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Patient Forms

Download the forms above, print and fill out manually (Black or Blue Pen).


E. Scott Yarbro, M.D.


A native of Jackson, Dr. Scott Yarbro founded Jackson Urological Associates in 1989. He received his medical education at the University of Virginia Medical School and also had his internship and residencies there. Dr. Yarbro is board certified in urology.

Don McKnight, M.D.


Dr. Don McKnight, board certified in urology, joined the clinic in 1992. A Memphis native, Dr. McKnight received his medical degree from the University of Tennessee College of Medicine. His internship in general surgery and his residencies in general surgery and urology were at Medical College of Georgia in Augusta.

Raymond C. Howard, M.D.


A native of Clarksville, TN, Dr. Raymond C. Howard received his medical education at the University of Tennessee in Memphis. His internship and residencies in surgery and urology also were at UT Memphis. He joined Jackson Urological Associates in 1996. He is board certified in urology.

John Carraher, M.D.


Dr. John B. Carraher, a board certified urologist, had been practicing urology for four years when he joined Jackson Urological Associates in 2003. Dr. Carraher is a diplomate of the American Board of Urology and a Fellow of the American College of Surgeons. He is a graduate of the University of Tennessee at Memphis Medical School; his internship and residency also were at the University of Tennessee.

Peter G. Lawrence, M.D.


A graduate of University of Louisville School of Medicine, Dr. Lawrence had his residency in general surgery and urology at Indiana University School of Medicine. Dr. Lawrence is board certified by the American Board of Urology. Special interests include robotic surgery, urologic oncology, stone disease, and female urinary incontinence.He joined the clinic in 2004.

Dr. Scott M. Castle

Jackson Urological Associates, PC has recently welcomed Dr. Scott M. Castle, urologist, to his new practice at 28 Medical Center Drive, Jackson, TN.  Dr. Castle has experience in the diagnosis and treatment of male and female urological concerns. 

Dr. Castle attended the University of Tennessee Health Science Center, Memphis, TN and completed his urology training at the University of Miami. He is a Diplomate of the American Board of Urology and a member of the American Urologic Association.  His other professional memberships include the Society of Robotic Surgery.

Dr. Castle and his family live in Jackson, TN.   

Kelly Johnston, PA


Kelly N. Johnston, PA-C joined Jackson Urological Associates, PC in January, 2018. Kelly attended Mississippi State University and Bethel University. She is a member of the American Academy of Physician Assistants and Tennessee Academy of Physician Assistants.

Kelly specializes in urological diagnosis and treatment for both male and female patients and assists with robotic surgeries.

As a native of Union City, TN, Kelly Johnston, PA-C can schedule appointments in the Jackson, TN office and the Union City office by calling 731-427-9973 or 800-748-9855.

Patient Portal Invitation

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Contact Information

28 Medical Center Dr
Jackson, TN 38301
Phone: (731) 427-9971

Business Hours

Monday  8am - 5pm
Tuesday  8am - 5pm
Wednesday  8am - 5pm
Thursday  8am - 5pm
Friday  8am - 5pm

Our Providers

E. Scott Yarbro, M.D.
Don McKnight, M.D.
Raymond C. Howard, M.D.
John Carraher, M.D.
Peter G. Lawrence, M.D.
Kelly Johnston, PA