What is Charles Royston's NPI number?

Charles Royston's National Provider Identifier (NPI) is 1528583960, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Charles Royston's specialty?

Charles Royston is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).

Where is Charles Royston located?

Charles Royston's practice location on file with NPPES is 4199 Campus Dr Ste 300, Irvine, CA 92612-2749.

What is Charles Royston's phone number?

The practice phone number listed in the NPPES registry for Charles Royston is (949) 502-4721.

Is Charles Royston's NPI active?

Yes — Charles Royston's NPI (1528583960) is active in the NPPES registry as of the last update on 2017-08-07.

IndividualActive

Charles Royston, MS

NPI 1528583960 · Marriage & Family Therapist · Irvine, CA

Charles Royston, MS is a Marriage & Family Therapist provider in Irvine, CA (NPI 1528583960).

Provider details

NPI number: 1528583960
Entity type: Individual
Primary specialty: Marriage & Family TherapistBehavioral Health & Social Service Providers
Credential: MS
Sex: Male
Sole proprietor: No

Specialties & taxonomies

Marriage & Family TherapistPrimary106H00000X
Behavioral Health & Social Service Providers

Profile Score

Established profile(63/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
8 yrs in NPPES registry
Profile completeness38% of score
83% 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

4199 Campus Dr Ste 300

Irvine, CA 92612-2749

Phone: (949) 502-4721

Street-level locationGet directions

More CA providers

Mailing address

16691 Bartlett Ln Apt 3

Huntington Beach, CA 92647-8550

Enumerated: 2017-08-07
Last updated: 2017-08-07

Frequently asked questions

What is Charles Royston's NPI number?: Charles Royston's National Provider Identifier (NPI) is 1528583960, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Charles Royston's specialty?: Charles Royston is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
Where is Charles Royston located?: Charles Royston's practice location on file with NPPES is 4199 Campus Dr Ste 300, Irvine, CA 92612-2749.
What is Charles Royston's phone number?: The practice phone number listed in the NPPES registry for Charles Royston is (949) 502-4721.
Is Charles Royston's NPI active?: Yes — Charles Royston's NPI (1528583960) is active in the NPPES registry as of the last update on 2017-08-07.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.