystal served as Director of Operations for Baylor Scott and White Heart Hospitals in Plano, Denton, and McKinney.

She has a bachelor’s degree in Business Administration and Management from Northwood University and a Master of Business Administration from Texas Woman’s University. She is a member of the American College of Healthcare Executives (ACHE) and also serves on the Diversity, Equity, and Inclusion corporate council committee for the Girl Scouts of Northeast Texas.

She has received several awards during her 21-year tenure and has a record for improving employee engagement and hospital operations.

Faustino Flores
Vice President of Finance

Faustino Flores is Vice President of Finance for Methodist Mansfield Medical Center, a 262-bed non-profit acute care hospital with more than 1,000 employees and 200 physicians. He is responsible for hospital financial management, productivity, capital and growth planning, and the operating budget. Additionally, he serves as the Compliance Officer for Methodist Mansfield.

Flores is a native Texan and a Bachelor of Business Administration graduate of The University of Texas at El Paso. His professional career includes more than 32 years of financial management, including 9 years with Tenet Healthcare at the Hospitals of Providence in El Paso, Texas, and most recently serving as Market CFO/ACFO for the Carondelet Hospitals in Tenet’s Tucson Market.

Melissa Winans, DNP, MBA, RN, NEA-BC, FACHE
Vice President of Nursing, Chief Nursing Officer

Methodist Mansfield Medical Center is proud to welcome Melissa Winans, DNP, MBA, RN, NEA-BC, FACHE, as Vice President of Nursing and Chief Nursing Officer, effective April 20, 2026.

Melissa brings more than 30 years of nursing experience to the hospital, including over a decade of service as a Chief Nursing Officer in both community and academic healthcare settings. Her leadership background spans women and infant services, critical care, stroke care, and inpatient rehabilitation, reflecting a strong clinical foundation paired with executive expertise.

Known for her visible and collaborative leadership style, Melissa is deeply committed to fostering high-performing teams grounded in trust, accountability, and professional nursing practice. She is passionate about developing future nurse leaders, advancing workforce innovation, and partnering with physicians and interdisciplinary teams to enhance care delivery and improve patient outcomes.

Melissa holds a Doctor of Nursing Practice and a Master of Business Administration in Healthcare Management. She is board-certified as a Nurse Executive Advanced and is a Fellow of the American College of Healthcare Executives.

Beyond her professional accomplishments, Melissa values time with her family and enjoys quilting and spending time with her dogs.