John AllenM.D.
John Allen, M.D. is an Ophthalmology provider in Columbus, OH affiliated with 1 ambulatory surgery center in OH, as of July 2026.
- NPI1821084096
- Registered2005
- Centers1
- StateOH
- Class of1986
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.
John Allen at a glance
- Provider
- John Allen
- Credential
- M.D.
- Specialty
- Ophthalmology
- Procedures
- Ophthalmology CPT codes
- Location
- Columbus, OH
- Medical school
- Ohio State University College of Medicine
- Graduated
- 1986
- NPI registered
- 2005
- NPI
- 1821084096
- 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 John Allen practice?
John Allen, M.D. is based in Columbus, OH and is affiliated with 1 ambulatory surgery center: Upper Arlington Surgery Center LTD Dba Riverside Outpatient Surgery Center in Columbus, OH. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is John Allen's NPI number?
John Allen's National Provider Identifier (NPI) is 1821084096, registered in 2005. Specialty on record: Ophthalmology; credential M.D.
Where did John Allen go to medical school?
John Allen, M.D. attended Ohio State University College of Medicine, graduating in 1986.
How many Ophthalmology providers in Ohio work at ambulatory surgery centers?
139 Ophthalmology surgeons and proceduralists in Ohio are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, John Allen among them. The Ohio Ophthalmology directory lists each one by city with credential, NPI, and center affiliations.
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