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

Diagnostic Radiology · Interventional Radiology (CMS) · Nashville, TN

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At a glance

3601 The Vanderbilt Clinic, Nashville, TN 37232-2637

Published activity: Skin biopsy. View counts and coverage

NPPES record updated May 8, 2026. Public records can lag behind changes at a practice.

Before you call: a quick checklist

Are you accepting new patients?
Do you accept my specific insurance plan?
Do you provide the service I need at this address?
Do I need a referral, and what is the earliest appointment?

Insurance participation and appointment availability are not established by these public records.

Medicare & insurance

Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.

How to check your coverage

Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.

Check the official Medicare directory ↗

Practice location

3601 The Vanderbilt Clinic
Nashville, TN 37232-2637

Additional reported practice locations

2009 Mallory Ln Ste 150
Franklin, TN 370672872
Phone: 6157718668

719 Thompson Ln Ste 23300
Nashville, TN 372044686
Phone: 6159363606

1800 E Florence Blvd
Casa Grande, AZ 851225303
Phone: 5203816300

1310 24Th Ave S
Nashville, TN 372122637
Phone: 6153274751 · Ext. 66032

2002 Richard Jones Rd Ste B300
Nashville, TN 372152809
Phone: 9316852022

Department Of Radiology 1161 21St Ave S
Nashville, TN 372322637
Phone: 6153225000

4525 Harding Pike Ste 102
Nashville, TN 372052145
Phone: 6154633034

REPORTED BACKGROUND

Education & affiliations

Medical / professional school: Wake Forest University School Of Medicine
Graduation year: 2010
CMS specialties: Diagnostic Radiology · Interventional Radiology

Practice groups

Reported hospital affiliations

University Of California Davis Medical Center Sacramento, CA
Vanderbilt Bedford Hospital Shelbyville, TN
Vanderbilt Tullahoma-Harton Hospital Tullahoma, TN
Vanderbilt University Medical Center Nashville, TN
Vanderbilt Wilson County Hospital Lebanon, TN

Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.

Source: CMS National Downloadable File · Published Oct 15, 2026.

Source: CMS Facility Affiliation Data · Published Oct 15, 2026.

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PUBLISHED MEDICARE ACTIVITY

Procedures in the public data

Reported activity can help you ask more informed questions about a practice’s services.

Procedure category	Published Medicare activity
Skin biopsy	1-10

CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology

Source: CMS Utilization Data · Published Oct 15, 2026.

Find providers with a similar service mix

Compare 2024 published Medicare activity in the same reported specialty, here or in another city.

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PAYMENT TRANSPARENCY

Industry-reported general payments

No matching general-payment summary in the imported release. This is not a verified zero and does not rule out other payment types or years.

Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.

Professional details: NPI, taxonomy & registry record

NPI1891012696

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Registry details

Primary taxonomy: Diagnostic Radiology · Interventional Radiology (CMS)
Taxonomy code: 2085R0204X
Enumeration date: May 3, 2010
Record updated: May 8, 2026

More registry details

Provider type: Individual · Type 1
Reported credentials: M.D. , M.S.