AARON M WILLIAMS MD
NPI 1881007193
Thoracic Surgery (Cardiothoracic Vascular Surgery) in Nashville, TN
About Aaron M Williams Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
AARON M WILLIAMS MD (NPI 1881007193) is an individual thoracic surgery (cardiothoracic vascular surgery) provider in Nashville, Tennessee, licensed in Tennessee (70423) and active in the NPI registry since June 2014. He is enrolled in Medicare PECOS, is affiliated with Williamson Medical Center, and maintains a secondary practice location in Durham.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Aaron M Williams Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Aaron Williams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Nashville, TN 37232
- Reassigned Medicare billing, Tennessee enrollment
- 4,711 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Williamson Medical Center
Acute Care Hospitals · Franklin, TNVanderbilt University Medical Center
Acute Care Hospitals · Nashville, TNPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 37232 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NASHVILLE, TN 37232
NASHVILLE, TN 37232
NASHVILLE, TN 37232
NASHVILLE, TN 37232
NASHVILLE, TN 37232
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Aaron Williams's NPI number?
The NPI number for Aaron Williams is 1881007193. It was assigned to this individual provider in the NPPES registry on June 4, 2014.
Where is Aaron Williams located?
Aaron Williams practices at 3601 The Vanderbilt Clinic, Nashville, TN 37232. The listed phone number is (615) 322-5000.
What is Aaron Williams's specialty?
The primary specialty registered for this NPI is Thoracic Surgery (Cardiothoracic Vascular Surgery) with taxonomy code 208G00000X.
Is Aaron Williams enrolled in Medicare?
Yes. Aaron Williams is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Aaron Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Aaron Williams reassigns Medicare benefits to Vanderbilt University Medical Center (Nashville, TN). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Aaron Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Aaron Williams accept?
Health plans from Alliant Health Plans, Inc., BlueCross BlueShield of Tennessee, Cigna Healthcare and Oscar Insurance Company list Aaron Williams as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Aaron Williams affiliated with any hospitals?
According to CMS data, Aaron Williams is affiliated with Williamson Medical Center and Vanderbilt University Medical Center.
When was this NPI record last updated?
The NPPES record for Aaron Williams was last updated on July 18, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Aaron M Williams, MD · NPI 1881007193
Thoracic Surgery (Cardiothoracic Vascular Surgery) physician in Nashville, Tennessee. Individual provider, active in the CMS NPPES registry since June 4, 2014.
## Identity
- **NPI:** 1881007193 (Entity type: Individual)
- **Enumerated:** June 4, 2014
- **Primary specialty:** Thoracic Surgery (Cardiothoracic Vascular Surgery) · taxonomy 208G00000X
- **State license:** 70423 (Tennessee)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 3601 THE VANDERBILT CLINIC, Nashville, TN 37232-5000
- **Phone:** (615) 322-5000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Vanderbilt University Medical Center (NPI 1104202761, Nashville, TN), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Kentucky College Of Medicine, class of 2014
## Record status
- **NPPES last updated:** July 18, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1881007193) · Data from the CMS NPPES public registry.