Mark T Shiels, M.D.

Gastroenterology

Rockford, IL

Specialty

Gastroenterology

Credential

M.D.

NPI

1104812023

Affiliated Facility

Rockford Gastroenterology Associates Ltd

401 Roxbury Rd, Rockford, IL 61107

(815) 484-7930

Medicare95% Patient Rating

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Procedures & Specialty

Mark T Shiels specializes in Gastroenterology procedures performed in an outpatient ambulatory surgical setting.

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About this profile: Surgeon information is sourced from the CMS National Plan and Provider Enumeration System (NPPES) NPI Registry and reflects the practice address on file as of February 2026. Facility affiliation is based on matching practice address to CMS-certified ambulatory surgery center locations.