THOMAS J. BYRNES IV FNP
NPI 1700509296
Nurse Practitioner - Family in Wilmington, DE
About Thomas J. Byrnes Iv Fnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
THOMAS J. BYRNES IV FNP (NPI 1700509296) is an individual family provider in Wilmington, Delaware, licensed in Delaware (LG-0012102) and active in the NPI registry since September 2022. He is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of Other (2022).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 3
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
Thomas J. Byrnes Iv Fnp 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 Thomas Byrnes reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Middletown, DE 19709
- Reassigned Medicare billing, Delaware and Maryland enrollments
- 18 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 2
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 19809 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 15
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WILMINGTON, DE 19809
WILMINGTON, DE 19809
WILMINGTON, DE 19809
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 Thomas Byrnes's NPI number?
The NPI number for Thomas Byrnes is 1700509296. It was assigned to this individual provider in the NPPES registry on September 21, 2022.
Where is Thomas Byrnes located?
Thomas Byrnes practices at 405 Silverside Rd Ste 104, Wilmington, DE 19809. The listed phone number is (844) 365-7246.
What is Thomas Byrnes's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Thomas Byrnes enrolled in Medicare?
Yes. Thomas Byrnes 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 Thomas Byrnes's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Byrnes reassigns Medicare benefits to Center For Interventional Pain Spine LLC (Middletown, DE). 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 Thomas Byrnes's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Thomas Byrnes accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Buckeye Health Plan and AmeriHealth Caritas Next list Thomas Byrnes 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 Thomas Byrnes was last updated on June 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Thomas J. Byrnes IV, FNP · NPI 1700509296
Family physician in Wilmington, Delaware. Individual provider, active in the CMS NPPES registry since September 21, 2022.
## Identity
- **NPI:** 1700509296 (Entity type: Individual)
- **Enumerated:** September 21, 2022
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** LG-0012102 (Delaware)
- **Sole proprietor:** No
## Practice location
- **Address:** 405 SILVERSIDE RD STE 104, Wilmington, DE 19809-1768
- **Phone:** (844) 365-7246 · **Fax:** (844) 516-0080
## 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:** Center For Interventional Pain Spine LLC (NPI 1144527003, Middletown, DE), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2022
## Record status
- **NPPES last updated:** June 2, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1700509296) · Data from the CMS NPPES public registry.