Glenn Wallace, CPA

Chief Executive Officer of Medical City Alliance

Glenn Wallace

Wallace assumed his leadership role at Medical City Alliance in January 2014. He brings more than 25 years of experience in the health care field, and has served HCA in financial positions at several other locations.

He came to Alliance from Medical City Plano, where he was the chief operating officer. Prior to that, he served as the chief financial officer and chief operating officer at Medical City North Hills. He also was the chief financial officer at Medical City Las Colinas and controller at Plaza Medical Center and Medical City Arlington.

Throughout his career with HCA, Wallace has overseen significant hospital growth including opening Medical City Las Colinas and overseeing major expansion projects at both Medical City Plano and Medical City North Hills.

Wallace earned his bachelor’s degree in business administration from Stephen F. Austin State University and his master’s degree in business administration from Texas Christian University.


Dean Miller, MBA, MSN, RN

Chief Nursing Officer of Medical City Alliance

Dean Miller

Dean Miller serves as the Chief Nursing Officer at Medical City Alliance. Dean has more than 10 years of healthcare leadership experience with HCA Healthcare and has served as the CNO at Medical City Alliance for nearly three years. In his role as CNO, he has contributed to the growth of services and recognition of critical service lines. Under his leadership, the hospital has achieved multiple accreditations including Chest Pain Level 5 with PCI, a Leapfrog score of “A”, State of Texas Level III NICU designation, Level III Trauma designation, and many others. Miller believes in empowering the frontline staff through a shared governance structure to promote research and disseminate evidence-based patient care.

As a Registered Nurse with 16 years in healthcare, Miller brings a strong background in developing service lines, establishing patient, physician, and employee relationships, and new hospital and emergency room construction. Miller joined Medical City Healthcare in 2010 as Director of ICU at Medical City Arlington and has also served as associate vice president of critical care services and associate chief nursing officer at Medical City Denton. Before joining Medical City Healthcare, Miller worked at University Medical Center in Lubbock, Texas.

Miller graduated from Texas Tech Health Sciences with a BSN in 2005 and later an MSN in 2010.  He also earned his MBA from Western Governors University in 2019 and is a graduate of the HCA Executive Development Program. 

Miller serves the local community as well, serving on the Northwest Education Foundation Board of Trustees, an organization dedicated to raising and awarding funds to teachers for use in the classroom.  He is married to his wife Whitney, who shares his same passion for healthcare as a family nurse practitioner, and they have two children, Ava and Beau.

Jamie Gibbs

Chief Financial Officer of Medical City Alliance

Jamie Gibbs

Jamie Gibbs joined the Medical City Alliance leadership team in March 2021, after serving as the vice president of finance over both Medical City Arlington and Medical City North Hills. During her tenure, she had oversight of accounting, financial reporting, revenue integrity, patient access, supply chain and asset management for both facilities.

Prior to serving in this role, Gibbs the assistant controller, and later, the controller, for both facilities. Before joining Medical City Healthcare, she worked in San Antonio for the HCA/Parallon Shared Services Center as the government logging manager, the payment compliance director and finally as the controller.

Gibbs was a double major in Business Administration and Psychology at St. Edwards University in Austin, Texas. She is currently working on a Master's in Business Administration from A&M University-Commerce. She married her high school sweetheart, Brandon, and they have a daughter.