Steve Kros, MBA
Chief Executive Officer
Kros joined OneHealth in May 2017. He previously served in a variety of executive management positions in finance, strategic planning and mergers and acquisitions with First Data Corporation and West Corporation. Kros received his master’s and bachelor’s degrees in business administration from the University of Nebraska.
Bob Rauner, MD, MPH
Chief Medical Officer
Dr. Rauner joined OneHealth in January 2017. He previously was Chief Medical Officer for SERPA ACO in Nebraska, served on the faculty of the Lincoln Family Medicine Program and was a family doctor is in his hometown of Sidney, Nebraska. Dr. Rauner has a master’s degree in public health from Johns Hopkins University and is a graduate of the University of Nebraska Medical Center College of Medicine and Creighton University.
Brandon Webb, MD
Dr. Webb joined OneHealth in January of 2022. In addition to his OneHealth role, Dr. Webb is a practicing partner at South Lincoln Family Physicians and has privileges at St. Elizabeth Hospital and Bryan Health System in Lincoln, Nebraska. Dr. Webb is board-certified in Family Medicine and holds medical licenses in Nebraska and Texas. Dr. Webb is a graduate of Baylor University with a Bachelor of Science degree and received his Doctor of Medicine degree from the University of Texas at Houston Medical School. Before moving to Nebraska, Dr. Webb served as chief resident and completed his residency at Memorial Hermann Hospital Southwest in Houston, Texas.
Donna Mertz, LPN, CPC
Vice President of Clinical Integration
Mertz joined OneHealth in June 2017. She is a Licensed Practical Nurse and a Certified Professional Coder. Mertz previously served in a variety of senior management roles at CHI St. Elizabeth’s, most recently as the Director of Operations for The Physicians Network.
Rhiannon Marshall, MBA
Vice President of Finance and Operations
Marshall joined OneHealth in August 2017. She previously worked in a variety of finance and accounting positions at Rockwell Collins. Marshall received her master’s and bachelor’s degrees in business administration from the University of Iowa.
- OneHealth Nebraska
- 4600 Valley Road, Suite 400
- Lincoln NE 68510
An independent physicians association dedicated to supporting and growing independent medicine in Lincoln, Grand Island, Crete, Auburn, Hastings, Bellevue, Holdrege and Kearney.