KATHLEEN MATHIEU MD
NPI 1275263840
Internal Medicine - Geriatric Medicine in Nashville, TN
About Kathleen Mathieu Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KATHLEEN MATHIEU MD (NPI 1275263840) is an individual geriatric medicine provider in Nashville, Tennessee, licensed in Tennessee (77014) and active in the NPI registry since June 2022. She is enrolled in Medicare PECOS, is affiliated with Vanderbilt University Medical Center, and maintains a secondary practice location in Nashville.
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
Kathleen Mathieu 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 Kathleen Mathieu 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Vanderbilt 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
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 Kathleen Mathieu's NPI number?
The NPI number for Kathleen Mathieu is 1275263840. It was assigned to this individual provider in the NPPES registry on June 15, 2022.
Where is Kathleen Mathieu located?
Kathleen Mathieu practices at 1301 Medical Center Dr, Nashville, TN 37232. The listed phone number is (615) 322-5000.
What is Kathleen Mathieu's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Geriatric Medicine, with taxonomy code 207RG0300X.
Is Kathleen Mathieu enrolled in Medicare?
Yes. Kathleen Mathieu 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 Kathleen Mathieu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Kathleen Mathieu 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 Kathleen Mathieu's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Kathleen Mathieu accept?
Health plans from Alliant Health Plans, Inc., BlueCross BlueShield of Tennessee, Cigna Healthcare and Oscar Insurance Company list Kathleen Mathieu 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 Kathleen Mathieu affiliated with any hospitals?
According to CMS data, Kathleen Mathieu is affiliated with Vanderbilt University Medical Center.
When was this NPI record last updated?
The NPPES record for Kathleen Mathieu was last updated on June 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months 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.
# Kathleen Mathieu, MD · NPI 1275263840
Geriatric Medicine physician in Nashville, Tennessee. Individual provider, active in the CMS NPPES registry since June 15, 2022.
## Identity
- **NPI:** 1275263840 (Entity type: Individual)
- **Enumerated:** June 15, 2022
- **Primary specialty:** Internal Medicine - Geriatric Medicine · taxonomy 207RG0300X
- **State license:** 77014 (Tennessee)
- **Sole proprietor:** No
## Practice location
- **Address:** 1301 MEDICAL CENTER DR, Nashville, TN 37232-0028
- **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:** Other, class of 2022
## Record status
- **NPPES last updated:** June 11, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1275263840) · Data from the CMS NPPES public registry.