John WitherellM.D.
Ophthalmology·Chester, PA
John Witherell, M.D. is an Ophthalmology provider in Chester, PA affiliated with 2 ambulatory surgery centers in PA, as of July 2026.
- NPI1811984206
- Registered2005
- Centers2
- StatePA
- Class of1994
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 Witherell at a glance
- Provider
- John Witherell
- Credential
- M.D.
- Specialty
- Ophthalmology
- Procedures
- Ophthalmology CPT codes
- Location
- Chester, PA
- Medical school
- Jefferson Medical College of Thomas Jefferson University
- Graduated
- 1994
- NPI registered
- 2005
- NPI
- 1811984206
- 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 Witherell practice?
John Witherell, M.D. is based in Chester, PA and is affiliated with 2 ambulatory surgery centers: Riddle Surgical Center LLC in Media, PA and Turks Head Surgery Center LLC in West Chester, PA. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is John Witherell's NPI number?
John Witherell's National Provider Identifier (NPI) is 1811984206, registered in 2005. Specialty on record: Ophthalmology; credential M.D.
Where did John Witherell go to medical school?
John Witherell, M.D. attended Jefferson Medical College of Thomas Jefferson University, graduating in 1994.
How many Ophthalmology providers in Pennsylvania work at ambulatory surgery centers?
228 Ophthalmology surgeons and proceduralists in Pennsylvania are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, John Witherell among them. The Pennsylvania Ophthalmology directory lists each one by city with credential, NPI, and center affiliations.
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