Our Physicians
Michael F. Yeiser, M.D., F.A.A.P.
I was born and raised in Owensboro and attended Owensboro High School. At Western Kentucky University, I completed my undergraduate education and received my medical training at University of Kentucky. I did my internship and residency in Pediatrics at the University of Kentucky in the University of Kentucky Medical Center. Currently I am board certified by the American Board of Pediatrics and an active fellow in the American Academy of Pediatrics (F.A.A.P)
My wife, Pam, and I have three children, Rachel, Benjamin and Adam. Together we spend much of our time enjoying our church, traveling, swimming and boating.
John D. Lauzon, M.D., F.A.A.P.
I was born in Owensboro and attended Brescia College, graduating in 1977 with a B.S. in Biology, Magna Cum Laude. I attended the University of Kentucky College of Medicine and received my medical degree in 1982. I completed a three-year residency in Pediatrics at the Medical University of South Carolina Hospital in Charleston, South Carolina. I am Board Certified by the American Board of Pediatrics and a fellow of the American Academy of Pediatrics (F.A.A.P) as well as a member of the Kentucky Pediatric Society. I have served as Medical Director of Peak Medical Research since 2005.
My wife Cate is an elected member of the Owensboro Board of Education. We have two daughters, Grace and Madeline who are both attending college . We also enjoy cooking, gardening, music and theater.
Lynette K. Martin, M.D., F.A.A.P.
I was born and raised in Chicago. I received my undergraduate degree from the University of Illinois then went on the medical school at Northwestern University. I completed my pediatric training at Case Western University in Cleveland then served as a pediatrician in the Air Force for four years before moving to Owensboro. Currently, I am board certified in pediatrics and am an active fellow in the American Academy of Pediatrics (F.A.A.P)
My husband, Dr. Bill Martin (orthopedic surgeon), and I have four children, Nate, Erin, Daniel and Abby. We spend our time away from work at church, keeping up with our children, bicycling and traveling (often to Chicago for deep dish pizza).
Courtney Q. Crews, M.D., F.A.A.P.
I was born in Ft. Lauderdale, Florida and raised in Calhoun where I attended McLean County High School. I received my undergraduate degree from Centre College and then went to the University of Louisville for medical school. I completed my pediatric training at the University of Kentucky Children’s Hospital in Lexington. I am board certified in pediatrics.
My husband, Jay Crews (pediatric dentist) and I have two boys, Parker and Cole. Outside of work we enjoy traveling, hiking, snow and water skiing and spending time with our children.
Amy H. Ray, M.D., F.A.A.P.
I was born and raised in Owensboro and attended Apollo High School. I then completed my undergraduate training at Kentucky Wesleyan College and my medical training at the University of Louisville School of Medicine. I completed my residency training at Kosair Children’s Hospital in Louisville, Kentucky. I am board certified in pediatrics.
My husband Ed and I have three children. We enjoy church, golf, tennis, traveling and visiting with family and friends.
Andrea Powell Johnston, M.D., F.A.A.P.
I was born and raised in Owensboro and attended Daviess County High School. I received my undergraduate degree from Belmont University in Nashville, TN. I then completed my Master's degree and my medical degree at the University of Louisville. I completed my pediatric residency at Riley Hospital for children in Indianapolis, IN.  I am board certified in Pediatrics.
My husband Mark and I have a son, Cooper and a daughter, Bailey. We enjoy traveling, walking and biking together, music and theater, and spending time with our family and friends.
Jeremiah R. Mason, D.O., F.A.A.P.
I completed my undergraduate studies at Murray State University and received my medical degree from Kirksville College of Osteopathic Medicine. I completed my pediatric residency at Kosair Children’s Hospital at the University of Louisville.
I am originally from Henderson County, while my wife Beth is an Owensboro native. We have three children and are happy to return home to western Kentucky.
Kathi Simpson, APRN-CPNP
I was born in Cherrypoint, North Carolina and raised in Ohio County. I completed my undergraduate degrees at Western Kentucky University and University of Louisville. I attended the Pediatric Nurse Practitioner Program at Indiana University – Purdue University at Indianapolis and am certified by the Pediatric Nursing Certification Board. For the past 20 years I have been employed as a Pediatric Nurse Practitioner for the University of Kentucky where I completed my Master’s degree.
My husband, Dave, and I have two daughters, Phoebe and Abigail and have now come back to be near family in Ohio County.