DR. WILLIAM ABBOTT HARRIS MD
NPI 1801410188
Pediatrics in Charleston, SC
About Dr. William Abbott Harris Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM ABBOTT HARRIS MD (NPI 1801410188) is an individual pediatrics provider in Charleston, South Carolina, licensed in South Carolina (84311) and active in the NPI registry since June 2020. He is enrolled in Medicare PECOS and is a graduate of Medical University Of South Carolina College Of Medicine (2020).
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. William Abbott Harris Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show William Harris reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Charleston, SC 29414
- Reassigned Medicare billing, South Carolina enrollment
- Medicare enrollment name: Bon Secours St Francis Xavier Hospital Inc
- 375 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 29425 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CHARLESTON, SC 29425
CHARLESTON, SC 29425
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 William Harris's NPI number?
The NPI number for William Harris is 1801410188. It was assigned to this individual provider in the NPPES registry on June 3, 2020.
Where is William Harris located?
William Harris practices at 10 Mcclennan Banks Drive, Charleston, SC 29425. The listed phone number is (843) 792-1414.
What is William Harris's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is William Harris enrolled in Medicare?
Yes. William Harris is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for William Harris's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Harris reassigns Medicare benefits to Bon Secours St. Francis Xavier Hosptial, Inc. (Charleston, SC). The 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 William Harris's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Harris accept?
Health plans from UnitedHealthcare list William Harris 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 William Harris was last updated on June 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months 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. William Abbott Harris, MD · NPI 1801410188
Pediatrics physician in Charleston, South Carolina. Individual provider, active in the CMS NPPES registry since June 3, 2020.
## Identity
- **NPI:** 1801410188 (Entity type: Individual)
- **Enumerated:** June 3, 2020
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** 84311 (South Carolina)
- **Sole proprietor:** No
## Practice location
- **Address:** 10 MCCLENNAN BANKS DRIVE, Charleston, SC 29425-0001
- **Phone:** (843) 792-1414
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Bon Secours St. Francis Xavier Hosptial, Inc. (NPI 1578929634, Charleston, SC), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Medical University Of South Carolina College Of Medicine, class of 2020
## Record status
- **NPPES last updated:** June 17, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1801410188) · Data from the CMS NPPES public registry.