1615 North US Highway 75 Ste. A
Sherman, TX 75090
HoursClosed. Opens Mon at 8 AM
- Board Certified in Colon & Rectal Surgery & General Surgery
- Currently Accepting New Patients
- Most Insurance Plans Accepted
- Performs Colonoscopies
- Infusion Services Available
GI Alliance - Sherman Endoscopy Center
Gastroenterology in Sherman, TX
GI Alliance - Sherman Endoscopy Center
1615 North US Highway 75
Closed. Opens Mon at 8 AM
Request an Appointment
About Nathan Smallwood, M.D.
Dr. Smallwood is a board-certified Colon and Rectal Surgeon. He performs anorectal procedures for hemorrhoids, fissures and fistulas. He performs diagnostic and therapeutic colonoscopies and is one of the few physicians in the U.S. to have experience in using endoluminal vacuum therapy to treat anastomotic leaks. Dr. Smallwood has had an extensive experience with the da Vinci® Robotic System for both benign and malignant colon and rectal procedures. He specializes in sphincter sparing resections for rectal cancer including transanal total mesorectal excision (TaTME). He has experience in managing constipation, rectal prolapse, and the treatment for fecal incontinence with the sacral nerve stimulator. He is a member of the American Board of Surgery and the American Society of Colon and Rectal Surgeons.
Why did you choose to specialize in colorectal surgery?
Having the opportunity to positively impact a patient’s life is truly a blessing and is the primary source of joy for me as a surgeon. This is why I especially love Colon and Rectal Surgery. As a Colon and Rectal Surgeon, I can prevent cancer with a colonoscopy or cure cancer with a surgical resection. In benign disease, Colon and Rectal Surgery can dramatically improve a patient’s quality of life. This is especially true for those patients who have had to suffer in silence for months or years due to fecal incontinence or who have an anal fistula, fissure or hemorrhoids.
What do you and your family enjoy doing in your spare time?
My family and I enjoy spending time at my parent’s ranch fishing and feeding the cows. My daughters love to swim, go to the zoo, and before the pandemic, Chuck E. Cheese’s.
Is there a treatment/procedure that you want your patients to know more about?
Bowel incontinence/leakage affects nearly 1 in every 8 adults over the age of 65. There are advanced therapies available that can help reduce the frequency of bowl leakage incidents, which can positively impact anyone’s quality of life and normal activity. It’s important that our patients know there are options to consider. Below are some informative videos that were produced in collaboration with Axonics, my preferred partner for Sacral Neuromodulation Therapy. You can also click here for more detailed information about Axonics Sacral Neuromodulation Therapy.
Awards and Accreditation:
Texas A&M University
McGovern Medical School at The University of Texas Health Science Center at Houston
Residency & Fellowship – Baylor University Medical Center at Dallas
Board Certified in Colon and Rectal Surgery
Board Certified in General Surgery
Awards and Recognitions:
2008 Alpha Omega Alpha
2010 Highest Intern ABSITE Exam Award
2011 Highest PGY2 ABSITE Exam Award
2012 Highest PGY3-5 ABSITE Exam Award
2014 North Texas Chapter of Colon & Rectal Surgeons, Outstanding Resident Presentation
American College of Colorectal Surgeons
American College of Surgeons
- Abdominal Pain
- Anal/Rectal Bleeding
- Blood in the Stool
- Bowel Incontinence
- Difficulty Swallowing
- Unexplained Weight Gain/Loss
- Yellowing of the Skin/Eyes
- Acid Reflux
- Anal Fissure
- Anemia/Iron Deficiency
- Barrett's Esophagus
- Biliary Obstruction
- C. Difficile Colitis
- Celiac Disease
- Colon Cancer
- Colorectal Polyps
- Crohn's Disease
- Cyclic Vomiting Syndrome (CVS)
- Eosinophilic Esophagitis
- Esophageal Motility Disorder
- Fatty Liver Disease
- Food Intolerance
- Gallbladder Disease
- Helicobacter Pylori
- Hiatal Hernia
- Impacted Bowel
- Inflammatory Bowel Disease
- Irritable Bowel Syndrome
- Lactose Intolerance
- Liver Cirrhosis
- Non-alcoholic Steatohepatitis
- Peptic Ulcers
- Primary Biliary Cholangitis
- Primary Sclerosing Cholangitis
- Ulcerative Colitis
- Anorectal Manometry
- Anorectal Surgery
- Argon Laser Therapy
- Capsule Endoscopy
- Colon Cancer Screening
- Colorectal Surgery
- Endoscopic Mucosal Resection
- Esophageal Dilation
- Esophageal Manometry
- Feeding Tube Insertion (PEG)
- Flexible Sigmoidoscopy
- Gastrointestinal Surgery
- Hemorrhoid Banding
- Infusion Therapy (IV Infusion)
- Laparoscopic Colon Surgery
- Robotic Colon Surgery
I highly recommend Dr. Smallwood and his staff, as well as the medical team at Baylor, Scott and White Hospital in Sherman. Everyone was genuinely kind and compassionate, and I felt comfortable expressing any of my questions or concerns to this knowledge and thorough physician.
One of the best clinics in Grayson County..very friendly staff. Doctor Nathan explained every detail , great Doctor!
Excellent and professional great bedside manner and I believe that he really cares about me as a person
Dr. Smallwood was very knowledgeable I felt comfortable talking with him he examined me ordered me some new medicine scheduled my next test his nursing staff was great !
Such nyc doctor . Heard patiently my problem and sorts out way to get rid of hemorrhoids … definitely recommend to my family and friends..