DR. JOHN C WITHERELL M.D.
NPI 1811984206
Ophthalmology in Chester, PA
About Dr. John C Witherell M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN C WITHERELL M.D. (NPI 1811984206) is an individual ophthalmology provider in Chester, Pennsylvania, licensed in Pennsylvania (MD060067L) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS and is a graduate of Jefferson Medical College Of Thomas Jefferson University (1994).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. John C Witherell M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show John Witherell reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chester, PA 19013
- Reassigned Medicare billing, Pennsylvania enrollment
- 8 clinicians in this Medicare group
Philadelphia, PA 19107
- Reassigned Medicare billing, Pennsylvania enrollment
- 230 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 16
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 19013 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 6
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is John Witherell's NPI number?
The NPI number for John Witherell is 1811984206. It was assigned to this individual provider in the NPPES registry on September 30, 2005.
Where is John Witherell located?
John Witherell practices at 30 Medical Center Blvd Ste 104, Chester, PA 19013. The listed phone number is (610) 874-5261.
What is John Witherell's specialty?
The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.
Is John Witherell enrolled in Medicare?
Yes. John Witherell is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for John Witherell's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Witherell reassigns Medicare benefits to 2 organizations: Ophthalmic Surgical Associates Inc (Chester, PA) and Wills Eye Ophthalmology Clinic, Inc (Philadelphia, PA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Witherell's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Witherell accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Buckeye Health Plan, Anthem Blue Cross and Blue Shield and Blue Cross Blue Shield of Wyoming and 14 other insurers list John Witherell as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for John Witherell was last updated on November 1, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. John C Witherell, M.D. · NPI 1811984206
Ophthalmology physician in Chester, Pennsylvania. Individual provider, active in the CMS NPPES registry since September 30, 2005.
## Identity
- **NPI:** 1811984206 (Entity type: Individual)
- **Enumerated:** September 30, 2005
- **Primary specialty:** Ophthalmology · taxonomy 207W00000X
- **State license:** MD060067L (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 30 MEDICAL CENTER BLVD STE 104, Chester, PA 19013-3955
- **Phone:** (610) 874-5261 · **Fax:** (610) 874-0318
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Ophthalmic Surgical Associates Inc (NPI 1619921327, Chester, PA); Wills Eye Ophthalmology Clinic, Inc (NPI 1184624009, Philadelphia, PA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Jefferson Medical College Of Thomas Jefferson University, class of 1994
## Record status
- **NPPES last updated:** November 1, 2020
- **Other identifiers:** Medicaid 0117305590 (PA)
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Source: [NPI Profile](https://npiprofile.com/npi/1811984206) · Data from the CMS NPPES public registry.