About WMMC

Western Missouri Medical Center

About WMMC

Want to learn more about Western Missouri Medical Center (WMMC)? WMMC is a fully-accredited acute care facility located in Warrensburg, Missouri. As a not-for-profit, county medical center, WMMC offers comprehensive health care services to residents of Johnson County and west central Missouri.


Western Missouri Medical Center was founded on July 31, 1963, as Johnson County Memorial Hospital. After over 20 years of expansion and growth, JCMH became Western Missouri Medical Center on January 1, 1986.

In the years since, Western Missouri Medical Center has continued to expand our services and bring many new specialties to Johnson County allowing area residents to receive quality care closer to home. Check out more of our history here!

Hospital History


Mission + Values

WMMC’s mission is to improve the health of our greater community by providing quality healthcare services, exceeding the expectations of those we serve.

Our vision is to be the regional preferred provider of exceptional health care services.

STARR Program



cares enough to do his / her best



works with others to accomplish great things



makes decisions and accepts the consequences



treats others with dignity



creating a positive work environment

Western Missouri Medical Center is proud to have staff, providers, and volunteers who live through our values, recognized by the STARR program. To nominate a staff member, provider or volunteer that displays these values through their work, please fill out the form here.

STARR Nomination Form

Western Missouri Medical Center Thanks our Board of Trustees for Their Dedication and Service to Our medical Center and Greater Community.

Photographed left to right: Larry Purcell, DDS, Treasurer; Liz Fatka, Secretary; Sue Hook, Trustee; Rita White, Vice Chair; and Greg Hassler, Chair.

Darinda J. Reberry, MSN, RN
President/Chief Executive Officer

Darinda was named President/CEO by the WMMC Board of Trustees on Feb. 26, 2016.

She joined WMMC as Vice President of Patient Care Services/Chief Nursing Officer (CNO) in October 2013. During her tenure as CNO, she successfully led efforts for WMMC receiving national certifications through The Joint Commission in Normal Delivery and Bariatric Surgery by the Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program. In addition, Darinda led numerous initiatives to improve patient satisfaction and financial stability.

With over 20 years of diverse clinical nursing experience and proven success at leading and transitioning cultural change, Darinda has served in a variety of leadership capacities at healthcare facilities including HCA Research Medical Center in Kansas City, MO; Truman Medical Center Lakewood in Kansas City, MO; and St. Joseph’s Medical Center in Kansas City, MO.

Darinda earned her Bachelor of Science in Nursing at the University of Central Missouri and her Master’s of Science in Executive Nursing Leadership from Webster University.

Dean Ohmart-CFO
Dean Ohmart
Vice President of Financial Services/Chief Financial Officer

Dean Ohmart was named WMMC’s Vice President of Financial Services/Chief Financial Officer in June 2017.

With over thirty-five years of progressive accounting experience in multi-site locations, Dean has held various leadership roles throughout his career. Prior to WMMC, Dean worked with Coffeyville Regional Medical Center as CFO in 2014 – 2017. Prior to that role, Dean was the CFO at Ransom Memorial Hospital (RMH) and ended the last 10 years of his 13-year career there with over $2 million dollars in Operations Profit. With Dean’s leadership and expertise, RMH received over $10,000,000 in Medicaid DSH payments. Furthermore, the Accounts Receivable was reduced from over 100 days to less than 60 days and the hospital operated with no-long term debt. Dean graduated Summa Cum Laude from Fort Hays State University where he earned his Bachelors of Science in Business Administration.

Dean has a passion for developing the financial capabilities of the hospital leaders to garner overall financial success for organizations. His leadership, passion and financial experience will prove to be an asset to our medical center’s mission and vision.

Jennifer Koepke-CNO
Jennifer Koepke, RN, MHSA
Vice President of Patient Care Services/Chief Nursing Officer

Jennifer Koepke was named Vice President of Patient Care Services/Chief Nursing Officer in March 2016.

Jennifer has been a part of the WMMC team since February 2005, with a stellar record of leadership and quality improvement initiatives. She has served in many leadership capacities within the medical center, including Director of Quality/Risk Management, Quality Pillar Council Chair and Interim Chief Nursing Officer from September 2015 – March 2016.

Jennifer has over 20 years of clinical experience and has served in a variety of leadership capacities, including St. Mary’s Medical Center in Russellville, AR; and Conway Regional Medical Center in Conway, AR. Her career includes nursing experience in Surgical, Cardiac and Critical Care as well as Quality Risk Management in healthcare.

Jennifer earned her Bachelor of Science in Nursing from the University of Central Arkansas in Conway, AR, and a Master in Health Services Administration from the University of Arkansas at Little Rock. She has been a Certified Professional of Healthcare Quality since 2004.

Renee Twenter-ambulatory-services-executive
Renee Twenter, RN, MBA
Ambulatory Services and Outreach Executive

Renee Twenter has been appointed to the role of Ambulatory Services and Outreach Executive as of December 2016.

Renee joined WMMC in 1997 and advanced to the role of Director of Obstetrics in 2001. In 2015, Renee was named the Women’s and Children’s Service Line Director, overseeing Obstetrics, Western Missouri Women’s Health Center and Building Blocks Pediatrics. Renee has extensive experience as a quality-driven leader with 25 years of progressive experience leading and transitioning healthcare units, including coordinating the merger of Family Practice Associates with WMMC.

Renee received her Bachelor of Science in Nursing from the University of Central Missouri in Warrensburg, MO, and her Master of Business Administration from William Woods University.