MR. LESLIE A. MATHEWSON APN (PMHNP)
NPI 1376588236
Nurse Practitioner - Psychiatric/Mental Health in Knoxville, TN
About Mr. Leslie A. Mathewson Apn (pmhnp) NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. LESLIE A. MATHEWSON APN (PMHNP) (NPI 1376588236) is an individual psychiatric/mental health provider in Knoxville, Tennessee, licensed in Tennessee (10492) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in Spartanburg, and is a graduate of Other (2003).
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Secondary Practice Location 1
Other Identifiers 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
Mr. Leslie A. Mathewson Apn (pmhnp) 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 Leslie Mathewson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Aiken, SC 29801
- Reassigned Medicare billing, South Carolina enrollment
- 79 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 37922 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.
KNOXVILLE, TN 37922
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 Leslie Mathewson's NPI number?
The NPI number for Leslie Mathewson is 1376588236. It was assigned to this individual provider in the NPPES registry on June 17, 2006. The provider is also known as Mr. L. Albert Mathewson Apn (pmhnp).
Where is Leslie Mathewson located?
Leslie Mathewson practices at 10434 Jackson Oaks Way, Knoxville, TN 37922. The listed phone number is (865) 281-1408.
What is Leslie Mathewson's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.
Is Leslie Mathewson enrolled in Medicare?
Yes. Leslie Mathewson 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 Leslie Mathewson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Leslie Mathewson reassigns Medicare benefits to South Carolina Dept Of Mental Health Accounting Office (Aiken, SC). 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 Leslie Mathewson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Leslie Mathewson accept?
Health plans from UnitedHealthcare list Leslie Mathewson 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.
When was this NPI record last updated?
The NPPES record for Leslie Mathewson was last updated on June 28, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Mr. Leslie A. Mathewson, APN (PMHNP) · NPI 1376588236
Psychiatric/Mental Health physician in Knoxville, Tennessee. Individual provider, active in the CMS NPPES registry since June 17, 2006.
## Identity
- **NPI:** 1376588236 (Entity type: Individual)
- **Enumerated:** June 17, 2006
- **Primary specialty:** Nurse Practitioner - Psychiatric/Mental Health · taxonomy 363LP0808X
- **State license:** 10492 (Tennessee)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 10434 JACKSON OAKS WAY, Knoxville, TN 37922-3293
- **Phone:** (865) 281-1408
## 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:** South Carolina Dept Of Mental Health Accounting Office (NPI 1316904857, Aiken, SC), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2003
## Record status
- **NPPES last updated:** June 28, 2023
- **Other identifiers:** Other 3648105 (TN)
---
Source: [NPI Profile](https://npiprofile.com/npi/1376588236) · Data from the CMS NPPES public registry.