Sumter Treatment Specialists LLC

Primary specialty

Methadone ClinicTaxonomy code 261QM2800X

Legal business name

SUMTER TREATMENT SPECIALISTS LLC

Practice address

1031 Broad St
Sumter, SC 29150-2504

Phone

(803) 848-0035

NPI assigned

Oct 1, 2019

Organization subpart

No

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

Authorized official

Name

Amy Nieman

Title

Director of Payer Credentialing

Phone

(513) 544-1033

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in SC

Opioid treatment program

Medicare-enrolled since Apr 17, 2021

Enrollment records 1

Locations

Practitioners 4

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

• Alan David Laszczynski, D.O.

  • Internal Medicine Physician
  • West Columbia, SC
  • NPI 1104110329
  NPD
• Anna Tatira Mataruka, FNP

  • Family Nurse Practitioner
  • Rock Hill, SC
  • NPI 1497204119
  NPD
• Andrew Thomas Simpson, D.O.

  • Internal Medicine Physician
  • Spartanburg, SC
  • NPI 1518282367
  NPD
• Robin R Machajewski, NP-C

  • Family Nurse Practitioner
  • Lexington, SC
  • NPI 1700418340
  NPD (past)

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

{
    "created_epoch": "1569888000000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1788393600000",
    "number": "1831730928",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4600 MONTGOMERY RD STE 400",
            "city": "CINCINNATI",
            "state": "OH",
            "postal_code": "452122600",
            "telephone_number": "513-873-1269"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1031 BROAD ST",
            "city": "SUMTER",
            "state": "SC",
            "postal_code": "291502504",
            "telephone_number": "803-848-0035"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "SUMTER TREATMENT SPECIALISTS LLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2019-10-01",
        "last_updated": "2026-09-03",
        "certification_date": "2026-09-03",
        "status": "A",
        "authorized_official_last_name": "NIEMAN",
        "authorized_official_first_name": "AMY",
        "authorized_official_title_or_position": "DIRECTOR OF PAYER CREDENTIALING",
        "authorized_official_telephone_number": "513-544-1033"
    },
    "taxonomies": [
        {
            "code": "261QM2800X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Methadone",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Sumter School District
• Sumter School District 17
• Sumter School District Two
• Sumter Senior Services, Inc.
• Sumter Surgical Associate
• Sumter Urological Associates
• Sumter Urological, LLC
• Sumter Valley Nursing and Rehab Center LLC (Sumter Valley Nursing and Rehab Center)
• Rozalind Janell Sumter
• Superior Transportation (Rachiel Joe)

• Methadone Clinic in Sumter, SC
• Providers in Sumter, SC by specialty
• Methadone Clinic in South Carolina

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 3, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.