Harold Royston, D.C.
NPI 1578736310 · Chiropractor · Allen, TX
Enrolled with Medicare as Practitioner - Chiropractic · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Harold Royston, D.C. is a Chiropractor provider in Allen, TX (NPI 1578736310).
Provider details
- NPI number
- 1578736310
- Entity type
- Individual
- Primary specialty
- ChiropractorChiropractic Providers
- Credential
- D.C.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 9821 (TX)
Specialties & taxonomies
Chiropractic Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-04-11
- Last updated
- 2017-07-20
Frequently asked questions
- What is Harold Royston's NPI number?
- Harold Royston's National Provider Identifier (NPI) is 1578736310, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Harold Royston's specialty?
- Harold Royston is listed in the NPPES registry with a primary specialty of Chiropractor (Chiropractic Providers).
- Where is Harold Royston located?
- Harold Royston's practice location on file with NPPES is 300 S Watters Rd, Allen, TX 75013-6515.
- What is Harold Royston's phone number?
- The practice phone number listed in the NPPES registry for Harold Royston is (682) 552-8346.
- Does Harold Royston accept Medicare?
- Harold Royston is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Harold Royston's NPI active?
- Yes — Harold Royston's NPI (1578736310) is active in the NPPES registry as of the last update on 2017-07-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.