REGAN NICHOLE CASTELLANOS DNP, APRN, CPNP-AC
NPI 1427980374
Nurse Practitioner - Pediatrics, Critical Care in Houston, TX
About Regan Nichole Castellanos Dnp, Aprn, Cpnp-ac NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
REGAN NICHOLE CASTELLANOS DNP, APRN, CPNP-AC (NPI 1427980374) is an individual pediatrics, critical care provider in Houston, Texas, licensed in Texas (1241673) and active in the NPI registry since June 2026. She is enrolled in Medicare PECOS and is a graduate of Other (2025).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Regan Nichole Castellanos Dnp, Aprn, Cpnp-ac is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Regan Castellanos reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Houston, TX 77030
- Reassigned Medicare billing, Texas enrollment
- 3,111 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 77030 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.
HOUSTON, TX 77030
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 Regan Castellanos's NPI number?
The NPI number for Regan Castellanos is 1427980374. It was assigned to this individual provider in the NPPES registry on June 2, 2026. The provider is also known as Regan Nichole Williams Dnp, Aprn, Cpnp-Ac.
Where is Regan Castellanos located?
Regan Castellanos practices at 6411 Fannin St, Houston, TX 77030. The listed phone number is (713) 704-5437.
What is Regan Castellanos's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Pediatrics, Critical Care, with taxonomy code 363LP0222X.
Is Regan Castellanos enrolled in Medicare?
Yes. Regan Castellanos is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Regan Castellanos's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Regan Castellanos reassigns Medicare benefits to Ut Physicians (Houston, TX). 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 Regan Castellanos's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Regan Castellanos was last updated on July 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Regan Nichole Castellanos, DNP, APRN, CPNP-AC · NPI 1427980374
Pediatrics, Critical Care physician in Houston, Texas. Individual provider, active in the CMS NPPES registry since June 2, 2026.
## Identity
- **NPI:** 1427980374 (Entity type: Individual)
- **Enumerated:** June 2, 2026
- **Primary specialty:** Nurse Practitioner - Pediatrics, Critical Care · taxonomy 363LP0222X
- **State license:** 1241673 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 6411 FANNIN ST, Houston, TX 77030-1501
- **Phone:** (713) 704-5437
## 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:** Ut Physicians (NPI 1033157821, Houston, TX), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2025
## Record status
- **NPPES last updated:** July 22, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1427980374) · Data from the CMS NPPES public registry.