MercyOne North Iowa Gastroenterology Care
Gastroenterology • Mason City, IA • Since 1998
About
MercyOne North Iowa Gastroenterology Care in Mason City is part of the MercyOne system (Catholic, non-profit, owned by Trinity Health). MercyOne operates 19 U.S. offices and provides specialized gastroenterology services in the North Iowa region, including Mason City. They offer access to online medical records, appointments, and test results, and have career opportunities in related health roles. For precise gastroenterology services, scheduling, and physician details in Mason City, contact MercyOne Mason City or visit mercyone.org.
Clinic Type
Gastroenterology
Address
250 S. Crescent Drive, Suite M2500, Mason City, IA 50401
Phone
1641-494-5350
todd.mizener@mercyone.org
Opening Hours
8:00am - 5:00pm
Telehealth
Offers Virtual Visits
Services Offered
Technology & Equipment
Team
Insurance & Payment
—
Languages Spoken
—
FAQs
What conditions are treated?
Digestive diseases and health conditions including abdominal pain, GERD, celiac disease, colorectal cancer, constipation and diarrhea, Crohn’s disease, diverticulitis, hepatitis, hemorrhoids, IBD, IBS, peptic ulcers.
What procedures are offered?
Colonoscopy, Esophagogastroduodenoscopy (EGD), Capsule endoscopy, Laxatives information, Breath tests.
Schedule an Appointment
Use the Schedule online option on MercyOne or contact the clinic to book an appointment.
What services are provided?
Gastroenterology care including evaluation and treatment of digestive diseases, pancreatic diseases, colorectal cancer, IBD, IBS, peptic issues, ulcers, and related conditions.
Social Media
Photos


What Patients Say
Overall sentiment across review platforms: mixed
- MedicalRecords.com / HealthLocator: 2.5/5 (Hospital-wide score) (51 reviews (at MedicalRecords.com))
Patients praise
- Highly rated individual gastroenterology providers like Dr. Satish Sondhi
- Appreciation for staff politeness and listening skills in specific clinical interactions
Common complaints
- Concerns regarding communication among staff and with patients
- Dissatisfaction with responsiveness and care quality in some departments
- Issues reported regarding medical records transfer requests
"As always, I had a good experience while seeing Dr. Sondhi. ... His nurses have been understanding and make you feel comfortable."
— Vitals.com patient review"The care at this facility seems very sub-par. Staff does not communicate well with each other or the patients. Requests and authorization to send all ER/Doctor/Surgery/X-Ray records to follow up doctor was not completed."
— MedicalRecords.com user reviewSynthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].
In the News
- Iowa Specialty Hospitals & Clinics to Open New Clinic in Mason City | Latest News | Iowa Specialty Hospital — Feb 17, 2026
- New Iowa Specialty Hospitals Clinic Opens in Mason City to Serve Growing Patient Demand – NorthIowaNow.com — Apr 24, 2026
- Mason City welcomes new MercyOne walk-in clinic for quick care | Cerro Gordo County | kimt.com — Oct 1, 2025
- MercyOne North Iowa eyes innovation amid funding challenges — Mar 28, 2026
- MercyOne takes over Mason City Clinic building | Cerro Gordo County | kimt.com — Jul 18, 2025
Information sourced from the clinic's website as of July 11, 2026.
More gastroenterology clinics in Mason City
Summary: Mason City Clinic is a multispecialty medical practice based in Mason City, Iowa, with services spanning allergy, orthopedics, heart failure, bariatric surgery, and other specialties. While it operates across northern Iowa and southern Minnesota, the provided information does not explicitly list gastroenterology as a separate specialty. If you’re seeking a gastroenterologist specifically in Mason City, contact the clinic at 800-622-1411 or 641-494-5403 to confirm GI providers or get referrals. The clinic was founded in 1989, employs around 39 people, and is located at 250 S Crescent Drive, Mason City, IA 50401.
Comparing your options?
See other gastroenterology clinics in Mason City, or search the full directory by insurance, ratings, and more.

