Dr. T Darrell Thomas, MD
- Medicare services, 2019
- 1,050
- Part D claims, 2021
- 33
- Industry payments
- $19,051
- Affiliated sites
- 4
- Medical groups
- 4
- Practice address
- 501 20th St Ste 503 Suite 503, Knoxville, TN 37916
- Practice phone
- Call (865) 331-4321
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Covenant Medical Group - Knoxville (20th St)
Multi-specialty group site · Knoxville, Tennessee
Find Dr. Thomas' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. T Darrell Thomas is a neurologist in Knoxville, Tennessee
Dr. Thomas practices at Covenant Medical Group - Knoxville (20th St) in Knoxville, Tennessee.
Dr. Thomas' NPI, 1477527901, was assigned on February 13, 2006. Dr. Thomas holds Tennessee license TN020467.
- NPI
- 1477527901NPI Registry (opens in a new tab)
- NPI enumeration date
- February 13, 2006
- NPI status
- Active
- Practice phone
- (865) 331-4321
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. T Darrell Thomas practices at Covenant Medical Group - Knoxville (20th St) in Knoxville, Tennessee
Dr. Thomas' primary practice is Covenant Medical Group - Knoxville (20th St), at 501 20th St Ste 503 Suite 503, Knoxville, TN 37916. The practice phone is (865) 331-4321.
- Covenant Medical Group - Knoxville (20th St)501 20th St Ste 503 Suite 503, Knoxville, TN 37916Phone(865) 331-4321
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. T Darrell Thomas is affiliated with 4 sites of care and 4 medical groups
Dr. Thomas' primary practice is Covenant Medical Group - Knoxville (20th St) in Knoxville, Tennessee. The medical group on file is Covenant Medical Group. Dmand AI also links Dr. Thomas to 3 more group practices and clinics and 3 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. T Darrell Thomas' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Thomas practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Covenant Medical Group - Knoxville (20th St) | Available with a free account |
| +3 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. T Darrell Thomas is one of 350 neurologists in Tennessee
Neurology is Dr. Thomas' primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dr. Thomas is licensed in Tennessee.
Specialties and state licenses
- Neurology, TennesseePrimary
Neurologists near Dr. Thomas
Counts of neurologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. T Darrell Thomas billed Medicare for 1,050 services in 2019
CMS data shows 1,050 Medicare services from Dr. Thomas across 13 procedure codes in 2019. Medicare paid $49,370 for them. Every service was in an office.
Dr. Thomas' Medicare services by type, 2018 to 2019
- 2018
- 2019
- Tests and treatments
- 2018: 1,6752019: 57766%
- Office and hospital visits
- 2018: 1,0512019: 38264%
- Surgery
- 2018: 362019: 4628%
- Drugs given in the office
- 2018: 25,7652019: 45100%
Dr. Thomas compared with the Tennessee median for neurologists, 2019
- Dr. Thomas
- Tennessee median
- Medicare services
- 1,050vs 3982.6 times
- Part D claims
- 33vs 63895% below
Medians across 344 neurologists in Tennessee with Dmand AI profiles that report each measure.
Dr. Thomas' most billed Medicare procedure codes, 2019
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Thomas?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Thomas and other neurologists in Tennessee.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. T Darrell Thomas' patients have a median age of 67
Across all payers, Dmand AI patient panel data puts Dr. Thomas' median patient age at 67, with 60% women.
Dr. Thomas' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women60%
- Men39%
Source: Dmand AI Patient Panel Data
Dr. T Darrell Thomas wrote 33 Medicare Part D claims in 2021
In 2021, Dr. Thomas wrote 33 Medicare Part D claims. They cover 3 drugs, with $41,907 in total drug cost. In 2020, CMS named 734 claims across 27 drugs.
Dr. Thomas' most prescribed drugs by claims, 2021
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 7342021: 3396%
Drugs named by CMS: 3 in 2021, 27 in 2020.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. T Darrell Thomas received $19,051 in industry payments from 2016 to 2024
CMS Open Payments shows 645 general payments to Dr. Thomas from 38 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 53% of the total. Sanofi and Genzyme US Companies paid the most, $6,669.
General payments to Dr. Thomas by program year, 2016 to 2024
General payments to Dr. Thomas by kind, 2016 to 2024
- Food and beverage$10,05153%
- Consulting fees$4,74025%
- Honoraria$2,07011%
- Travel and lodging$1,91610%
- Other$2551%
Companies that paid Dr. Thomas the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. T Darrell Thomas's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. T Darrell Thomas
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. T Darrell Thomas' NPI number?
Dr. T Darrell Thomas' NPI number is 1477527901. It was assigned on February 13, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. T Darrell Thomas?
Dr. T Darrell Thomas is a neurologist in Knoxville, Tennessee. The primary specialty in the NPI Registry is Neurology Physician (taxonomy code 2084N0400X).
Where does Dr. T Darrell Thomas practice?
Dr. Thomas practices at 501 20th St Ste 503 Suite 503, Knoxville, TN 37916. Dr. Thomas' primary practice is Covenant Medical Group - Knoxville (20th St) in Knoxville, Tennessee. Dmand AI also links Dr. Thomas to 3 group practices and clinics and 3 medical groups.
What is Dr. T Darrell Thomas' office phone number?
The practice phone on file for Dr. Thomas is (865) 331-4321.
What is Dr. T Darrell Thomas' medical license number?
Dr. Thomas holds Tennessee license TN020467.
What medical group is Dr. T Darrell Thomas part of?
Dr. Thomas is linked to Covenant Medical Group. Dmand AI links Dr. Thomas to 3 more medical groups.
Does Dr. T Darrell Thomas accept Medicare?
Yes. CMS data shows Dr. Thomas billed Medicare for 1,050 services in 2019.
What services does Dr. T Darrell Thomas bill to Medicare?
In 2019, Dr. Thomas' most billed Medicare services were office visit, established patient (99213), infusion or chemotherapy administration (96366) and nerve and brain test (95886).
What drugs does Dr. T Darrell Thomas prescribe most?
In 2021 Medicare Part D data, Dr. Thomas' most prescribed drugs by claims were Duloxetine HCl, Gammagard Liquid and Pyridostigmine Bromide.
Has Dr. T Darrell Thomas received payments from drug or device companies?
CMS Open Payments shows $19,051 in general payments to Dr. Thomas from 38 companies from 2016 to 2024. The largest total came from Sanofi and Genzyme US Companies.
How long has Dr. T Darrell Thomas been practicing?
Dr. Thomas' NPI was assigned in 2006.
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