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We are located at:

Arizona Map The Lingenfelter Center
1099 Sunrise Avenue
Kingman, Arizona 86401
(928) 718-4852

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Management & Team

Kristen Ott


Kristen Ott is the Administrator at The Lingenfelter Center (TLC). In 2005 she graduated from Arizona State University with a Bachelors Degree in Business Administration. After graduation, she began her career at The Lingenfelter Center with administrative duties.

After working for the company for several years and realizing her passion to provide excellent care for those in her community, Kristen Ott went through the Administrator in Training Program to obtain her Nursing Home Administrator License. In January 2011, Kristen Ott obtained her Nursing Home Administrator License and in April 2013, she took over as Administrator at The Lingenfelter Center.

Kristen Ott is proud to lead the wonderful staff at The Lingenfelter Center and is pleased to be able to make a difference in her community. The dynamic team of employees is what has made The Lingenfelter Center one of the Top 100 Nursing Homes in the U.S. in 2010, 2013, 2014, 2015 and 2016. (U.S. News and World Report).

Keith Sterrenberg

Director of Nursing

Keith Sterrenberg is the Director of Nursing at The Lingenfelter Center (TLC).  In 1993, he graduated from Trevecca Nazarene University with a Master of Arts degree in Organizational Management.  He began his career in manufacturing as a Quality Assurance Analyst with UST, which lasted almost fifteen years.  In 2001 Keith made a change in careers to Nursing when his mother was diagnosed with Dementia/Alzheimer’s.  Keith began as a Certified Nursing Assistant for several years working at Vanderbilt Stallworth Rehabilitation Hospital in Nashville, Tennessee. 

Keith continued his education in nursing and in 2003 Keith became licensed as a Licensed Practical Nurse and worked for various Long-Term care facilities in Tennessee.  Keith moved to Arizona in 2010 and studied at Mohave Community College where he earned his RN degree in Nursing.  Keith worked for Havasu Nursing Center as an MDS Coordinator/ Assistant to the Director of Nursing for several years.  In 2013, Keith accepted a position with Havasu Regional Medical Center and was instrumental in the opening of a new 19-bed Skilled Nursing Unit (SNU).  During the first year of operations the SNU achieved a Five Star status.  In 2015 Keith received a Masters’ degree in Health Care Administration from The University of Phoenix. 

Keith is now proud to be part of The Lingenfelter Center (TLC) in leading an awesome group of employees to continued success in the care for residents with Dementia/Alzheimer’s and Behavioral Symptoms.

Stephanie Cobanovich

Admissions Coordinator
Social Services Director

Stephanie is the Admissions Coordinator as well as the Social Services Director for The Lingenfelter Center.  She is originally from Michigan and moved to Arizona in 1998.  Previously, Stephanie has worked as an X-ray technician and an underwriter for a title company.  She started at The Lingenfelter Center in the fall of 2016.

Stephanie is the proud mother of 2 children and enjoys spending time with them camping and riding in her free time.