CATHERINE PORTER NICHOLSON PNP
NPI 1811723612
Nurse Practitioner - Pediatrics in Knoxville, TN
About Catherine Porter Nicholson Pnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CATHERINE PORTER NICHOLSON PNP (NPI 1811723612) is an individual pediatrics provider in Knoxville, Tennessee, licensed in Tennessee (36985) and active in the NPI registry since September 2024. She is enrolled in Medicare PECOS and is a graduate of University Of Tennessee, Hsc, College Of Medicine (2024).
NPPES Registry Identity
Specialties & Licenses
Other Names 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 (PECOS)
Catherine Porter Nicholson Pnp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Catherine Nicholson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Maysville, KY 41056
- Reassigned Medicare billing, Tennessee enrollment
- 1,071 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 37915 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 8
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 Catherine Nicholson's NPI number?
The NPI number for Catherine Nicholson is 1811723612. It was assigned to this individual provider in the NPPES registry on September 10, 2024. The provider is also known as Casey Nicholson.
Where is Catherine Nicholson located?
Catherine Nicholson practices at 220 Langland St, Knoxville, TN 37915. The listed phone number is (865) 594-5078.
What is Catherine Nicholson's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Pediatrics, with taxonomy code 363LP0200X.
Is Catherine Nicholson enrolled in Medicare?
Yes. Catherine Nicholson is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Catherine Nicholson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Catherine Nicholson reassigns Medicare benefits to Southeastern Emergency Physicians LLC (Maysville, KY). 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 Catherine Nicholson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Catherine Nicholson accept?
Health plans from BlueCross BlueShield of Tennessee list Catherine Nicholson 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 Catherine Nicholson was last updated on August 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Catherine Porter Nicholson, PNP · NPI 1811723612
Pediatrics physician in Knoxville, Tennessee. Individual provider, active in the CMS NPPES registry since September 10, 2024.
## Identity
- **NPI:** 1811723612 (Entity type: Individual)
- **Enumerated:** September 10, 2024
- **Primary specialty:** Nurse Practitioner - Pediatrics · taxonomy 363LP0200X
- **State license:** 36985 (Tennessee)
- **Sole proprietor:** No
## Practice location
- **Address:** 220 LANGLAND ST, Knoxville, TN 37915-1415
- **Phone:** (865) 594-5078
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Southeastern Emergency Physicians LLC (NPI 1356379382, Maysville, KY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Tennessee, Hsc, College Of Medicine, class of 2024
## Record status
- **NPPES last updated:** August 22, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1811723612) · Data from the CMS NPPES public registry.