T DARRELL THOMAS MD
NPI 1477527901
Psychiatry & Neurology - Neurology in Knoxville, TN

Q: What is T Thomas's NPI number?

The NPI number for T Thomas is 1477527901. It was assigned to this individual provider in the NPPES registry on February 13, 2006.

Q: What is T Thomas's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

Q: When was this NPI record last updated?

The NPPES record for T Thomas was last updated on November 8, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 years 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.

Active since February 13, 2006PECOS Enrolled

501 20TH ST, SUITE 505, KNOXVILLE, TN 37916(865) 546-0157(865) 546-6144 Get Directions Write a Review

NPPES record last updated: November 8, 2018. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About T Darrell Thomas Md NPPES

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

T DARRELL THOMAS MD (NPI 1477527901) is an individual neurology provider in Knoxville, Tennessee, licensed in Tennessee (TN020467) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1477527901

Entity TypeIndividualMale

Primary Taxonomy2084N0400X

Provider Legal NameT DARRELL THOMASCredential: MD

Location Address501 20TH ST, SUITE 505Knoxville, TN 37916-1809

Mailing Address501 20th St Ste 505Knoxville, TN 37916-1869 · (865) 546-0157 · Fax (865) 546-6144

Phone(865) 546-0157

Fax(865) 546-6144

Sole ProprietorNo

Enumeration DateFebruary 13, 2006

Last NPPES UpdateNovember 8, 2018

✔ NPI 1477527901 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · NeurologyAllopathic & Osteopathic Physicians

Taxonomy Code2084N0400X

License✔ Licensed in TN · TN020467

Definition

A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.

501 20TH ST, Knoxville, TN 37916

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Other Identifiers 2

OtherTN020467TN · License

Medicaid3858947TN

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

T Darrell Thomas Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show T Thomas reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Fort Sanders Regional Medical Center

0.1 mi

General Acute Care Hospital

1901 W CLINCH AVE
Knoxville, TN 37916

Reassigned Medicare billing, Tennessee enrollment
28 clinicians in this Medicare group

NPI 1942294814 (865) 374-3000

Covenant Medical Group, Inc.

12 mi

Family Medicine

1420 CENTERPOINT BLVD
Knoxville, TN 37932

Reassigned Medicare billing, Tennessee enrollment
504 clinicians in this Medicare group

NPI 1457302010 (865) 374-5200

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37916 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$121.80 typical visit price

range $52.64 – $160.89

Typical copayment $30.45 (range $13.16 – $40.22)

Most-billed visit code 99204

Established Patient

$93.60 typical visit price

range $16.72 – $131.41

Typical copayment $23.40 (range $4.18 – $32.85)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

DR. JAMES WIKE M.D.

Anesthesiology (Pain Medicine)

501 20TH ST, SUITE 606
KNOXVILLE, TN 37916

Knox County (865) 546-8040

ABNER MICHAEL GLOVER M.D.

Colon & Rectal Surgery

501 20TH ST, SUITE 501
KNOXVILLE, TN 37916

Knox County (865) 525-4109

MICHELLE L PALMER CRNA

Nurse Anesthetist, Certified Registered

501 20TH ST, SUITE 606
KNOXVILLE, TN 37916

Knox County (865) 546-8040

KRISTIN BURNETTE FNP

Nurse Practitioner (Family)

501 20TH ST, SUITE 404
KNOXVILLE, TN 37916

Knox County (865) 522-6964

ELIZABETH STEVENS CRNA

Nurse Anesthetist, Certified Registered

501 20TH ST, SUITE 606
KNOXVILLE, TN 37916

Knox County (865) 546-8040

GREGORY WILLIAM HAGOPIAN CRNA

Nurse Anesthetist, Certified Registered

501 20TH ST, SUITE 606
KNOXVILLE, TN 37916

Knox County (865) 546-8040

WANDA WHITE CRNA

Nurse Anesthetist, Certified Registered

501 20TH ST, SUITE 606
KNOXVILLE, TN 37916

Knox County (865) 546-8040

MARK S MUMFORD MD

Anesthesiology

501 20TH ST
KNOXVILLE, TN 37916

Knox County (865) 546-8040

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 T Thomas's NPI number?

The NPI number for T Thomas is 1477527901. It was assigned to this individual provider in the NPPES registry on February 13, 2006.

Where is T Thomas located?

T Thomas practices at 501 20th St Suite 505, Knoxville, TN 37916. The listed phone number is (865) 546-0157.

What is T Thomas's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

Is T Thomas enrolled in Medicare?

Yes. T Thomas is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for T Thomas's services?

According to the CMS Revalidation Reassignment List (October 2026 release), T Thomas reassigns Medicare benefits to 2 organizations: Fort Sanders Regional Medical Center (Knoxville, TN) and Covenant Medical Group, Inc. (Knoxville, TN). Each 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 T Thomas's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for T Thomas was last updated on November 8, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 years 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.