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DILIGENT MEDICAL CARE, PLLC
NPI 1972976256
Internal Medicine - Addiction Medicine in Knoxville, TN

Active since November 09, 2015CLIA 44D2079560 · Waiver
4038 GAP RD, SUITE 101, KNOXVILLE, TN 37912(865) 689-5757(865) 689-5755 Get Directions Write a Review

NPPES record last updated: May 8, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: May 8, 2026, Feb 22, 2016, Nov 9, 2015 (3 updates tracked since 2015).

About Diligent Medical Care, Pllc NPPES

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

DILIGENT MEDICAL CARE, PLLC (NPI 1972976256) is a healthcare organization registered as an addiction medicine in Knoxville, Tennessee and active in the NPI registry since November 2015. The organization holds a CLIA Waiver certificate valid through June 17, 2028 and lists Essam M Aghel, President, as its authorized official.

NPPES Registry Identity

NPI1972976256
Entity TypeOrganization
Primary Taxonomy207RA0401X
Legal Business NameDILIGENT MEDICAL CARE, PLLC
Location Address4038 GAP RD, SUITE 101Knoxville, TN 37912-5903
Mailing Address4038 Gap Rd, Suite 101Knoxville, TN 37912-5903 · (865) 689-5757 · Fax (865) 689-5755
Phone(865) 689-5757
Fax(865) 689-5755
Organization SubpartNo
Authorized OfficialEssam M AghelPresident · (865) 689-5757
Enumeration DateNovember 9, 2015
Last NPPES UpdateMay 8, 20263 updates tracked since enumeration
NPPES CertifiedMay 8, 2026
✔ NPI 1972976256 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ 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.
Also ListedInternal MedicineTaxonomy 207R00000X
Also ListedClinic/Center · Primary CareTaxonomy 261QP2300X · License 40298 (TN)
4038 GAP RD, Knoxville, TN 37912
Open in Google Maps ↗

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

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 44D2079560

Diligent Medical Care, PLLC · Knoxville, TN
Active · expires Jun 17, 2028
CLIA Number44D2079560
Laboratory TypePhysician Office
Certificate Effective DateJune 18, 2026
Certificate Expiration DateJune 17, 2028
Laboratory DirectorEssam Aghel
Laboratory Phone(865) 689-5757
Laboratory LocationDiligent Medical Care, PLLC4038 Gap Road, Suite 101, Knoxville, TN 37912
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Other Providers at the Same Location NPPES 20

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

MRS. ELIZABETH R. PETREE BS
Case Manager/Care Coordinator
4038 GAP RD
KNOXVILLE, TN 37912
Knox County (865) 525-0391
MISS JESSICA AMBER KENNEDY M.A.
Counselor (Mental Health)
4038 GAP RD, SUITE 202
KNOXVILLE, TN 37912
Knox County (865) 525-0391
LINDSAY TERRY
Case Manager/Care Coordinator
4038 GAP RD, SUITE 202
KNOXVILLE, TN 37912
Knox County (865) 525-0391
HILLARY L BRUNER
Counselor (Mental Health)
4038 GAP RD, SUITE 202
KNOXVILLE, TN 37912
Knox County (865) 525-0391
MRS. WINDI LOU LITTLE
Case Manager/Care Coordinator
4038 GAP RD, SUITE 202
KNOXVILLE, TN 37912
Knox County (865) 525-0391
MS. KARA LITTLE BSW
Case Manager/Care Coordinator
4038 GAP RD, SUITE 202
KNOXVILLE, TN 37912
Knox County (865) 525-0391
KIM RICKERSON
Social Worker
4038 GAP RD
KNOXVILLE, TN 37912
Knox County (865) 525-0391
MISS KEIA SHARIE LOVELESS B.S.W.
Case Manager/Care Coordinator
4038 GAP RD
KNOXVILLE, TN 37912
Knox County (865) 525-0391

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 Diligent Medical Care, PLLC's NPI number?

The NPI number for Diligent Medical Care, PLLC is 1972976256. It was assigned to this organization in the NPPES registry on November 9, 2015.

Where is Diligent Medical Care, PLLC located?

Diligent Medical Care, PLLC is located at 4038 Gap Rd Suite 101, Knoxville, TN 37912. The listed phone number is (865) 689-5757.

What is Diligent Medical Care, PLLC's specialty?

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

Does Diligent Medical Care, PLLC hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 44D2079560) is associated with this NPI, valid through June 17, 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 Diligent Medical Care, PLLC was last updated on May 8, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.