HEATHER MASSENGILL APN
NPI 1043683329
Nurse Practitioner - Acute Care in Knoxville, TN
About Heather Massengill Apn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
HEATHER MASSENGILL APN (NPI 1043683329) is an individual acute care provider in Knoxville, Tennessee, licensed in Tennessee (20717) and active in the NPI registry since November 2015. She is enrolled in Medicare PECOS, is affiliated with Claiborne Medical Center, and is a graduate of Vanderbilt University School Of Medicine (2015).
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
Heather Massengill Apn 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
4Medicare enrollment records show Heather Massengill reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Knoxville, TN 37920
- Reassigned Medicare billing, Tennessee enrollment
- 832 clinicians in this Medicare group
Knoxville, TN 37914
- Reassigned Medicare billing, Tennessee enrollment
- 5 clinicians in this Medicare group
Dallas, TX 75201
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Access Telecare California PC
- 194 clinicians in this Medicare group
Dallas, TX 75201
- Reassigned Medicare billing, Arizona, Kentucky, Louisiana, Minnesota, New Mexico, South Dakota, Tennessee, Texas, Virginia and West Virginia enrollments
- 161 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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Claiborne Medical Center
Acute Care Hospitals · Tazewell, TNPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 37920 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.
KNOXVILLE, TN 37920
KNOXVILLE, TN 37920
KNOXVILLE, TN 37920
KNOXVILLE, TN 37920
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 Heather Massengill's NPI number?
The NPI number for Heather Massengill is 1043683329. It was assigned to this individual provider in the NPPES registry on November 9, 2015.
Where is Heather Massengill located?
Heather Massengill practices at 1924 Alcoa Hwy Box 52, Knoxville, TN 37920. The listed phone number is (865) 227-8296.
What is Heather Massengill's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Acute Care, with taxonomy code 363LA2100X.
Is Heather Massengill enrolled in Medicare?
Yes. Heather Massengill 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 Heather Massengill's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Heather Massengill reassigns Medicare benefits to 4 organizations: University Health System, Inc (Knoxville, TN), Neuro Heart LLC (Knoxville, TN), Access Telecare California, P.C. (Dallas, TX) and Access Telecare, PLLC (Dallas, TX). 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 Heather Massengill's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Heather Massengill accept?
Health plans from BlueCross BlueShield of Tennessee and Cigna Healthcare list Heather Massengill 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 Heather Massengill affiliated with any hospitals?
According to CMS data, Heather Massengill is affiliated with Claiborne Medical Center.
When was this NPI record last updated?
The NPPES record for Heather Massengill was last updated on February 22, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Heather Massengill, APN · NPI 1043683329
Acute Care physician in Knoxville, Tennessee. Individual provider, active in the CMS NPPES registry since November 9, 2015.
## Identity
- **NPI:** 1043683329 (Entity type: Individual)
- **Enumerated:** November 9, 2015
- **Primary specialty:** Nurse Practitioner - Acute Care · taxonomy 363LA2100X
- **State license:** 20717 (Tennessee)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1924 ALCOA HWY, BOX 52, Knoxville, TN 37920-1511
- **Phone:** (865) 227-8296
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): University Health System, Inc (NPI 1013098623, Knoxville, TN); Neuro Heart LLC (NPI 1861206138, Knoxville, TN); Access Telecare California, P.C. (NPI 1861959959, Dallas, TX); Access Telecare, PLLC (NPI 1013303080, Dallas, TX) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Vanderbilt University School Of Medicine, class of 2015
## Record status
- **NPPES last updated:** February 22, 2017
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Source: [NPI Profile](https://npiprofile.com/npi/1043683329) · Data from the CMS NPPES public registry.