CNOS
Gastroenterology • Sioux City, IA • Since 1999 • 2 or more (CNOS Gastroenterology clinics in Siouxland region; specific locations listed) locations
Information from public sources; not independently verified. Confirm hours, insurance and appointment availability with the clinic.
Last gathered July 11, 2026. How our information is sourced · Report incorrect information
About
CNOS Sioux City offers Gastroenterology services as part of its broader specialty and preventative care network. The Sioux City area CNOS locations provide diagnostic screenings and a range of medical and surgical treatments, including specialty care in areas such as gastroenterology. With 10 U.S. offices and a focus on comprehensive health services, CNOS supports gastroenterology needs within its orthopedics, neurology, sports medicine, and general surgery offerings. For specifics, contact the Sioux City offices listed in Iowa/Sioux City region.
Services Offered
Not published.
Insurance & Payment
Not published.
Languages Spoken
Not published.
Social Media
Photos
Photos published by CNOS showing the gastroenterology practice in Sioux City, IA.
What Patients Say
Overall sentiment across review platforms: mixed
- Birdeye: 3.6 stars (17 reviews)
Patients praise
- High quality and professionalism of physicians
- Effective communication and clear explanations by doctors
- Efficient and modern clinic facilities
- Compassionate and knowledgeable care in specific gastroenterology cases
Common complaints
- Rudeness and lack of empathy from support/nursing staff
- Concerns regarding billing policies and co-pay procedures
- Perceived difficulty in accessing physicians vs. assistants for care
"Dr. Bligh is a wonderful doctor, one of the best in our area! She will be honest, even if it’s difficult to hear. She has an ability to catch and treat what other doctors miss or brush off."
- Patient testimonial for Dr. Sarah Bligh (CNOS website)"First, Dr. Bligh was wonderful and professional... However, the nurse... had a very strong accent and was very rude... she dismissively said she had to 'cover the whole clinic today' and didn't have time."
- Patient review from LocalityBiz"He's my favorite doctor! And I have had many in my life. He's got a great, upbeat personality. He's done two colonoscopies for me and everything went great!"
- Patient testimonial for Dr. Jeffrey Michalak (CNOS website)Synthesized from public review platforms as of Jul 11, 2026 - sources: [1][2][3][4].
In the News
- Nichole R. Friessen, PA - Physician Assistant in Le Mars, IA - May 14, 2026
- Makenzie K. Kreber, NP - Nurse Practitioner in Sioux City, IA - May 14, 2026
- Amanda J. Lauer - Physical Therapist in Sioux City, IA - May 14, 2026
- Medical Weight Loss at CNOS: Real Support, Real Results—Now Easier to Access Than Ever - CNOS - Aug 1, 2025
- Why Medical Weight Loss Looks Different for Everyone - CNOS - Jan 6, 2026
Information sourced from the clinic's website as of July 11, 2026.
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