SAMANTHA RIVERS ALVAREZ DNP,APRN,AG-ACNP-BC
NPI 1801400858
Nurse Practitioner - Critical Care Medicine in Nashville, TN
About Samantha Rivers Alvarez Dnp,aprn,ag-acnp-bc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SAMANTHA RIVERS ALVAREZ DNP,APRN,AG-ACNP-BC (NPI 1801400858) is an individual critical care medicine provider in Nashville, Tennessee, licensed in Tennessee (28036) and active in the NPI registry since September 2020. She is enrolled in Medicare PECOS, is affiliated with Vanderbilt University Medical Center, and is a graduate of University Of Tennessee, Hsc, College Of Medicine (2020).
NPPES Registry Identity
Specialties & Licenses
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
Samantha Rivers Alvarez Dnp,aprn,ag-acnp-bc 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 Reassignments
2Medicare enrollment records show Samantha Alvarez reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Nashville, TN 37232
- Reassigned Medicare billing, Tennessee enrollment
- 4,711 clinicians in this Medicare group
Franklin, TN 37064
- Reassigned Medicare billing, Tennessee enrollment
- 298 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
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
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.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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 Samantha Alvarez's NPI number?
The NPI number for Samantha Alvarez is 1801400858. It was assigned to this individual provider in the NPPES registry on September 6, 2020.
Where is Samantha Alvarez located?
Samantha Alvarez practices at 3601 The Vanderbilt Clinic, Nashville, TN 37232. The listed phone number is (615) 322-3000.
What is Samantha Alvarez's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Critical Care Medicine, with taxonomy code 363LC0200X.
Is Samantha Alvarez enrolled in Medicare?
Yes. Samantha Alvarez 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 organizations bill Medicare for Samantha Alvarez's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Samantha Alvarez reassigns Medicare benefits to 2 organizations: Vanderbilt University Medical Center (Nashville, TN) and Vanderbilt Health And Williamson Medical Center Clinics And Services, (Franklin, TN). Each 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 Samantha Alvarez's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Samantha Alvarez accept?
Health plans from Alliant Health Plans, Inc., BlueCross BlueShield of Tennessee, Cigna Healthcare and Oscar Insurance Company list Samantha Alvarez 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 Samantha Alvarez affiliated with any hospitals?
According to CMS data, Samantha Alvarez is affiliated with Vanderbilt University Medical Center.
When was this NPI record last updated?
The NPPES record for Samantha Alvarez was last updated on July 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Samantha Rivers Alvarez, DNP,APRN,AG-ACNP-BC · NPI 1801400858
Critical Care Medicine physician in Nashville, Tennessee. Individual provider, active in the CMS NPPES registry since September 6, 2020.
## Identity
- **NPI:** 1801400858 (Entity type: Individual)
- **Enumerated:** September 6, 2020
- **Primary specialty:** Nurse Practitioner - Critical Care Medicine · taxonomy 363LC0200X
- **State license:** 28036 (Tennessee)
- **Sole proprietor:** No
## Practice location
- **Address:** 3601 THE VANDERBILT CLINIC, Nashville, TN 37232-0001
- **Phone:** (615) 322-3000
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Vanderbilt University Medical Center (NPI 1104202761, Nashville, TN); Vanderbilt Health And Williamson Medical Center Clinics And Services, (NPI 1225135551, Franklin, TN) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Tennessee, Hsc, College Of Medicine, class of 2020
## Record status
- **NPPES last updated:** July 16, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1801400858) · Data from the CMS NPPES public registry.