William RilesM.D.
William Riles, M.D. is a Gastroenterology provider in Chicago, IL affiliated with 1 ambulatory surgery center in IL, as of July 2026.
- NPI1891705737
- Registered2006
- Centers1
- StateIL
- Class of1998
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Ambulatory surgery centers
Centers whose service lines match this provider’s. Affiliations change; verify independently.
Education
Education on record as of August 2026.
William Riles at a glance
- Provider
- William Riles
- Credential
- M.D.
- Specialty
- Gastroenterology
- Procedures
- Gastroenterology CPT codes
- Location
- Chicago, IL
- Medical school
- University of South Carolina School of Medicine
- Graduated
- 1998
- NPI registered
- 2006
- NPI
- 1891705737
- Snapshot
- July 2026
Identity, specialty, and affiliations change over time. This is not an endorsement, and not clinical, billing, or legal advice. Providers may request corrections at founders@datalilyai.com. Read the DataLily AI data methodology.
Questions
Where does William Riles practice?
William Riles, M.D. is based in Chicago, IL and is affiliated with 1 ambulatory surgery center: Surgery Center At 900 N Michigan Ave LLC in Chicago, IL. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is William Riles's NPI number?
William Riles's National Provider Identifier (NPI) is 1891705737, registered in 2006. Specialty on record: Gastroenterology; credential M.D.
Where did William Riles go to medical school?
William Riles, M.D. attended University of South Carolina School of Medicine, graduating in 1998.
How many Gastroenterology providers in Illinois work at ambulatory surgery centers?
122 Gastroenterology surgeons and proceduralists in Illinois are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, William Riles among them. The Illinois Gastroenterology directory lists each one by city with credential, NPI, and center affiliations.
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