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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

GREENWOOD TREATMENT SPECIALISTS
NPI 1417448937
Clinic/Center - Methadone in Greenwood, SC

Active since May 21, 2018CLIA 42D2351350 · Waiver
110 COURT AVE W, GREENWOOD, SC 29646(864) 407-4160(864) 407-4155 Get Directions Write a Review

NPPES record last updated: September 30, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Sep 30, 2026, Jan 13, 2022, May 21, 2018 (3 updates tracked since 2018).

About Greenwood Treatment Specialists NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GREENWOOD TREATMENT SPECIALISTS (NPI 1417448937) is a healthcare organization registered as a methadone in Greenwood, South Carolina and active in the NPI registry since May 2018. The organization holds a CLIA Waiver certificate valid through September 23, 2028 and lists Amy Marie Nieman, Director Of Payer Credentialing, as its authorized official.

NPPES Registry Identity

NPI1417448937
Entity TypeOrganization
Primary Taxonomy261QM2800X
Legal Business NameGREENWOOD TREATMENT SPECIALISTS
Location Address110 COURT AVE WGreenwood, SC 29646-2749
Mailing Address4600 Montgomery Rd Ste 400Cincinnati, OH 45212-2600 · (864) 407-4160 · Fax (864) 407-4155
Phone(864) 407-4160
Fax(864) 407-4155
Organization SubpartNo
Authorized OfficialAmy Marie NiemanDirector Of Payer Credentialing · (513) 544-1003
Enumeration DateMay 21, 2018
Last NPPES UpdateSeptember 30, 20263 updates tracked since enumeration
NPPES CertifiedSeptember 30, 2026
✔ NPI 1417448937 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyClinic/Center · MethadoneAmbulatory Health Care Facilities
Taxonomy Code261QM2800X
Definition
An entity, facility, or distinct part of a facility providing diagnostic, and replacement maintenance treatment services related to individuals with drug addiction.
Also ListedSubstance Abuse Rehabilitation FacilityTaxonomy 324500000X
Also ListedPharmacy · Clinic PharmacyTaxonomy 3336C0002X
110 COURT AVE W, Greenwood, SC 29646
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Absolute Total Care, Ambetter Health, Ambetter of North Carolina and more.Insurance ›

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 42D2351350

Greenwood Treatment Specialists, LLC · Greenwood, SC
Active · expires Sep 23, 2028
CLIA Number42D2351350
Laboratory TypePhysician Office
Certificate Effective DateSeptember 24, 2026
Certificate Expiration DateSeptember 23, 2028
Laboratory DirectorAmy Y. Forrest
Laboratory Phone(864) 407-4160
Laboratory LocationGreenwood Treatment Specialists, LLC519 Monument St, Greenwood, SC 29646
CLIA data matches this NPI record on: Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Medication assisted treatment, methadone; weekly bundle including dispensing and/or administration, substance use counseling, individual and group therapy, and toxicology testing, if performed (provision of the services by a medicare-enrolled opioid treatm G2067
Medication Assisted Treatment (MAT) with methadone is a comprehensive approach to manage opioid addiction. It includes weekly methadone dispensing, substance use counseling, individual and group therapy sessions, and toxicology tests as needed, all provided by a Medicare-enrolled opioid treatment program.
264 services12 patients

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

HAYLEY SMITH MS, CACII
Counselor (Addiction (Substance Use Disorder))
110 COURT AVE W
GREENWOOD, SC 29646
Greenwood County (864) 407-4160

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Greenwood Treatment Specialists's NPI number?

The NPI number for Greenwood Treatment Specialists is 1417448937. It was assigned to this organization in the NPPES registry on May 21, 2018.

Where is Greenwood Treatment Specialists located?

Greenwood Treatment Specialists is located at 110 Court Ave W, Greenwood, SC 29646. The listed phone number is (864) 407-4160.

What is Greenwood Treatment Specialists's specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Methadone, with taxonomy code 261QM2800X.

Does Greenwood Treatment Specialists hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 42D2351350) is associated with this NPI, valid through September 23, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Greenwood Treatment Specialists accept?

Health plans from Ambetter Health, Ambetter from Absolute Total Care, Ambetter of North Carolina and First Choice Next list Greenwood Treatment Specialists as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Greenwood Treatment Specialists was last updated on September 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 45 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.