Our team


CDI’s highly experienced team provides creative customized solutions for unique dialysis needs in the most difficult of clinical settings.

Jason Combs

President & CEO

Prior to his time with CharDonnay Dialysis and CDI Health, Jason worked in finance where he provided private equity and private debt placements with Prudential Capital Group. While at PCG he gained valuable experience in acquisitions, dispositions, deal and client sourcing, complex deal structuring, contract negotiations, high-level operational strategy and financial analysis.

In 2016, he joined CharDonnay Dialysis as a Vice President and oversaw the company’s finances; assisted with corporate strategy; maintained operational oversight of all clinical staff;  and led contracting and pricing. In 2018, Jason was promoted to President of CharDonnay Dialysis where his responsiblities expanded to include management of the executive team and oversight of all back office support departments.  By early 2019, Jason transitioned to CDI Health, a newly formed carve-out of CharDonnay Dialysis, heading up the focus on dialysis services in non-correctional settings such as acute and skilled nursing facilities.

Jason holds a BBA in finance and accounting with a concentration in pre-medicine from the McCombs School of Business at the University of Texas at Austin. He lives in Austin, Texas with his wife Jaclyn, and enjoys spending his free time golfing, snow skiing, and exploring the Austin culinary scene.

Christian Catron, MBA

Vice President of Business Development

Christian began his career as an Officer in the U.S. Army. Upon his transition to the civilian sector, Christian pursued various roles in sales, project management, operations, and business development, all within the healthcare space.

Christian has worked in multiple facets of the healthcare industry including pharmaceutical, medical device, managed care, physician services, and dialysis services. He previously led business units with $50M P&L responsibility and 500 employees. Christian is responsible for the strategic growth of CDI Health through new client partnerships across all of CDI’s service offerings.

He is a graduate of the United States Military Academy at West Point, New York, where he earned a Bachelor of Science degree in general management. He later continued his education at the University of Texas at Austin’s McCombs School of Business, earning an MBA degree. Christian lives in Austin with his wife and 2 sons. He enjoys sports, church, and real estate investing.

Tracy Reynolds

Vice President of Skilled Nursing Facility Services

Tracy has over ten years of healthcare experience of which nine were in home dialysis. Tracy helped develop one of the largest CKD patient education programs in the nation and provided high-level oversight to home dialysis programs spanning across seven states.

Tracy's career experience also extends to auto accident reconstruction and complex injury analysis. Tracy is focused on partnering with skilled nursing facilities across the nation providing a long overdue unique and new approach to dialysis for those dialysis patients in skilled nursing facilities.

Tracy currently resides in San Antonio, Texas with her three children. She and her family enjoy water skiing on the lakes of central Texas along with quick getaways to the mountains for snow skiing during winter months.

Zach Zapinsky, CPA


Zach joined the CDI Health team in early 2019. As Controller, he oversees the accounting, financial planning and analysis, tax, and treasury functions at both CharDonnay Dialysis and CDI Health. Prior to joining CDI Health, Zach was controller for Easy Tiger Bake Shop.

He began his career at FKSP, PLLC, a small tax consulting and accounting firm, specializing in federal and multi-state tax compliance for high net-worth individuals and entities.

Zach holds a bachelor’s degree in Business Administration and a master’s degree in Professional Accounting from the McCombs School of Business at the University of Texas at Austin. Zach is a licensed certified public accountant in the state of Texas. He lives in Austin, Texas with his fiancé Lindsay, and enjoys spending time at Zilker park with his dog Reece.

Stacy Vice, RN, BSN

National Director of Clinical Quality and Implementation

Stacy joined Chardonnay Dialysis-CDI Health in 2005 and has served as Regional Director, Interim Human Resources Liaison, and Implementation Director. Stacy has 20 years of experience in dialysis nursing and leadership.

Stacy is responsible for implementing contracts throughout the correctional, acute, and skilled nursing home settings.  In this role, Stacy is a leader in site inspection, educational provisioning, contract review, project management, equipment and supply sourcing, clinical expertise, community outreach, and sales support. 

Prior to her current role, Stacy served as Regional Director with clinical and operational oversight of hemodialysis facilities within correctional and acute settings. 

Stacy earned her Bachelor of Science in Nursing from Lakeview College of Nursing in Danville, IL.  She began her career in the acute setting and went onto an outpatient dialysis clinic before starting her tenure with CharDonnay Dialysis – CDI Health.   

Stacy currently resides in central Illinois with her husband Michael and daughter Beth.  When not attending her daughter’s sporting events or visiting her grown sons,  she enjoys vintage camping, antiquing, and spending time outdoors. 

Heather Paradis

National Director of Biomedical Services

Heather brings over 20 years of dialysis experience, including 15 years in technical leadership.   She began her dialysis career in patient care and biomedical roles.  She is active in the industry having served on multiple boards including NKF and two terms as President of National Association of Nephrology Technicians/Technologists. She has co-authored several dialysis manuals, including the Core Curriculum for Dialysis Technicians and the Water Treatment for Dialysis manuals. 

Prior to joining CDI Health, Heather served as National Director of Biomedical Services and Corporate Director of Biomedical Support Services for nationally based dialysis companies. She has extensive experience in technical operations, policy and procedure development, equipment usage and maintenance for home, in-center, and inpatient modalities.  She has implemented technical oversight and structure for dialysis programs throughout the United States.

Heather currently resides in Idaho and enjoys time in her mountain home with her family and many pets.  She is actively involved with the sport of rodeo where both her son and daughter compete. 

Sue Rodriguez, SHRM-CP, PHR

Human Resources Director

Sue joined the CDI Health team in April 2020. Her Human Resources career spans over 20 years, where she worked in the healthcare sector as an HR Director and Business Partner.

She holds a Bachelor of Science degree in education and has earned the Human Resource designation of both SHRM-CP and PHR. She is a current member of the National Society for Human Resource Management, and a former member of both the Williamson County Human Resource Management Association and the Austin Human Resource Management Association.  

Originally from Wisconsin, Sue relocated to Austin after her college days where she met her husband. Sue has two adult children and four wonderful grandchildren with whom she and her husband enjoy spending time. Whenever possible, you’ll find Sue on the golf course, attending U.T. volleyball matches, traveling, or spending time with family and friends.