Joseph Williamson III, PA-C

Primary specialty

Physician AssistantTaxonomy code 363A00000X

License

5815 Issued in SC

Practice address

405 Lancaster Ave
Greer, SC 29650-1235

Phone

(864) 977-7000

NPI assigned

Mar 24, 2025

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in SC

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Physician Assistant

Education

Other, 2024

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Self Regional HealthcareGroup PAC ID 4082527742, 159 clinicians

Self Medical GroupGroup PAC ID 6002953916, 393 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Self Regional Healthcare Hospital, Greenwood, SC, CCN 420071

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

State licenses

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Self Regional Healthcare

  dba Montgomery Center for Family Medicine of SRH

  • Family Medicine Physician
  • Greenwood, SC
  • NPI 1326067703
  Medicare reassignment Care Compare group NPD
• Self Medical Group

  • Surgery Physician
  • Greenwood, SC
  • NPI 1982836847
  Medicare reassignment Care Compare group
• Self Medical Group

  • Internal Medicine Physician
  • Greenwood, SC
  • NPI 1407146715
  NPD
• Self Medical Group

  • Diagnostic Radiology Physician
  • Greenwood, SC
  • NPI 1659839694
  NPD
• Self Regional Healthcare

  dba Self Regional Neurology

  • Neurology Physician
  • Greenwood, SC
  • NPI 1285502559
  NPD
• Self Regional Healthcare

  dba Lakelands Ear Nose and Throat

  • Otolaryngology Physician
  • Greenwood, SC
  • NPI 1710786066
  NPD
• Self Regional Healthcare

  dba Self Medical Center Newberry

  • Family Medicine Physician
  • Newberry, SC
  • NPI 1548068398
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Self Regional Healthcare

  dba Pain Management Greenwood

  • Pain Medicine (Anesthesiology) Physician
  • Greenwood, SC
  • NPI 1013867498

  Hospital

  Care Compare affiliation
• Self Regional Healthcare

  dba SRH - Inpatient Services

  • General Acute Care Hospital
  • Greenwood, SC
  • NPI 1023046612
  Care Compare affiliation
• Self Regional Healthcare

  dba SRH - Outpatient Services

  • General Acute Care Hospital
  • Greenwood, SC
  • NPI 1407887003
  Care Compare affiliation
• Self Regional Healthcare

  dba Pain Management Laurens

  • Pain Medicine (Anesthesiology) Physician
  • Clinton, SC
  • NPI 1720938103

  Hospital

  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1742774400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1749513600000",
    "number": "1326849407",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "405 LANCASTER AVE",
            "city": "GREER",
            "state": "SC",
            "postal_code": "296501235"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "405 LANCASTER AVE",
            "city": "GREER",
            "state": "SC",
            "postal_code": "296501235",
            "telephone_number": "864-977-7000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "102 Rockcreek Blvd",
            "address_purpose": "LOCATION",
            "city": "Greenwood",
            "state": "SC",
            "postal_code": "296498915",
            "country_code": "US",
            "telephone_number": "864-725-5020",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "22580 Highway 76 E Ste 300",
            "address_purpose": "LOCATION",
            "city": "Laurens",
            "state": "SC",
            "postal_code": "293608460",
            "country_code": "US",
            "telephone_number": "864-939-1070",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "WILLIAMSON",
        "first_name": "JOSEPH",
        "name_suffix": "III",
        "credential": "PA-C",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2025-03-24",
        "last_updated": "2025-06-10",
        "certification_date": "2025-06-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "SC",
            "license": "5815",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Emily Hendrix Williams, DPT
• Heather Michelle Williams, DC
• Kimberly Lynn Williams, OT
• Latrice B. Williams, LPC, LMHC
• Maribeth Porter Williams, M.D.
• Elizabeth Upchurch Willingham, PH.D., LPC, NCC
• Caitlin Elliott Wilson, FNP-C
• Caroline Wilson, M.D.
• Michael Joseph Wines, PA-C
• Lydia Winslow, M.A., CCC/SLP

• Physician Assistant in Greer, SC
• Providers in Greer, SC by specialty
• Physician Assistant in South Carolina

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 10, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.