Quick answers
- Where does John C. Witherell see patients?
- Medicare's clinician data lists 3 practice locations, including Chester, PA, Glen Mills, PA and Philadelphia, PA. Call before your visit to confirm the address.
- What is John C. Witherell's specialty?
- Medicare lists Ophthalmology as the primary specialty.
- Does John C. Witherell accept Medicare assignment?
- Yes. Medicare's clinician data says John C. Witherell accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for John C. Witherell?
- (610) 874-5261, as listed in official Medicare / NPI Registry data.
- What is John C. Witherell's NPI number?
- 1811984206. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where John C. Witherell is enrolled with Medicare (CMS data updated 2026-10-02).
- 30 Medical Ctr Blvd, Suite 104Chester, PA 19013 (610) 874‑5261
- 300 Evergreen Dr, Suite 100Glen Mills, PA 19342 (610) 874‑5261
- 840 Walnut StPhiladelphia, PA 19107 (215) 928‑3041
Group practices
Medicare enrollment lists John C. Witherell as a member of these groups (CMS data updated 2026-10-02).
- Wills Eye Ophthalmology Clinic, Inc147 clinicians in the group
- Ophthalmic Surgical Associates Inc5 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Pennsylvania
Clinicians with the same Medicare primary specialty in Pennsylvania — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Jefferson Medical College Of Thomas Jefferson University |
| Graduation year | 1994 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1811984206 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians