Leadership.

Vision — Most Trusted Name in Health Care

When INTEGRIS decided to develop a vision statement for the organization, we wanted feedback from our most valuable commodity — our employees. More than 1,500 INTEGRIS employees were involved in discussions or surveys to develop our vision.

We feel it says a lot about who we are — we value trust as a guiding principle — and we aspire to be recognized for that. It is a big vision, but it is also a very personal one. From front-line to physician, from management to medicine, each of our employees can, and must, resolve to be the "most-trusted" in our given areas of responsibility, day-in and day-out. It is a commitment to one another as well.

Timothy Pehrson

President and Chief Executive Officer, INTEGRIS Health

Timothy Pehrson is the President and Chief Executive Officer of INTEGRIS, Oklahoma’s largest health care system.  

Timothy Pehrson is the President and Chief Executive Officer of INTEGRIS, Oklahoma’s largest health care system.

As President and Chief Executive Officer of INTEGRIS Health, Timothy Pehrson is responsible for leading all aspects of the health system. Pehrson joined INTEGRIS in August 2018 after an accomplished and distinguished career at Intermountain Healthcare. Pehrson brought to INTEGRIS a profound understanding of today's health care industry and its challenges, and more importantly, insights into areas of opportunity for sustainability, affordability, value, and even greater success. Pehrson, a system’s thinker with deep knowledge in how to improve value in health care, has been focused on transforming health care in Oklahoma. The key to that transformation is engaging caregivers in continuously improving the care provided at INTEGRIS. He successfully introduced and implemented the INTEGRIS Leadership Operating System (iLOS) across the system, which is an operating model used to drive caregiver engagement in continuous improvement. Under his leadership, the health system has experienced significant growth, including a hospital acquisition, a joint venture with groups that own and operate specialty hospitals, the opening of four community hospitals and an addiction and recovery treatment facility.

Prior to INTEGRIS, Pehrson served in a dual role as Regional Vice President/CEO for the North Region and Vice President of Continuous Improvement for Intermountain Healthcare. In his position as CEO of the North Region, he was the market leader of a five-hospital region in Utah and Idaho. Pehrson developed, piloted and applied strategies and initiatives in the North Region that were adopted throughout the enterprise. As Vice President of Continuous Improvement, Pehrson designed and implemented the system’s enterprise-wide continuous improvement effort, now called the Intermountain Operating Model, which resulted in a strong performance in safety, quality, patient experience, access, costs and growth. Under his Intermountain tenure, his hospitals were recognized 12 times as Truven 100 Top Hospitals, including the Everest Award, given to 17 hospitals across the country with the highest performance and fastest long-term growth over five years.

Pehrson graduated from Brigham Young University with a bachelor’s degree in history and received a Master of Health Services Administration from the University of Michigan.

Chris Hammes

Senior Vice President and Chief Operating Officer 

Chris Hammes is the Senior Vice President and Chief Operating Officer at INTEGRIS. Hammes joined INTEGRIS in 1990 as a radiology manager and moved into his current position in 2012. His responsibilities include oversight of operations for eight INTEGRIS-owned hospitals throughout Oklahoma as well as Lakeside Women’s Hospital and INTEGRIS Cancer Institute. Formerly, Hammes was Managing Director of the system’s metro facilities and President of INTEGRIS Baptist Medical Center. 

Hammes earned a Master of Science degree in Health Administration from the University of Oklahoma. He graduated from the University of Kansas with a Bachelor of Science degree in Allied Health Administration.

Hammes serves on the board of the Oklahoma Quality Foundation and the Oklahoma Hospital Association, and has formerly served as chair of the Greater Oklahoma City Hospital Council. Hammes mentors at Stanley Hupfeld Academy and participates in many community activities. He received the “Spirit of Innovation Award” from the Oklahoma Hospital Association. Hammes is a Fellow of the American College of Healthcare Executives and a Fellow of the Healthcare Advisory Board. 

Kerri Bayer

Senior Vice President and Chief Nurse Executive

Kerri Bayer is the Senior Vice President and Chief Nurse Executive of INTEGRIS.  She serves as the nursing executive in charge of leading the strategic direction for clinical services throughout the health system, including all clinical excellence, quality and patient safety objectives.

Bayer earned her Master of Science degree in Nursing from the University of Oklahoma and a Bachelor of Science degree in Nursing from the University of Central Oklahoma. 

Bayer has more than 20 years of INTEGRIS nursing experience. Her background includes front-line nursing in intensive care, regulatory compliance, quality, safety, nursing education and many clinical leadership roles within INTEGRIS. Bayer is a member of the American Association of Critical Care Nurses.

Allison Petersen

Senior Vice President and General Counsel

Allison Petersen, J.D., is the Senior Vice President and General Counsel at INTEGRIS. As General Counsel, Petersen provides strategic leadership across the organization, primarily with evaluation, mitigation and resolution of legal and compliance needs. Most recently, she was the senior consultant to the executive management team at INTEGRIS, as well as legal counsel to INTEGRIS since 2013.

A graduate of the University of Oklahoma College of Law and the University of Oklahoma Health Sciences Center School of Public Health, Petersen holds both a Juris Doctorate and Master of Science degree in Health Administration.

Petersen is active in community service and is currently serving as a trustee appointed by the mayor of Oklahoma City on the Emergency Medical Services Authority, Oklahoma’s largest pre-hospital emergency medical service provider.

Mike Hatch

Senior Vice President and Chief Strategy and Transformation Officer 

Mike Hatch is the Senior Vice President and Chief Strategy and Transformation Officer at INTEGRIS. His responsibilities include strategic planning and forecasting, market intelligence and positioning, and growth and development.

Hatch graduated from Brigham Young University with both a Master of Business Administration degree and a Bachelor of Science degree. Prior to joining INTEGRIS, he worked for Intermountain Healthcare for many years in various regional and system strategic planning roles.

Doug Smith

Senior Vice President and Chief Financial Officer

Doug Smith is the Senior Vice President and Chief Financial Officer of INTEGRIS. Smith has over 30 years of financial experience in health care. He comes to Oklahoma from Stanford Health Care, where he served as the Vice President of Finance.

Prior to his time at Stanford, Smith worked at Intermountain Healthcare for many years in various CFO capacities over 12 of Intermountain’s hospitals. Smith also has extensive finance experience working with Intermountain’s large medical group and health plan. He is a highly regarded, principle-based leader who couples a strong finance background with a deep commitment to mission-based health care.

Smith earned a Master of Business Administration degree and a Bachelor of Arts degree in Economics from Brigham Young University.

Wendy Chandler

Senior Vice President and Chief Human Resources Officer

Wendy Chandler is the Senior Vice President and Chief Human Resources Officer at INTEGRIS. She joined INTEGRIS in October 2019.
 
Chandler comes to Oklahoma from CHRISTUS Health, where she held a long and exceptional career in multiple human resources leadership roles since 1999. That health system employs a staff of 45,000, with over 15,000 physicians providing care.
 
Most recently, Chandler served as the Group Vice President, Human Resources, with oversight of acute ministries in Northeast Texas, Southeast Texas and Louisiana. Chandler has extensive experience in strategic planning, organizational transformation and all areas of human resources, including workforce management, employee engagement, leadership development and innovative staffing models. 
 
Chandler earned her Master of Business Administration degree from Texas A&M University and her undergraduate degree from Louisiana Tech University.

Carl Raczkowski, M.D.

President, INTEGRIS Health Partners

Carl Raczkowski, M.D., is President of INTEGRIS Health Partners. Dr. Raczkowski manages a network of 1,000+ physicians organized into a clinically integrated network. The concept of the clinically integrated network allows the independent physician, the employed physician, and INTEGRIS to work together to provide the best possible outcomes for patients.

Dr. Raczkowski is board certified in gastroenterology and has completed extensive training in the diagnosis and treatment of disorders of the esophagus, stomach, small intestine, colon, liver and gallbladder. He has been in private practice with Digestive Disease Specialists, Inc., since 1997.

A native of Tulsa, Dr. Raczkowski attended medical school at the University of Oklahoma College of Medicine. He completed his residency in internal medicine and his clinical fellowship in gastroenterology at the University of Oklahoma Health Sciences Center. He received his undergraduate degree from Northeastern State University in Tahlequah, Oklahoma. 

Dr. Raczkowski is a member of the American College of Gastroenterology, the American Gastroenterological Association, the Arkansas/Oklahoma Endoscopy Society and the Oklahoma State Medical Association.

Jeff Cruzan, M.D.

President, INTEGRIS Medical Group 

Jeffrey B. Cruzan, M.D., is a board certified family medicine physician and is Chief Medical Officer, INTEGRIS Medical Group.

Cruzan is originally from Picher, Oklahoma. He graduated from the University of Oklahoma in 1982 with a Bachelor of Science degree in Zoology and from the University of Oklahoma College of Medicine in 1985. He completed his residency in 1988, serving as chief resident during his final year. He has been practicing medicine for more than 25 years and has a passion for preventive health care.

R. Mel Clark, M.D.

President, INTEGRIS Heart Hospital

Mel Clark, M.D., is an interventional cardiologist and president of INTEGRIS Cardiovascular Physicians at INTEGRIS Heart Hospital in Oklahoma City.

He attended medical school at the University of Oklahoma Health Sciences Center in Oklahoma City, where he completed his internship, residency and fellowship. Dr. Clark is board certified in both internal medicine and cardiovascular disease and was named one of the "Best Doctors in America" in 2007.

He is a member of the Jim Thorpe Association Executive Council and the Council on Cardiac Sonography, and is a Fellow of the American College of Cardiology. Dr. Clark has served on the Board of Directors for the INTEGRIS Health System, Oklahoma Health System and Plains Medical Association.