James Royster, FNP
NPI 1174936454 · Nurse Practitioner · Corona, CA
James Royster, FNP is a Nurse Practitioner provider in Corona, CA (NPI 1174936454).
Provider details
- NPI number
- 1174936454
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Male
- Sole proprietor
- Yes
- License
- 22668 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
12 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
- 2014-06-04
- Last updated
- 2018-06-06
Frequently asked questions
- What is James Royster's NPI number?
- James Royster's National Provider Identifier (NPI) is 1174936454, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Royster's specialty?
- James Royster is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is James Royster located?
- James Royster's practice location on file with NPPES is 2083 Compton Ave, Corona, CA 92881-7283.
- What is James Royster's phone number?
- The practice phone number listed in the NPPES registry for James Royster is (951) 898-8515.
- Is James Royster's NPI active?
- Yes — James Royster's NPI (1174936454) is active in the NPPES registry as of the last update on 2018-06-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.