Gregory Robert Mesa, PA-C

Primary specialty

Physician AssistantTaxonomy code 363A00000X

License

5442 Issued in SC

Practice address

SC House Calls, Inc.
111 Doctors Cir.
Columbia, SC 29203

Phone

(800) 491-0909

NPI assigned

Feb 26, 2007

Last updated

Aug 10, 2026By the provider in NPPES

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

Other identifiers 17

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

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.

Specialty

Physician Assistant

Education

Other, 2000

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Practice addresses (Care Compare)

Hospital & facility affiliations

• Piedmont Medical Center Hospital, Rock Hill, SC, CCN 420002

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: greg.mesa.1@20732.direct.athenahealth.com
• FHIR API: https://api.platform.athenahealth.com/20732/brand/1/csg/1/fhir/r4
• FHIR API: https://fhir4.healow.com/fhir/r4/IIIGDD
• FHIR API: https://fhir4.healow.com/fhir/r4/IIIGDD/Endpoint/IIIGDD

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.

• Metrolina Medical Associates P

  • Internal Medicine Physician
  • Rock Hill, SC
  • NPI 1770741696
  NPD
• Sterling Emergency Services of the Southeast, Inc

  • Emergency Medicine Physician
  • Salisbury, NC
  • NPI 1770541245

  Physician Assistant

  NPD (past)
• TST Medical, P.a.

  • Family Medicine Physician
  • Hendersonville, NC
  • NPI 1053384859
  NPD (past)

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

• Amisub of South Carolina, Inc.

  dba Piedmont Medical Center

  • General Acute Care Hospital
  • Rock Hill, SC
  • NPI 1457382483
  Care Compare affiliation

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

{
    "created_epoch": "1172448000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1786320000000",
    "number": "1023144193",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "SC HOUSE CALLS, INC.",
            "address_2": "111 DOCTORS CIR.",
            "city": "COLUMBIA",
            "state": "SC",
            "postal_code": "29203",
            "telephone_number": "800-491-0909"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "SC HOUSE CALLS, INC.",
            "address_2": "111 DOCTORS CIR.",
            "city": "COLUMBIA",
            "state": "SC",
            "postal_code": "29203",
            "telephone_number": "800-491-0909"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MESA",
        "first_name": "GREGORY",
        "middle_name": "ROBERT",
        "name_prefix": "Mr.",
        "credential": "PA-C",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-02-26",
        "last_updated": "2026-08-10",
        "certification_date": "2026-08-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "SC",
            "license": "5442",
            "primary": true
        },
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "NC",
            "license": "103090",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "348944C",
            "state": "NC"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "STATE LICENSE NUMBER",
            "identifier": "5442",
            "state": "SC"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "WORKERS COMP",
            "identifier": "550847506",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "CHAMPUS",
            "identifier": "550847506",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "SE MEDICARE COMPLETE",
            "identifier": "550847506",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RAILROAD",
            "identifier": "P00163937",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "PREFERRED CARE",
            "identifier": "147223XX",
            "state": null
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "348944A",
            "state": "NC"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "STATE LICENSE NUMBER",
            "identifier": "103090",
            "state": "NC"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "CHAMPUS",
            "identifier": "267311481",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "COMMERCIAL INSURANCE",
            "identifier": "550847506",
            "state": null
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "8913525",
            "state": "NC"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDCOST PREFERRED",
            "identifier": "D1819",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RAILROAD INSURANCE",
            "identifier": "P00163937",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "HUMA HUMANA",
            "identifier": "P61859",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "HUMANA",
            "identifier": "550847506",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RAILROAD",
            "identifier": "DB5806",
            "state": null
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Jennifer Nicole Merrifield, PHD
• Kayona N Merritt
• William M Merritt, MD
• Rosalyn Merriweather, CCC/SLP
• Robert M Mertz, OTR/L
• Joseph Meserve, M.D.
• Anthony J Mesiano Jr., LISW
• Brian Alton Mesimer
• Benson Garrick Messer, MD
• Gayle Benson Messer, NNP

• Physician Assistant in Columbia, SC
• Providers in Columbia, 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 Aug 10, 2026; 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.