Samuel Spears Littlejohn, MD

Primary specialty

Pediatric Cardiology PhysicianTaxonomy code 2080P0202X

License

77191 Issued in TN

Practice address

2018 Clinch Avenue South Tower Second Floor
Knoxville, TN 37916

Phone

(865) 522-0420

Fax

(877) 801-6771

NPI assigned

Apr 13, 2019

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in NC

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

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

{
    "created_epoch": "1555113600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1788220800000",
    "number": "1205399409",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 50068",
            "city": "KNOXVILLE",
            "state": "TN",
            "postal_code": "379500068",
            "telephone_number": "865-541-8895",
            "fax_number": "865-633-4808"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2018 CLINCH AVENUE SOUTH TOWER SECOND FLOOR",
            "city": "KNOXVILLE",
            "state": "TN",
            "postal_code": "37916",
            "telephone_number": "865-522-0420",
            "fax_number": "877-801-6771"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LITTLEJOHN",
        "first_name": "SAMUEL",
        "middle_name": "SPEARS",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-04-13",
        "last_updated": "2026-09-01",
        "certification_date": "2026-09-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2080P0202X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Pediatric Cardiology",
            "state": "TN",
            "license": "77191",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "Q049667",
            "state": "TN"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Mary Ellen Little, P.T.A.
• Sean Martin Little, NP
• Windi Lou Little
• Thomas Littlefield, MD
• Alexandra Munson Littlejohn, RD
• April Littleton, M.A., CCC-SLP
• Christel Stone Littleton
• Lucas Craig Littleton, DO
• Peggy Anne Littmann, RPH
• Kayleigh McDaniel Litton, D.O.

• Pediatric Cardiology Physician in Knoxville, TN
• Providers in Knoxville, TN by specialty
• Pediatric Cardiology Physician in Tennessee

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 1, 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.