SETH WILLIAMS MD
NPI 1225583347
Surgery in South Charleston, WV
About Seth Williams Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SETH WILLIAMS MD (NPI 1225583347) is an individual surgery provider in South Charleston, West Virginia, licensed in West Virginia (35547) and active in the NPI registry since August 2016. He is enrolled in Medicare PECOS, is affiliated with Thomas Memorial Hospital, and maintains a secondary practice location in Charleston.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 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
Seth Williams Md 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 Seth Williams reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
South Charleston, WV 25309
- Reassigned Medicare billing, West Virginia enrollment
- 466 clinicians in this Medicare group
Madison, WV 25130
- Reassigned Medicare billing, West Virginia enrollment
- Also billed through NPI 1639135221 (West Virginia)
- 159 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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Thomas Memorial Hospital
Acute Care Hospitals · South Charleston, WVBoone Memorial Hospital
Critical Access Hospitals · Madison, WVPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 25309 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 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SOUTH CHARLESTON, WV 25309
SOUTH CHARLESTON, WV 25309
SOUTH CHARLESTON, WV 25309
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 Seth Williams's NPI number?
The NPI number for Seth Williams is 1225583347. It was assigned to this individual provider in the NPPES registry on August 18, 2016.
Where is Seth Williams located?
Seth Williams practices at 4607 Maccorkle Ave SW Ste 400, South Charleston, WV 25309. The listed phone number is (304) 767-7900.
What is Seth Williams's specialty?
The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.
Is Seth Williams enrolled in Medicare?
Yes. Seth Williams 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 Seth Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Seth Williams reassigns Medicare benefits to 2 organizations: Ths Physician Partners Inc (South Charleston, WV) and Boone Memorial Hospital, Inc (Madison, WV). 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 Seth Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Seth Williams accept?
Health plans from CareSource and Highmark Blue Cross Blue Shield West Virginia list Seth Williams 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.
Is Seth Williams affiliated with any hospitals?
According to CMS data, Seth Williams is affiliated with Thomas Memorial Hospital and Boone Memorial Hospital.
When was this NPI record last updated?
The NPPES record for Seth Williams was last updated on July 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Seth Williams, MD · NPI 1225583347
Surgery physician in South Charleston, West Virginia. Individual provider, active in the CMS NPPES registry since August 18, 2016.
## Identity
- **NPI:** 1225583347 (Entity type: Individual)
- **Enumerated:** August 18, 2016
- **Primary specialty:** Surgery · taxonomy 208600000X
- **State license:** 35547 (West Virginia)
- **Sole proprietor:** No
## Practice location
- **Address:** 4607 MACCORKLE AVE SW STE 400, South Charleston, WV 25309-1364
- **Phone:** (304) 767-7900
## 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): Ths Physician Partners Inc (NPI 1871866806, South Charleston, WV); Boone Memorial Hospital, Inc (NPI 1801039565, Madison, WV) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Northwestern University Feinberg Medical School, class of 2020
## Record status
- **NPPES last updated:** July 15, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1225583347) · Data from the CMS NPPES public registry.