Mallory Welter Scelfo, FNP-C

Primary specialty

Family Nurse PractitionerTaxonomy code 363LF0000X

License

228816 Issued in OK

Practice address

206 Wanderlust CT
Johnson City, TN 37604-3248

Phone

(228) 860-7831

NPI assigned

Feb 5, 2024

Last updated

Jun 9, 2026By the provider in NPPES

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in TN

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.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Practice roles

Locations

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.

• Allergy Associates, P.a.

  dba The Allergy, Asthma & Sinus Center

  • Specialist
  • Knoxville, TN
  • NPI 1073508347
  Medicare reassignment NPD
• Allergy Associates, PA

  dba The Allergy Asthma and Sinus Center

  • Durable Medical Equipment & Medical Supplies
  • Knoxville, TN
  • NPI 1932566734
  NPD
• Allergy Associates, PA

  • Specialist
  • Greeneville, TN
  • NPI 1972743060
  NPD (past)
• Leconte Radiology PC

  • Diagnostic Radiology Physician
  • Maryville, TN
  • NPI 1447210109
  NPD (past)

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

{
    "created_epoch": "1707091200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1780963200000",
    "number": "1467215285",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "206 WANDERLUST CT",
            "city": "JOHNSON CITY",
            "state": "TN",
            "postal_code": "376043248",
            "telephone_number": "228-860-7831"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "206 WANDERLUST CT",
            "city": "JOHNSON CITY",
            "state": "TN",
            "postal_code": "376043248",
            "telephone_number": "228-860-7831"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SCELFO",
        "first_name": "MALLORY",
        "middle_name": "WELTER",
        "credential": "FNP-C",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2024-02-05",
        "last_updated": "2026-06-09",
        "certification_date": "2026-06-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "261QM2500X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Medical Specialty",
            "state": "NU",
            "license": null,
            "primary": false
        },
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "OK",
            "license": "228816",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Stephen Thomas Sauer
• John Logan Saunders
• John N. Sawaf, DO
• Melinda Sawyer
• Brianna Teague Scanlan, M.S. CCC-SLP
• Tiffany Schack
• Laura Schaffler
• Laken Ann Schang, LCSW
• Sarah A Scharfstein, AUD
• Tammy Scheel

• Family Nurse Practitioner in Johnson City, TN
• Providers in Johnson City, TN by specialty
• Family Nurse Practitioner in Tennessee

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 9, 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.