Individual provider Active NPI

Thaddeus Leland Dunn, MD

  • Sleep Medicine (Internal Medicine) Physician
  • Wilmington, NC
National Provider Identifier
1275531428
Registry record updated Sep 11, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Sleep Medicine (Internal Medicine) PhysicianTaxonomy code 207RS0012X
License
31493 Issued in NC
Practice address
1090 Medical Center Dr
Wilmington, NC 28401-7353
Phone
(910) 343-3345
Fax
(910) 343-1924
NPI assigned
Jul 12, 2005
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 11, 2025

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Critical Care Medicine (Internal Medicine) Physician 207RC0200X 31493 NC
Pulmonary Disease Physician 207RP1001X 31493 NC
Sleep Medicine (Internal Medicine) Physician 207RS0012X 31493 NC Primary

Addresses

Primary practice location

1090 Medical Center Dr
Wilmington, NC 28401-7353

Mailing address

1090 Medical Center Dr
Wilmington, NC 28401-7353
Phone (910) 343-3345

Other identifiers 4

IdentifierTypeStateIssuer
4828881OtherNCUNITED HEALTHCARE PROVIDE
88073OtherNCMEDOCST PROVIDER NUMBER
8929445MedicaidNC
29445OtherNCBCBS OF NC PROVIDER NUMBE

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
31493NCMDCritical Care Medicine (Internal Medicine) Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Health Sciences Foundation Inc. Past Accepting new patients

Organizations & group practices 1

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

NPI Registry JSON

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

{
    "created_epoch": "1121126400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1275531428",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1090 MEDICAL CENTER DR",
            "city": "WILMINGTON",
            "state": "NC",
            "postal_code": "284017353",
            "telephone_number": "910-343-3345",
            "fax_number": "910-343-1924"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1090 MEDICAL CENTER DR",
            "city": "WILMINGTON",
            "state": "NC",
            "postal_code": "284017353",
            "telephone_number": "910-343-3345",
            "fax_number": "910-343-1924"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DUNN",
        "first_name": "THADDEUS",
        "middle_name": "LELAND",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-07-12",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Critical Care Medicine",
            "state": "NC",
            "license": "31493",
            "primary": false
        },
        {
            "code": "207RP1001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Pulmonary Disease",
            "state": "NC",
            "license": "31493",
            "primary": false
        },
        {
            "code": "207RS0012X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Sleep Medicine",
            "state": "NC",
            "license": "31493",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "UNITED HEALTHCARE PROVIDE",
            "identifier": "4828881",
            "state": "NC"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDOCST PROVIDER NUMBER",
            "identifier": "88073",
            "state": "NC"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "8929445",
            "state": "NC"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BCBS OF NC PROVIDER NUMBE",
            "identifier": "29445",
            "state": "NC"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Wilmington, NC

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.