NPPES file of Aug 9, 2026

Donald T. Ellenburg, M.D.

Allergy & Immunology Physician · Knoxville, TN

Donald T. Ellenburg, M.D. is an allergy & immunology physician with a practice address in Knoxville, Tennessee, and NPI 1548354475, issued on Oct 3, 2006. Check the license (Tennessee 3958, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1548354475
Name
Donald T. Ellenburg
Credential
M.D.
Primary taxonomy
Allergy & Immunology Physician 207K00000X
License numbers
3958 TN
31722 TN
Self-reported in NPPES; status is on the state search
Practice location
2121 Highland Ave, Knoxville, TN 37916
Phone
(865) 525-2640
Enumerated
Oct 3, 2006
Record last updated
Feb 17, 2025
Fax
(865) 525-9536
Medicaid ID
3188882 TN
Medicare enrollment
Enrolled (PECOS I20120416000782); accepts Medicare assignment
Medical or professional school
University Of Tennessee, Hsc, College Of Medicine, 1976
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest allergy & immunology physician records → All 85 in Tennessee → Look up another NPI →

Also registered at 2121 Highland Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Olivia Art, FNPFamily Nurse Practitioner1336976471
  2. Megan Brumbelow, FNPFamily Nurse Practitioner1023243714
  3. Christin Carter, FNPFamily Medicine Physician1366410847
  4. Joseph Ellenburg, D.O.Allergy & Immunology Physician1760794093
  5. Timothy FrazierPediatrics Physician1578657334
  6. Kailyn GriffeyAllergy & Immunology Physician1043164205

Verify Donald T. Ellenburg in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTennessee Board of Medical Examiners
    Search for license 3958    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Tennessee license search

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51% fewer Medicare Part D claims than the average allergy & immunology physician in 2024

365 Medicare Part D claims for 83 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 36% of claims.

  1. Donald Ellenburg365
  2. Specialty average741

Most prescribed

  1. Montelukast Sodium56 claims
  2. Fluticasone Propionate40 claims
  3. Albuterol Sulfate Hfa30 claims
  4. Ipratropium Bromide26 claims
  5. Qvar Redihaler20 claims
  6. Trelegy Ellipta20 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $819.08

37 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 2,496 providers of this specialty with any payment received $8,321.81 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Donald Ellenburg$819.08
  2. Specialty average$8,321.81

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Allergy And Asthma Affiliates, PCKnoxville, TN

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Donald T. Ellenburg among 85 allergy & immunology physician records in Tennessee

Donald T. Ellenburg, M.D. is one of 85 allergy & immunology physician records with a practice address in Tennessee. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 22% of them.

  • NPI issued2006 · 22% of these records are older, 46% newer
  • In a Medicare fileYes · 87% of these records are
  • In the CMS Doctors and Clinicians fileYes · 81% of these records are
  • Graduated1976 · median 2001 among the 68 with a school on file
  • Record last updated2025 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207K00000X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Allergy & Immunology Physician providers in Tennessee

There are 85 allergy & immunology physician records in Tennessee.

All 85 in Tennessee → Every provider in Knoxville → Allergy & Immunology Physician nationwide →

The 8 allergy & immunology physician records with the nearest ZIP codes

  1. Joseph Ellenburg, D.O.Knoxville, TN 379161760794093
  2. Kailyn GriffeyKnoxville, TN 379161043164205
  3. Jennifer Hall, FNPKnoxville, TN 379161063231777
  4. Andrew Singer, MDKnoxville, TN 379161255420188
  5. Shirley Avery, MDKnoxville, TN 379091396017018
  6. Jeremiah Bivins, MDKnoxville, TN 379091831355833
  7. Nicholas ClineKnoxville, TN 379091801356985
  8. Jane Conley, M.D.Knoxville, TN 379091407801608

Common questions

What is Donald T. Ellenburg, M.D.'s NPI number?

Donald T. Ellenburg, M.D.'s National Provider Identifier (NPI) is 1548354475, issued on Oct 3, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Donald T. Ellenburg, M.D. located?

The NPPES record lists a practice address at 2121 Highland Ave, Knoxville, TN, 37916. Phone: (865) 525-2640. Providers update this record themselves, so call before visiting.

How can I verify Donald T. Ellenburg, M.D.'s license?

NPPES lists Tennessee license number 3958, as entered by the provider. Search the Tennessee Board of Medical Examiners at https://www.tn.gov/health/licensure/me.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Donald T. Ellenburg, M.D. prescribe under Medicare Part D?

In 2024, Donald T. Ellenburg, M.D. had 365 Medicare Part D claims for 83 beneficiaries; the average among allergy & immunology physician prescribers was 741. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.