NPIMap

Individual provider Active NPI

Alexander John Armstrong, PA-C

  • Physician Assistant
  • Charleston, SC
National Provider Identifier
1881208346
Registry record updated Aug 11, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Physician AssistantTaxonomy code 363A00000X
Practice address
1033 Saint Andrews Blvd
Charleston, SC 29407-7156
Phone
(843) 723-6111
Fax
(843) 727-2973
NPI assigned
Sep 2, 2020
Last updated
Aug 11, 2026By the provider in NPPES
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Aug 11, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Physician Assistant 363A00000X NU Primary

Addresses

Primary practice location

1033 Saint Andrews Blvd
Charleston, SC 29407-7156

Mailing address

PO Box 751649
Charlotte, NC 28275-1649
Phone (888) 472-0043

Other identifiers 1

IdentifierTypeStateIssuer
6542PAMedicaidSC

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in SC
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20240328003113 SC Practitioner - Physician Assistant 4789003070 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Physician Assistant
Education
Other, 2020
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices

Practice addresses (Care Compare)

100 Guild St
Suite 101
Summerville, SC 29486-3021
Phone (843) 792-1414

167 Ashley Ave
Charleston, SC 29425-8908
Phone (843) 792-1414

171 Ashley Ave
Charleston, SC 29425-8908
Phone (843) 792-1414

3601 Ladson Rd
Suite 100
Ladson, SC 29456-4304
Phone (843) 285-2500

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
79.02 of 100Reported as group
Quality
62.41
Promoting interoperability
99
Improvement activities
40

Merit-based Incentive Payment System (MIPS)

Final score
81.85 of 100Reported as group
Quality
72.99
Promoting interoperability
100
Improvement activities
30
Cost
75.18

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Physician Assistant

Practice roles

OrganizationSpecialtyStatusNew patients
University Medical Associates of the Medical University of South Carol Physician Assistant CurrentSince Jul 1, 2024 Accepting new patients

Locations

171 Ashley Ave
Charleston, SC 29425
Phone (843) 792-2123

3601 Ladson Rd
Ste 100
Ladson, SC 29456
Phone (843) 285-2500

Interoperability endpoints

  • Direct secure messaging: aarmstrong501058@direct.musc.edu

Organizations & group practices 3

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.

Hospital & facility affiliations 8

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

NPI Registry JSON

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

{
    "created_epoch": "1599004800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1786406400000",
    "number": "1881208346",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 751649",
            "city": "CHARLOTTE",
            "state": "NC",
            "postal_code": "282751649",
            "telephone_number": "888-472-0043",
            "fax_number": "843-724-2440"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1033 SAINT ANDREWS BLVD",
            "city": "CHARLESTON",
            "state": "SC",
            "postal_code": "294077156",
            "telephone_number": "843-723-6111",
            "fax_number": "843-727-2973"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ARMSTRONG",
        "first_name": "ALEXANDER",
        "middle_name": "JOHN",
        "name_prefix": "Mr.",
        "credential": "PA-C",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2020-09-02",
        "last_updated": "2026-08-11",
        "certification_date": "2026-08-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "NU",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "6542PA",
            "state": "SC"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Charleston, SC

Sources for this page

Verify at the official NPI Registry.