Individual provider Active NPI

William Lemar Jackson Jr., MD

  • Critical Care Medicine (Internal Medicine) Physician
  • Melbourne, FL
National Provider Identifier
1841243920
Registry record updated Jul 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Critical Care Medicine (Internal Medicine) PhysicianTaxonomy code 207RC0200X
License
ME95860 Issued in FL
Practice address
1350 S Hickory St
Melbourne, FL 32901-3278
Phone
(321) 434-4225
Fax
(321) 434-4247
NPI assigned
May 18, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 13, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Critical Care Medicine (Internal Medicine) Physician 207RC0200X ME95860 FL Primary

Addresses

Primary practice location

1350 S Hickory St
Melbourne, FL 32901-3278

Mailing address

PO Box 561600
Rockledge, FL 32956-1600
Phone (321) 434-4656

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
ME95860FLMDCritical Care Medicine (Internal Medicine) Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Intensimed, LLC Critical Care Medicine 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": "1147910400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1841243920",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 561600",
            "city": "ROCKLEDGE",
            "state": "FL",
            "postal_code": "329561600",
            "telephone_number": "321-434-4656",
            "fax_number": "321-259-5130"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1350 S HICKORY ST",
            "city": "MELBOURNE",
            "state": "FL",
            "postal_code": "329013278",
            "telephone_number": "321-434-4225",
            "fax_number": "321-434-4247"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "JACKSON",
        "first_name": "WILLIAM",
        "middle_name": "LEMAR",
        "name_suffix": "Jr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-05-18",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Critical Care Medicine",
            "state": "FL",
            "license": "ME95860",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Melbourne, FL

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; 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.