Nationally recognized leader in colorectal surgery and care
Specializing in advanced minimally invasive and robotic surgery for colon and rectal conditions, including the innovative NICE procedure.
Treatments & signature expertise
Non-surgical hemorrhoid treatment
Minimally invasive colostomy reversal
Sphincter-sparing surgery for rectal cancer
The DARE procedure — advanced polyp removal
High-resolution anoscopy (HRA) & anal dysplasia program
The NICE procedure — A Houston Colon specialty
Houston Colon invented the NICE procedure. No abdominal incision. No major scarring. A recovery that leaves conventional surgery behind. Developed and first performed here in 2018, this robotic technique removes diseased tissue entirely through small port sites, delivering shorter hospital stays, lower complication rates, and an opioid-free recovery for most patients. The outcomes are peer-reviewed, published, and taught to surgeons worldwide. For patients who need colorectal surgery, nothing else in Texas comes close.
~ 2 days
Average hospital stay after major colorectal surgery — the national average is 5 to 7.
Fewer complications
Surgical outcomes that consistently outperform national benchmarks — not a claim, a published track record.
Opioid-free recovery
Most patients recover without opioids. Smaller incisions, less trauma, less pain — by design.
Colorectal conditions we treat
Houston Colon provides surgical and clinical expertise across the full spectrum of colorectal disease — from cancer and IBD to the conditions that quietly affect everyday life. If you are unsure whether your symptoms require a specialist, they likely do.
Colon & rectal cancer
Surgical outcomes in colorectal cancer are directly tied to the experience of the treating surgeon. Houston Colon's team offers subspecialty-level expertise in cancer resection — including complex and robotic-assisted cases — from screening through surgery, all within a single practice.
Diverticulitis
Recurring diverticulitis is a surgical condition. Houston Colon offers both medical management and advanced robotic intervention for patients who have exhausted conservative options, with minimally invasive techniques that reduce recovery time and complication risk.
Anorectal conditions & inflammatory bowel disease
Hemorrhoids, fissures, fistulas, rectal prolapse, and inflammatory bowel disease (IBD), including Crohn’s disease and ulcerative colitis, are all treatable conditions. Houston Colon offers minimally invasive and office-based options for patients who have delayed care or been told their options are limited.
Symptoms that deserve expert attention
Many colorectal symptoms start subtly and are easy to brush off, especially when life gets busy or symptoms come and go. But ongoing digestive or bowel-related changes are worth paying attention to. If any of these symptoms sound familiar, it may be time to schedule an evaluation with a colorectal specialist.
Rectal bleeding
Rectal pain
Abdominal pain
Anal itching or burning
Stool leakage or loss of bowel control
Lump or mass near the anus
What to expect at Houston Colon
Whether you’re seeking a second opinion or advanced treatment for a complex condition, we’re here to provide compassion, reassurance, and the highest level of care. Welcome to Houston Colon.
Most patients are discharged within approximately two days and return to normal activity within two to three weeks. After discharge, the care team stays accessible through the patient portal for questions, prescriptions, and follow-up scheduling.
Testimonials
The best way to understand what care at Houston Colon looks like is to hear it
from the people who have experienced it.
Hear from our patients
Expertise that has helped shape modern colorectal surgery
Through more than 100 peer-reviewed publications, decades of clinical experience, and leadership in complex colorectal procedures, Dr. Haas has earned the trust of both patients and physicians nationwide.
That same standard of excellence extends across the entire surgical team.
Every physician at Houston Colon is board-certified and has completed advanced fellowship training in advanced minimally invasive colorectal and general surgery, bringing highly specialized expertise to the diagnosis and treatment of colorectal cancer, diverticulitis, inflammatory bowel disease, anorectal disorders, and other complex conditions.
Patients travel from across the country for care that combines surgical precision with thoughtful, individualized treatment — all delivered by a team dedicated exclusively to colorectal health.
Meet our team
A Message from Dr. Haas
Frequently asked questions
Colorectal surgeons undergo board certification and fellowship training beyond general surgery, making them the appropriate specialists for conditions that require surgical expertise in this field.
Houston Colon's surgical team performs among the highest volumes of robotic colorectal surgery in the country.
Colonoscopies are available for routine screening and diagnostic evaluation. The team will advise on scheduling based on your age, risk profile, and symptoms, and coordinate prep and insurance verification in advance.
