ADDICTION CENTER OF NASHVILLE LLC
NPI 1649764911
Internal Medicine - Addiction Medicine in Columbia, TN

Q: What is Addiction Center Of Nashville LLC's NPI number?

The NPI number for Addiction Center Of Nashville LLC is 1649764911. It was assigned to this organization in the NPPES registry on June 19, 2018. The provider is doing business as Ruth Clinic.

Q: What is Addiction Center Of Nashville LLC's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Addiction Medicine, with taxonomy code 207RA0401X.

Active since June 19, 2018CLIA 44D2178490 · Waiver

1300 HATCHER LN STE 5, COLUMBIA, TN 38401(931) 548-3177(931) 548-3177 Get Directions Write a Review

NPPES record last updated: June 30, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Oct 17, 2019, Jun 19, 2018 (2 updates tracked since 2018).

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About Addiction Center Of Nashville Llc NPPES

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

ADDICTION CENTER OF NASHVILLE LLC (NPI 1649764911), doing business as Ruth Clinic, is a healthcare organization registered as an addiction medicine in Columbia, Tennessee and active in the NPI registry since June 2018. The organization holds a CLIA Waiver certificate valid through February 3, 2028, maintains a secondary practice location in Columbia, and lists Ruth Marcia Rothman, Ceo, as its authorized official.

NPPES Registry Identity

NPI1649764911

Entity TypeOrganization

Primary Taxonomy207RA0401X

Legal Business NameADDICTION CENTER OF NASHVILLE LLC

Location Address1300 HATCHER LN STE 5Columbia, TN 38401-3554

Mailing Address1300 Hatcher Ln Ste 5Columbia, TN 38401-3554 · (931) 548-3177 · Fax (931) 548-3177

Phone(931) 548-3177

Fax(931) 548-3177

Organization SubpartNo

Authorized OfficialRuth Marcia RothmanCeo · (931) 548-3177

Enumeration DateJune 19, 2018

Last NPPES UpdateJune 30, 20262 updates tracked since enumeration

NPPES CertifiedJune 30, 2026

✔ NPI 1649764911 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Addiction MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207RA0401X

Definition

An internist doctor of osteopathy that specializes in the treatment of addiction disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine can obtain a Certificate of Added Qualifications in the field of Addiction Medicine.

1300 HATCHER LN STE 5, Columbia, TN 38401

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Other Names 1

Doing Business AsRuth Clinic

Secondary Practice Location 1

Location 11300 Hatcher Ln Ste 5Columbia, TN 38401-3554 · Phone (931) 548-3177 · Fax (931) 548-3177

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Addiction Center Of Nashville Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 6 clinicians reassign Medicare billing to Addiction Center Of Nashville LLC, which bills Medicare for the services they deliver. They are listed nearest first.

Clinicians, nearest first (6)

Anthony Ekwo, M.D. MPH

Psychiatry

NPI 1114209301

391 WALLACE RD STE 304
Nashville, TN 37211

(615) 567-3489

✔ PECOS✔ Accepts Medicare38 mi

Ashlee Lewis, FNP

Nurse Practitioner

NPI 1962874230

2500 CHARLOTTE AVE
Nashville, TN 37209

(615) 340-7781

✔ PECOS40 mi

Puja Pape, M.D.

Family Practice

NPI 1982054532

1020 N HIGHLAND AVE STE A
Murfreesboro, TN 37130

(615) 396-6620

✔ PECOS✔ Accepts Medicare42 mi

Sarah Motorny, D.O.

Family Practice

NPI 1316173347

687 LONG HOLLOW PIKE
Goodlettsville, TN 37072

(515) 822-1320

✔ PECOS✔ Accepts Medicare55 mi

Nicholas Tsambassis, M.D.

Internal Medicine

NPI 1174628523

127 DEAN DRIVE
Clarksville, TN 37040

(931) 906-9473

✔ PECOS65 mi

Sandya Gunasekera, MD

Psychiatry

NPI 1164473492

240 N TILLOTSON AVE
Muncie, IN 47304

(765) 288-1928

✔ PECOS329 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 44D2178490

Addiction Center Of Nashville Dba Ruth Clinic · Columbia, TN

Active · expires Feb 3, 2028

CLIA Number44D2178490

Laboratory TypePhysician Office

Certificate Effective DateFebruary 4, 2026

Certificate Expiration DateFebruary 3, 2028

Laboratory DirectorAnthony C. Ekwo

Laboratory Phone(931) 548-3177

Laboratory LocationAddiction Center Of Nashville Dba Ruth Clinic1300 Hatcher Ln, Ste 5, Columbia, TN 38401

CLIA data matches this NPI record on: Address Name Phone

This certificate is issued to a laboratory to perform only waived tests.

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 Addiction Center Of Nashville LLC's NPI number?

The NPI number for Addiction Center Of Nashville LLC is 1649764911. It was assigned to this organization in the NPPES registry on June 19, 2018. The provider is doing business as Ruth Clinic.

Where is Addiction Center Of Nashville LLC located?

Addiction Center Of Nashville LLC is located at 1300 Hatcher Ln Ste 5, Columbia, TN 38401. The listed phone number is (931) 548-3177.

What is Addiction Center Of Nashville LLC's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Addiction Medicine, with taxonomy code 207RA0401X.

Is Addiction Center Of Nashville LLC enrolled in Medicare?

Yes. Addiction Center Of Nashville LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Addiction Center Of Nashville LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 6 clinicians reassign their Medicare billing to Addiction Center Of Nashville LLC, in Family Practice, Internal Medicine, Nurse Practitioner and Psychiatry. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Addiction Center Of Nashville LLC hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 44D2178490) is associated with this NPI, valid through February 3, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Addiction Center Of Nashville LLC was last updated on June 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months 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.