Margaret O'Neill Brown, M.D.
Diagnostic Radiology Physician · Knoxville, TN
Margaret O'Neill Brown, M.D. is a diagnostic radiology physician with a practice address in Knoxville, Tennessee, and NPI 1366495681, issued on May 18, 2006. Check the license (Tennessee 50897, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Margaret O'Neill Brown
- Credential
- M.D.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License numbers
- 50897 TN
ME149713 FL
37669 KY
Self-reported in NPPES; status is on the state search - Practice location
- 2001 Laurel Ave # N304, Knoxville, TN 37916
- Phone
- (865) 766-6870
- Enumerated
- May 18, 2006
- Record last updated
- Aug 22, 2024
- Fax
- (865) 584-4426
- Medicaid ID
- 6409241400 KY
- Medicare enrollment
- Enrolled (PECOS I20210825001724); accepts Medicare assignment
- Medical or professional school
- University Of Cincinnati College Of Medicine, 1997
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 968 in Tennessee → Look up another NPI →
Also registered at 2001 Laurel Ave # N304
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jacob Bermudez, MDDiagnostic Radiology Physician1679134761
- James Brumit, MDDiagnostic Radiology Physician1306826052
- Paul Campbell, MDDiagnostic Radiology Physician1306985171
- Andrew Conrad, M.D.Diagnostic Radiology Physician1295978658
Verify Margaret O'Neill Brown in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license 50897Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 99 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $36.29
2 payments; by number, the most common kind was food and beverage; the largest payer was Lundbeck LLC. The 8,048 providers of this specialty with any payment received $2,488.38 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 3 group practices
- Elite Imaging LLCBoca Raton, FL
- University Diagnostic Institute Winter Park PLLCLake Mary, FL
- Vista Radiology, PCKnoxville, TN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Margaret O'Neill Brown among 968 diagnostic radiology physician records in Tennessee
Margaret O'Neill Brown, M.D. is one of 968 diagnostic radiology physician records with a practice address in Tennessee. 73% 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 19% of them.
- NPI issued2006 · 19% of these records are older, 45% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated1997 · median 2004 among the 657 with a school on file
- Record last updated2024 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
146 diagnostic radiology physician records list a practice address in Knoxville
They are 146 of the 14,339 NPPES records with a practice address in Knoxville, and 968 diagnostic radiology physician records in Tennessee.
All 968 in Tennessee → Every provider in Knoxville → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Steven Addonizio, MDKnoxville, TN 379161184604811
- Michael Adler, M.D.Knoxville, TN 379161386645828
- James Brumit, MDKnoxville, TN 379161306826052
- Hugh Delozier, MDKnoxville, TN 379161548240294
- Daniel Fox, MDKnoxville, TN 379161962405183
- Garth Graham, MDKnoxville, TN 379161790765378
- William Holmes, MDKnoxville, TN 379161518937770
- Steven Knight, M.D.Knoxville, TN 379161861479644
Common questions
What is Margaret O'Neill Brown, M.D.'s NPI number?
Margaret O'Neill Brown, M.D.'s National Provider Identifier (NPI) is 1366495681, issued on May 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Margaret O'Neill Brown, M.D. located?
The NPPES record lists a practice address at 2001 Laurel Ave # N304, Knoxville, TN, 37916. Phone: (865) 766-6870. Providers update this record themselves, so call before visiting.
How can I verify Margaret O'Neill Brown, M.D.'s license?
NPPES lists Tennessee license number 50897, 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.
What is Margaret O'Neill Brown, M.D.'s MIPS final score?
The 2023 MIPS final score is 99 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.
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.