GHS OCONEE MEMORIAL HOSPITAL
NPI 1275941528
General Acute Care Hospital in Seneca, SC
About Ghs Oconee Memorial Hospital NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GHS OCONEE MEMORIAL HOSPITAL (NPI 1275941528) is a healthcare organization registered as a general acute care hospital in Seneca, South Carolina and active in the NPI registry since July 2014. The organization lists Michael C. Riordan, President / Ceo, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Ghs Oconee Memorial Hospital is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
733Medicare enrollment records show 733 clinicians reassign Medicare billing to Ghs Oconee Memorial Hospital, which bills Medicare for the services they deliver. Of these, 15 practice at this address and 45 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 50
Nearest to this location (20)
See all 733Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Quality Ratings CMS Care Compare
Quality and patient-experience ratings for Prisma Health Oconee Memorial Hospital (CMS certification number 420009), from CMS Care Compare.
Prisma Health Oconee Memorial Hospital
Acute Care Hospitals · Seneca, SCPatient Experience
HCAHPS patient survey · Jan 2023 – Dec 2023Complications & Deaths 18
Infections 5
Unplanned Hospital Visits 13
Timely & Effective Care 20
Maternal Health 3
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 Greenville Health System's NPI number?
The NPI number for Greenville Health System is 1275941528. It was assigned to this organization in the NPPES registry on July 31, 2014. The provider is doing business as Ghs Oconee Memorial Hospital.
Where is Greenville Health System located?
Greenville Health System is located at 298 Memorial Dr, Seneca, SC 29672. The listed phone number is (864) 482-3100.
What is Greenville Health System's specialty?
The primary specialty registered for this NPI is General Acute Care Hospital with taxonomy code 282N00000X.
Is Greenville Health System enrolled in Medicare?
Yes. Greenville Health System is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Greenville Health System?
According to the CMS Revalidation Reassignment List (October 2026 release), 733 clinicians in 50 Medicare specialties reassign their Medicare billing to Greenville Health System. A 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 the clinician's services. The largest specialties are Certified Registered Nurse Anesthetist (CRNA) (147), Emergency Medicine (56) and Internal Medicine (50). Of these, 15 practice at this address and 45 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Is Greenville Health System a Medicare-certified hospital?
Yes. Prisma Health Oconee Memorial Hospital is a Medicare-certified hospital (Acute Care Hospitals). The hospital provides emergency services.
What quality rating does Greenville Health System have?
CMS rates Prisma Health Oconee Memorial Hospital 3 out of 5 stars overall on Care Compare, based on measures of safety, patient experience and outcomes. The full measure detail is in the Hospital Quality Ratings section above.
What insurance does Greenville Health System accept?
Health plans from BlueCross BlueShield of South Carolina and InStil Health list Greenville Health System 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 Greenville Health System was last updated on March 30, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# Ghs Oconee Memorial Hospital · NPI 1275941528
General Acute Care Hospital organization in Seneca, South Carolina. Organization record, active in the CMS NPPES registry since July 31, 2014.
## Identity
- **NPI:** 1275941528 (Entity type: Organization)
- **Enumerated:** July 31, 2014
- **Primary specialty:** General Acute Care Hospital · taxonomy 282N00000X
- **Legal business name:** Greenville Health System
- **Organization subpart:** No
- **Authorized official:** Michael Riordan, PRESIDENT / CEO
## Practice location
- **Address:** 298 MEMORIAL DR, Seneca, SC 29672-9443
- **Phone:** (864) 482-3100
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 733 clinicians in 50 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Certified Registered Nurse Anesthetist (CRNA) (147), Emergency Medicine (56), Internal Medicine (50); 15 practice at this address and 45 within 10 miles; [full list](https://npiprofile.com/npi/1275941528/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 30, 2015
- **Other identifiers:** Medicare OSCAR/certification 420009 (SC)
---
Source: [NPI Profile](https://npiprofile.com/npi/1275941528) · Data from the CMS NPPES public registry.