Colorectal Surgery

At GRMG Colorectal Surgery Associates, we provide specialized care for conditions affecting the colon, rectum and anus. From preventive screenings to the diagnosis and treatment of colorectal diseases, our team is committed to helping patients maintain their digestive health and improve their quality of life.

Our services include screening colonoscopies, treatment of colorectal cancer and care for a variety of noncancerous colorectal conditions. When surgery is needed, we offer advanced, minimally invasive techniques, including robotic-assisted surgery, which may result in smaller incisions, less pain and faster recovery.

Whether you need a routine screening or specialized surgical treatment, GRMG Colorectal Surgery Associates is dedicated to providing compassionate, personalized care close to home.

When Should You See a Colorectal Specialist?

You may benefit from seeing a colorectal specialist if you experience ongoing changes in bowel habits, rectal bleeding, persistent abdominal pain or other concerns involving the colon or rectum. Colorectal specialists also provide preventive screenings and treatment for both cancerous and noncancerous conditions.

Conditions Treated

  • Colon and rectal cancer
  • Colon polyps
  • Diverticulitis and diverticular disease
  • Hemorrhoids
  • Anal fissures and fistulas
  • Inflammatory bowel disease (Crohn’s disease and ulcerative colitis)
  • Rectal prolapse
  • Fecal incontinence
  • Other benign (noncancerous) conditions of the colon, rectum and anus

Procedures

  • Screening and diagnostic colonoscopies
  • Colon polyp removal
  • Colorectal cancer surgery
  • Minimally invasive colorectal surgery
  • Robotic-assisted surgery using the da Vinci surgical system
  • Colon and rectal resections
  • Diverticulitis surgery
  • Hemorrhoid procedures
  • Anal fistula and fissure procedures
  • Rectal prolapse surgery

 

Meet Our Provider

Matthew Voth, MD
830.253.4280

ACCEPTING PATIENTS BEGINNING DECEMBER 2026!

Matthew Voth, MD, is a board-certified colorectal surgeon with nearly 20 years of experience providing specialized surgical care. Board certified in both general surgery and colorectal surgery, Dr. Voth has extensive experience treating colorectal conditions, including colon cancer and benign colorectal diseases, and provides screening colonoscopies to support the early detection and prevention of colorectal cancer.

Dr. Voth provides comprehensive colorectal surgical care, utilizing advanced techniques and technology to offer effective treatment options. His expertise includes minimally invasive surgery using the da Vinci robotic surgical system, which can help patients recover faster.

He believes in providing compassionate, individualized care while helping patients feel comfortable, informed and confident throughout their treatment. Dr. Voth understands the importance of delivering high-quality surgical care to the communities he serves.

Dr. Voth earned his medical degree from the University of North Dakota School of Medicine and completed his internship and residency at West Penn Hospital. He went on to complete a fellowship in Colon and Rectal Surgery at McGovern Medical School at UTHealth. He brings this specialized training and extensive surgical experience to patients in Seguin and the surrounding communities.