Warren ChangM.D.
Warren Chang, M.D. is an Ophthalmology provider in Bloomington, IN affiliated with 2 ambulatory surgery centers in IN, as of July 2026.
- NPI1902888662
- Registered2005
- Centers2
- StateIN
- Class of1992
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.
Warren Chang at a glance
- Provider
- Warren Chang
- Credential
- M.D.
- Specialty
- Ophthalmology
- Procedures
- Ophthalmology CPT codes
- Location
- Bloomington, IN
- Medical school
- Harvard Medical School
- Graduated
- 1992
- NPI registered
- 2005
- NPI
- 1902888662
- 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 Warren Chang practice?
Warren Chang, M.D. is based in Bloomington, IN and is affiliated with 2 ambulatory surgery centers: Bloomington Surgery Center in Bloomington, IN and Bloomington ASC LLC Dba Indiana Specialty Surgery Center in Bloomington, IN. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is Warren Chang's NPI number?
Warren Chang's National Provider Identifier (NPI) is 1902888662, registered in 2005. Specialty on record: Ophthalmology; credential M.D.
Where did Warren Chang go to medical school?
Warren Chang, M.D. attended Harvard Medical School, graduating in 1992.
How many Ophthalmology providers in Indiana work at ambulatory surgery centers?
117 Ophthalmology surgeons and proceduralists in Indiana are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, Warren Chang among them. The Indiana Ophthalmology directory lists each one by city with credential, NPI, and center affiliations.
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