Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Aaron J Shiels, MD

Individual provider Gastroenterology Physician · NPI 1467448324

Aaron J Shiels, MD is a Gastroenterology in Rockford, Illinois. Graduated from Washington University School of Medicine in 1997, 29 years ago. Practices with Rockford Gastroenterology Associates Ltd, a 27-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
29
Trained at
Washington University School of Medicine
Licensed in
IL
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

401 Roxbury Rd
Rockford, IL 61107-5075
Phone: (815) 397-7340
Fax: (815) 397-2156
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 36110865 (IL)

Record details

NPI number1467448324
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 26, 2005
Last updated in NPPESSeptember 6, 2007

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolWASHINGTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 1997 (29 years in practice)
Group practice Rockford Gastroenterology Associates Ltd — 27 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Other providers in Rockford