Donna Combs

Donna is a very motivated medical professional who holds separate degrees in nursing (BSN) and Business and Health Services Administration. She has over 36 years of experience as a registered nurse with a strong background in critical care and management. Donna has spent the last 32 years dedicated to the improvement and delivery of End Stage Renal Disease services, serving in different capacities before founding CharDonnay Dialysis in 1994. As the Health Services Administrator for BMA in California, the need to provide onsite Inmate Dialysis Treatment Services at Santa Rita County Jail was recognized and shortly thereafter CharDonnay Dialysis was formed. Over the last 26 years, CharDonnay has successfully provided Correctional Dialysis Services to over 65 different correctional facilities across the country. CDI has been a women-owned business since inception with Donna Combs-Williamson as the founder, majority owner, and CEO.

Donna has had personal involvement with the transition and execution of each contract held by the company, developing numerous proposals, building teams, advocating for clinical improvement, ensuring contractual compliance, resolving operational issues, and achieving client satisfaction through consistently great service.

Donna resides in Austin, Texas with her youngest two of five children. Donna enjoys spending time with her family (including the addition of her 3 new grandchildren), working out, traveling, trying great food, and reading good books.

Jason Combs

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.

Joe Burke

Joe joined Chardonnay Dialysis in 2009 as the Vice president of Corrections. With over eleven years of experience in the correctional setting, Joe has overseen operations to include: Customer Relations, Staff Development, Supply Chain Management, and Oversight of County, State, and Federal contracts.

Joe began his career in retail operations then transitioned to banking with an emphasis on customer service and relations management for high net worth clients. Joe is dedicated to delivering positive results while always maintaining the highest integrity. Joe currently resides in central Illinois. He enjoys staying active as well as physical fitness.

Zach Zapinsky

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

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. 



Sue Rodriguez

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.