Michael A. Duke, MD 

Born and raised in Baton Rouge, Louisiana, Dr. Duke attended Centenary College in Shreveport getting his BS in Biology. He then attended medical school at Louisiana State University School of Medicine in New Orleans. Following medical school, Dr. Duke completed his Family Practice residency at MCCG in Macon, GA. 

Dr. Duke and his wife, Cathy moved to Milledgeville in 1998 where he began his career as a Board Certified Family Practice Physician. He was in group practice for 18 years before opening his own practice, Sinclair Family Health, in January 2017. He and Cathy are firmly rooted in the community raising their three children, Shelby, Davis and Cameron. Dr. Duke enjoys coaching kids sports teams, singing in the choir at Milledgeville First United Methodist Church and the beach. 

Dr. Duke has served for many years as Medical Advisor to both the Student Health Clinic at Georgia College and Three Rivers Home Health in Milledgeville. He has served in many capacities at our local hospital including Chair of the Department of Medicine, Chief of Staff and as a member of the Board of Directors. 

family doctor

Leah Barbee, NP-C 

Born and raised in Irwinton, Georgia, Leah attended Georgia College and State University getting her BS in Nursing (2002) and her MS in Nursing with a specialty in Family Nurse Practitioner (2007).  She has a variety of experience including cardiac, public health and women’s health.  She has worked as a nurse practitioner at GC&SU for 10 years with Dr. Duke as her collaborating physician.

Leah and her husband, Jason live in Milledgeville where they are involved in the community.  Her husband is a teacher at GMC prep school where their children, Jordan and Britton attend.  She and her family are active members of their hometown church Voice of Truth in Irwinton, Georgia.  Leah enjoys health and wellness.  She is excited about joining Sinclair Family Health and looks forward to taking care of your healthcare needs.


Since 1998, I have strived to provide the most current, compassionate and cost effective care for you and your family. You can trust us with all of your healthcare needs. 

Family Oriented

Choosing a Doctor for your family can be a difficult decision. When you choose me as your family physician, you can rest assured that I will provide the best care possible for you and your loved ones 


I make it a priority to listen to my patients, to understand your health concerns and address your healthcare needs. Your overall health and well being are important to me. I will always strive to address your concerns. 

Located in Baldwin County, Sinclair Family Health provides the full spectrum of family medicine services to patients ages 2 and up.