Harold BachM.D.
General Surgery·Downers Grove, IL
Harold Bach, M.D. is a General Surgery provider in Downers Grove, IL, as of July 2026.
- NPI1184886061
- Registered2008
- Class of2008
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Education
Education on record as of August 2026.
Harold Bach at a glance
- Provider
- Harold Bach
- Credential
- M.D.
- Specialty
- General Surgery
- Procedures
- General Surgery CPT codes
- Location
- Downers Grove, IL
- Medical school
- Loyola University of Chicago, Stritch School of Medicine
- Graduated
- 2008
- NPI registered
- 2008
- NPI
- 1184886061
- 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 Harold Bach practice?
Harold Bach, M.D. is based in Downers Grove, IL. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is Harold Bach's NPI number?
Harold Bach's National Provider Identifier (NPI) is 1184886061, registered in 2008. Specialty on record: General Surgery; credential M.D.
Where did Harold Bach go to medical school?
Harold Bach, M.D. attended Loyola University of Chicago, Stritch School of Medicine, graduating in 2008.
How many General Surgery providers in Illinois work at ambulatory surgery centers?
109 General Surgery surgeons and proceduralists in Illinois are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, Harold Bach among them. The Illinois General Surgery directory lists each one by city with credential, NPI, and center affiliations.
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