Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Internal Medicine of Eastside Greer

Legal Medicine in Greer, SC · enumerated 2006 · authorized official William Ellsion, M.D..

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1922076413

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Registry record

Entity type Organization (Type 2)

Legal business name Internal Medicine of Eastside Greer

Practice address 554 Memorial Drive Ext, Ste B, Greer, SC, 29651

Phone (864) 879-7556

Fax (864) 879-3693

Enumeration date Mar 9, 2006

Last updated in NPPES May 1, 2008

Taxonomy & classification

173000000X Legal Medicine Other Service Providers · License 10079 (SC) Primary

Authorized official

Name William Ellsion

Title M.D.

Phone (864) 879-7556

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2008-05-01. Verify at npiregistry.cms.hhs.gov.

Where is Internal Medicine of Eastside Greer located?

The practice location on file with NPPES is in Greer, SC.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-05-01.