MS. AMBER T. LOPEZ APRN, FNP-BC
NPI 1154674430
Nurse Practitioner - Primary Care in Knoxville, TN
About Ms. Amber T. Lopez Aprn, Fnp-bc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. AMBER T. LOPEZ APRN, FNP-BC (NPI 1154674430) is an individual primary care provider in Knoxville, Tennessee, licensed in Tennessee (17107) and active in the NPI registry since October 2012. She is enrolled in Medicare PECOS, is affiliated with University Health System, Inc, and maintains a secondary practice location in Cleveland.
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
Ms. Amber T. Lopez Aprn, Fnp-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
4Medicare enrollment records show Amber Lopez reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Knoxville, TN 37917
- Reassigned Medicare billing, Tennessee enrollment
- 832 clinicians in this Medicare group
Morristown, TN 37814
- Reassigned Medicare billing, Tennessee enrollment
- 4 clinicians in this Medicare group
Dallas, TX 75244
- Reassigned Medicare billing, Colorado, Oregon and Tennessee enrollments
- 290 clinicians in this Medicare group
Welches, OR 97067
- Reassigned Medicare billing, Oregon enrollment
- 206 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.
University Health System, Inc
Acute Care Hospitals · Knoxville, TNPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 37917 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 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Amber Lopez's NPI number?
The NPI number for Amber Lopez is 1154674430. It was assigned to this individual provider in the NPPES registry on October 24, 2012.
Where is Amber Lopez located?
Amber Lopez practices at 4435 Valley View Dr Ste 102, Knoxville, TN 37917. The listed phone number is (865) 544-6244.
What is Amber Lopez's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Primary Care, with taxonomy code 363LP2300X.
Is Amber Lopez enrolled in Medicare?
Yes. Amber Lopez 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 Amber Lopez's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Amber Lopez reassigns Medicare benefits to 4 organizations: University Health System, Inc (Knoxville, TN), Morristown-Hamblen Homecare And Hospice, LLC (Morristown, TN), Signify Health Medical Associates, PLLC (Dallas, TX) and Northwest Medical Foundation Of Tillamook (Welches, OR). 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 Amber Lopez's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Amber Lopez accept?
Health plans from Cigna Healthcare, Moda Health Plan, Inc., Oscar Insurance Company and UnitedHealthcare list Amber Lopez 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 Amber Lopez affiliated with any hospitals?
According to CMS data, Amber Lopez is affiliated with University Health System, Inc.
When was this NPI record last updated?
The NPPES record for Amber Lopez was last updated on July 15, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Ms. Amber T. Lopez, APRN, FNP-BC · NPI 1154674430
Primary Care physician in Knoxville, Tennessee. Individual provider, active in the CMS NPPES registry since October 24, 2012.
## Identity
- **NPI:** 1154674430 (Entity type: Individual)
- **Enumerated:** October 24, 2012
- **Primary specialty:** Nurse Practitioner - Primary Care · taxonomy 363LP2300X
- **State license:** 17107 (Tennessee)
- **Sole proprietor:** No
## Practice location
- **Address:** 4435 VALLEY VIEW DR STE 102, Knoxville, TN 37917
- **Phone:** (865) 544-6244
## 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 1063510907, Knoxville, TN); Morristown-Hamblen Homecare And Hospice, LLC (NPI 1417117300, Morristown, TN); Signify Health Medical Associates, PLLC (NPI 1750845863, Dallas, TX); Northwest Medical Foundation Of Tillamook (NPI 1861944894, Welches, OR) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2012
## Record status
- **NPPES last updated:** July 15, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1154674430) · Data from the CMS NPPES public registry.