Individual provider Active NPI

Madeline Abigail Twardzik, M.A.

  • Speech-Language Pathologist
  • Rockwall, TX
National Provider Identifier
1649872607
Registry record updated Aug 29, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Speech-Language PathologistTaxonomy code 235Z00000X
License
120320 Issued in TX
Practice address
789 Justin Rd
Rockwall, TX 75087-4840
Phone
(972) 771-5731
NPI assigned
Nov 13, 2020
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Aug 29, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Speech-Language Pathologist 235Z00000X 120320 TX Primary
Behavior Technician 106S00000X

Addresses

Primary practice location

789 Justin Rd
Rockwall, TX 75087-4840

Mailing address

789 Justin Rd
Rockwall, TX 75087-4840
Phone (972) 771-5731

Other practice location 1

911 N Goliad St
Rockwall, TX 75087-2230
Phone (469) 458-9021

Other names 1

  • Madeline Abigail Quinn Former name

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in TX

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20260506004234 TX Practitioner - Qualified Speech Language Pathologist 6204304397 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Qualified Speech Language Pathologist
Education
Other, 2022
Medicare assignment
May accept Medicare assignment

Practice addresses (Care Compare)

7600 Chevy Chase Dr
Suite 300
Austin, TX 78752-1503

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Master of Arts

State licenses

LicenseStateTypeSpecialty
120320TXMDSpeech-Language Pathologist

Practice roles

OrganizationSpecialtyStatusNew patients
Behavioral Transformations, LLC PastSince Mar 1, 2024 Accepting new patients

Organizations & group practices 2

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": "1605225600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1756425600000",
    "number": "1649872607",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "789 JUSTIN RD",
            "city": "ROCKWALL",
            "state": "TX",
            "postal_code": "750874840",
            "telephone_number": "972-771-5731"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "789 JUSTIN RD",
            "city": "ROCKWALL",
            "state": "TX",
            "postal_code": "750874840",
            "telephone_number": "972-771-5731"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "911 N Goliad St",
            "address_purpose": "LOCATION",
            "city": "Rockwall",
            "state": "TX",
            "postal_code": "750872230",
            "country_code": "US",
            "telephone_number": "469-458-9021",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "TWARDZIK",
        "first_name": "MADELINE",
        "middle_name": "ABIGAIL",
        "credential": "M.A.",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2020-11-13",
        "last_updated": "2025-08-29",
        "certification_date": "2025-08-29",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "235Z00000X",
            "taxonomy_group": "",
            "desc": "Speech-Language Pathologist",
            "state": "TX",
            "license": "120320",
            "primary": true
        },
        {
            "code": "106S00000X",
            "taxonomy_group": "",
            "desc": "Behavior Technician",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "MADELINE",
            "last_name": "QUINN",
            "middle_name": "ABIGAIL",
            "credential": "M.A.",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

Other providers in Rockwall, TX

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 29, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.