Coronavirus (COVID-19) Statement

Although our doors will remain open amidst the rising concern over COVID-19, in an effort to keep our patients and staff healthy, we are taking precautions to avoid further spread of the virus.

If you have an upcoming visit and identify with the following statements, please call us to reschedule.

  • Fever greater than 100.4º
  • Respiratory symptoms or difficulty breathing
  • Exposed to someone with COVID-19 in the past 14 days
  • Placed in self/hospital quarantine by medical doctor

We are offering telemedicine or phone call visits in place of office visits. Our office will remain open for our infusion center patients.

To limit any potential exposure, we ask that you do not bring anyone with you to the appointment. We continue to update our protocol to ensure safety for everyone. This includes expanded measures to disinfect our office and compliance with recommendations from the Missouri Department of Health and The Center for Disease Control.

Health Resources

HotButton Library

Patient Portal

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Info Request

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Welcome to Gastrointestinal Associated Specialists

When you have a gastrointestinal problem…

Get the experience, comprehensive care and unwavering commitment you deserve

Problems of the digestive tract are no picnic. They can be painful, persistent and even dangerous. And in addition to being essential to your overall health, your gastrointestinal (GI) tract is a complex anatomical network that requires highly specialized medical care. It also demands attention and commitment to your individual needs... and to resolving your problem at its source.

At Gastrointestinal Associated Specialists, we address your digestive concerns with proven skill, a large volume of experience and total dedication to doing what’s most appropriate and effective for you. Regardless of your problem, we meet it with comprehensive and leading-edge gastroenterology services delivered by highly credentialed, board-certified GI specialists with longstanding reputations for medical excellence.

Yet, we know that excellent GI care is about heartfelt compassion and dedication to your best health. That’s why we treat you with warmth and kindness and customize our care to your individual needs.

To schedule an appointment with Dr. Schnell or Dr. Walden, please call our office at (816) 527-0031 or use our online Patient Portal. For additional information on any condition, treatment or procedure, please visit our Health Education Library.

James M. Walden, Jr., MD, and Gregory A. Schnell, MD, are gastroenterologists practicing in North Kansas City, Missouri. Gastroenterology is the branch of medicine that focuses on the digestive system and its disorders such as intestinal problems, colon disease, irregular bowel habits and many more. Treatments and procedures performed by gastroenterologists include endoscopy, colonoscopy, heartburn treatment, GERD treatment, IBD treatment, colon cancer treatment, colitis treatment and more. Gastrointestinal Associated Specialists serve the communities of Clay, Platte and Jackson counties, and see patients from as far away as Smithville, Kearney, Excelsior Springs and Independence.


Gastrointestinal Associated Specialists
1300 NW Briarcliff Parkway, Suite 150  •  Kansas City, MO 64150  •  816-527-0031

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