johnJohn H. Winston, III, M.D. brings many years of extensive experience to the San Antonio region and the Colorectal Surgery Services, PLLC.

Dr. Winston received an engineering degree from the University of Alabama then received his medical degree from the University of Alabama School of Medicine. He completed his residencies in General Surgery & Colorectal Surgery at the Washington Hospital Center in Washington, DC receiving diverse training in all aspects of surgery of the colon, rectum & anus. After completing his training, he held academic positions at the Ohio State University then the University of Texas HSC at San Antonio.

Dr. John Winston’s surgical & research interests include defecatory physiology, anorectal ultrasound, benign anal diseases, rectal cancer and minimally invasive surgery. He is board certified in both general surgery and colon and rectal surgery. He has been elected as fellow in both the American College of Surgeons and the American Society of Colon & Rectal Surgery, achieving this very early in his career. This gives him the added skill & experience to take care of the most complex diseases of the colon, rectum and anus.

familyDr. Winston has a special interest in pelvic floor problems and diseases. He was trained by an international expert. He has performed over 6,000 individual diagnostic studies on patients to help them identify their problem and help them outline a plan of treatment.

He was raised in Alabama where his extensive family remains. He married his childhood sweetheart & has a young daughter. He enjoys refurbishing furniture in his spare time.

We are happy to provide second opinions regarding your diagnosis and possible surgery.



T. Spencer Skelton, MD brings experience from Houston’s Texas Medical Center to the San Antonio area.

Dr. Skelton received his Bachelor of Science from Texas A&M University in Biomedical Science. He then spent a short time in Nashville, Tennessee, working in the field of human organ transplantation and volunteering internationally. This experience led him back to Texas, where he obtained his medical degree from The University of Texas Health Science Center in Houston. He completed his General Surgery Residency and his Colorectal Surgical Fellowship at the Houston Methodist Hospital and The Colon and Rectal Clinic of Houston, located in the Texas Medical Center. His training provides him with the added skill and experience to manage complex disease processes of the colon, rectum, and anus. While in residency, he also completed a two year fellowship in transplantation immunology. He has presented his work at several local and national meetings, including the American College of Surgeons Annual Symposium.

Ultimately, under the guidance of several prominent colon and rectal surgeons, Dr. Skelton changed his career path to that of colon and rectal surgery. His surgical interests include benign and malignant disease of the colon and rectum, anorectal disease such as anal fistula, and minimally invasive surgery. He is board certified in both general surgery and colon and rectal surgery. He is an active member in the American College of Surgeons, American Society of Colon and Rectal Surgeons, and served as the president of the Texas Society of Colon and Rectal Surgeons.

Born and raised in the Piney Woods of Texas, Dr. Skelton has spent the last twelve years living in Houston, before relocating to the Hill Country. He met his wife in medical school and they now have two little boys. In his spare time, he enjoys fishing with his children and playing golf. He is a member of the New Braunfels Mens’ Golf Association and the Comal County Texas A&M Former Students Association.


Your Team

Business Manager
Colorectal Management Services

Clinical Manager / Scheduler
Colorectal Surgery Services

Medical Assistant
Colorectal Surgery Services

Receptionist / Financial Assistant/ Scheduler
Colorectal Surgery Services

Medical Assistant / Records Clerk
Colorectal Surgery Services

Financial Assistant
Colorectal Management Services

Records Clerk / Receptionist / Billing Assistant
Colorectal Surgery Services