NPPES file of Aug 9, 2026

William Allison Barret, M.D. , M.S.

Vascular & Interventional Radiology Physician · Nashville, TN

William Allison Barret, M.D. , M.S. is a vascular & interventional radiology physician with a practice address in Nashville, Tennessee, and NPI 1891012696, issued on May 3, 2010. Check the license (Tennessee 54144, 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 2023 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1891012696
Name
William Allison Barret
Credential
M.D. , M.S.
Primary taxonomy
Vascular & Interventional Radiology Physician 2085R0204X
License numbers
54144 TN
31315 AL
64788 AZ
A153029 CA
49096 KY
and 1 more
Self-reported in NPPES; status is on the state search
Practice location
3601 The Vanderbilt Clinic, Nashville, TN 37232
Phone
(615) 322-3000
Enumerated
May 3, 2010
Record last updated
May 8, 2026
Medicaid ID
Q022578 TN
Medicare enrollment
Enrolled (PECOS I20200203000742); accepts Medicare assignment
Medical or professional school
Wake Forest University School Of Medicine, 2010
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 vascular & interventional radiology physician records → All 87 in Tennessee → Look up another NPI →

Also registered at 3601 The Vanderbilt Clinic

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

  1. Kristie AamodtPediatric Endocrinology Physician1780115931
  2. Hibo Abdi, APRNGerontology Nurse Practitioner1336761758
  3. Hodan Abdi, NPFamily Nurse Practitioner1710383922
  4. Cecilia Abello, PA-CPhysician Assistant1760336101
  5. Ahad Abid, MDInternal Medicine Physician1316500176
  6. Yara Aboshady, MDObstetrics & Gynecology Physician1558998971

Verify William Allison Barret 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 54144    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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The MIPS final score for 2023 (Medicare payment program): 97.1 of 100

The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score85.6
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

5 hospitals and group practices

  1. Vanderbilt University Medical CenterNashville, TN · Acute Care Hospitals5 of 5 stars
  2. One Hundred Oaks Imaging LLCNashville, TN
  3. Regents OF The Univ OF CARancho Cordova, CA
  4. Vanderbilt Imaging Services LLCNashville, TN
  5. Williamson Imaging LLCFranklin, TN

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

William Allison Barret among 87 vascular & interventional radiology physician records in Tennessee

William Allison Barret, M.D. , M.S. is one of 87 vascular & interventional radiology physician records with a practice address in Tennessee. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 59% of them.

  • NPI issued2010 · 59% of these records are older, 37% newer
  • In a Medicare fileYes · 90% of these records are
  • In the CMS Doctors and Clinicians fileYes · 79% of these records are
  • Graduated2010 · median 2006 among the 69 with a school on file
  • Record last updated2026 · 38% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0204X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Vascular & Interventional Radiology Physician providers in Tennessee

There are 87 vascular & interventional radiology physician records in Tennessee.

All 87 in Tennessee → Every provider in Nashville → Vascular & Interventional Radiology Physician nationwide →

The 8 vascular & interventional radiology physician records with the nearest ZIP codes

  1. Filip Banovac, M.D.Nashville, TN 372321699773721
  2. Meaghan Dendy Case, M.D.Nashville, TN 372321245762434
  3. Adonteng Kwakye, M.D.Nashville, TN 372321144516485
  4. Andrew Marsala, M.D.Nashville, TN 372321477846269
  5. Murray Mazer, MDNashville, TN 372321538189444
  6. Steven Meranze, MDNashville, TN 372321043302458
  7. Samdeep Mouli, M.D.Nashville, TN 372321932375565
  8. Ryan Muller, MDNashville, TN 372321437305000

Common questions

What is William Allison Barret, M.D. , M.S.'s NPI number?

William Allison Barret, M.D. , M.S.'s National Provider Identifier (NPI) is 1891012696, issued on May 3, 2010. An NPI identifies a provider in billing; it is not a license.

Where is William Allison Barret, M.D. , M.S. located?

The NPPES record lists a practice address at 3601 The Vanderbilt Clinic, Nashville, TN, 37232. Phone: (615) 322-3000. Providers update this record themselves, so call before visiting.

How can I verify William Allison Barret, M.D. , M.S.'s license?

NPPES lists Tennessee license number 54144, 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 William Allison Barret, M.D. , M.S.'s MIPS final score?

The 2023 MIPS final score is 97.1 of 100. 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.

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.