Gregory DorenM.D.
Ophthalmology·Chicago, IL
Gregory Doren, M.D. is an Ophthalmology provider in Chicago, IL affiliated with 1 ambulatory surgery center in IL, as of July 2026.
- NPI1851411847
- Registered2007
- Centers1
- StateIL
- Class of1985
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.
Gregory Doren at a glance
- Provider
- Gregory Doren
- Credential
- M.D.
- Specialty
- Ophthalmology
- Procedures
- Ophthalmology CPT codes
- Location
- Chicago, IL
- Medical school
- University of Michigan Medical School
- Graduated
- 1985
- NPI registered
- 2007
- NPI
- 1851411847
- 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 Gregory Doren practice?
Gregory Doren, 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 Gregory Doren's NPI number?
Gregory Doren's National Provider Identifier (NPI) is 1851411847, registered in 2007. Specialty on record: Ophthalmology; credential M.D.
Where did Gregory Doren go to medical school?
Gregory Doren, M.D. attended University of Michigan Medical School, graduating in 1985.
How many Ophthalmology providers in Illinois work at ambulatory surgery centers?
186 Ophthalmology surgeons and proceduralists in Illinois are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, Gregory Doren among them. The Illinois Ophthalmology directory lists each one by city with credential, NPI, and center affiliations.
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