Our Staff

Wm. Kellar Winkelmeyer, M.D.

Dr. Winkelmeyer earned his medical degree at the University of Missouri-Columbia. He completed his post-doctoral training at the University of Missouri-Columbia and the Mayo Clinic in Rochester, Minnesota. Dr. Winkelmeyer is board certified in Internal Medicine and Nephrology and has been providing Nephrology care since 1986. Dr. Winkelmeyer currently sees patients in the Columbia, Moberly, Macon and Osage Beach offices.

Myra June Watson, D.O.

Dr. Watson earned her medical degree from Kirksville College of Osteopathic Medicine. She completed her residency training in Internal Medicine at Tulsa Regional Medical Center and her Fellowship in Nephrology at the University of Missouri-Columbia. Dr. Watson is board certified in Internal Medicine and Nephrology and has been providing Nephrology care since 2001. Dr. Watson currently sees patients in the Columbia, Mexico and Kirksville offices.

Blake Brooks, M.D.

Dr. Brooks earned his medical degree from the University of Missouri-Columbia. He also completed his training in Internal Medicine and Nephrology at the University of Missouri-Columbia. Dr. Brooks is board certified in Nephrology and has been providing Nephrology care since 2003. Dr. Brooks currently sees patients in the Columbia, Jefferson City, Marshall and Sedalia offices.

Leslie Hamlett, D.O., FACOI

Dr. Hamlett earned her medical degree from Kirksville College of Osteopathic Medicine. She completed her residency training in Internal Medicine at Oklahoma State University Medical Center in Tulsa, Oklahoma and her Fellowship in Nephrology at Oklahoma University Health Science Center in Oklahoma City, Oklahoma. Dr. Hamlett is Board Certified in Nephrology and has been providing Nephrology care since 2007. Dr. Hamlett will begin seeing patients in the Columbia and Macon offices in February 2024.

Leslie Prosser, FNP-C, CNN-NP

Leslie is a Board Certified Nurse Practitioner with a Master’s Degree in Nursing and been a Nephrology nurse since 2000. She completed her nursing studies at the University of Missouri, Sinclair School of Nursing, Columbia, MO, with a Bachelor of Science in Nursing and received her Master’s Degree at University of Phoenix Master of Science/Family Nurse Practitioner. Leslie is also certified by the Nephrology Nursing Certification Commission as a Certified Nephrology Nurse – Nurse Practitioner (CNN-NP). Leslie currently sees patients in the Columbia, Mexico, Moberly, Macon, Kirksville and Sedalia offices.