DR. HAROLD R ROYSTON II D.C.
NPI 1578736310
Chiropractor in Allen, TX
About Dr. Harold R Royston Ii D.c. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. HAROLD R ROYSTON II D.C. (NPI 1578736310) is an individual chiropractor in Allen, Texas, licensed in Texas (9821) and active in the NPI registry since April 2008. He is a graduate of Other (2004).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Harold R Royston Ii D.c. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Harold Royston reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Plano, TX 75023
- Reassigned Medicare billing, Texas enrollment
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Other Providers at the Same Location NPPES
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 Harold Royston's NPI number?
The NPI number for Harold Royston is 1578736310. It was assigned to this individual provider in the NPPES registry on April 11, 2008.
Where is Harold Royston located?
Harold Royston practices at 300 S Watters Rd #814, Allen, TX 75013. The listed phone number is (682) 552-8346.
What is Harold Royston's specialty?
The primary specialty registered for this NPI is Chiropractor with taxonomy code 111N00000X.
Is Harold Royston enrolled in Medicare?
Yes. Harold Royston is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Harold Royston's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Harold Royston reassigns Medicare benefits to Chase Oaks Chiropractic LLC (Plano, 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 Harold Royston'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 Harold Royston was last updated on July 20, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Dr. Harold R Royston II, D.C. · NPI 1578736310
Chiropractor provider in Allen, Texas. Individual provider, active in the CMS NPPES registry since April 11, 2008.
## Identity
- **NPI:** 1578736310 (Entity type: Individual)
- **Enumerated:** April 11, 2008
- **Primary specialty:** Chiropractor · taxonomy 111N00000X
- **State license:** 9821 (Texas)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 300 S WATTERS RD, #814, Allen, TX 75013-6515
- **Phone:** (682) 552-8346
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Bills Medicare through:** Chase Oaks Chiropractic LLC (NPI 1932479425, Plano, TX), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2004
## Record status
- **NPPES last updated:** July 20, 2017
---
Source: [NPI Profile](https://npiprofile.com/npi/1578736310) · Data from the CMS NPPES public registry.