William Young, PHD
NPI 1134220247 · Clinical Psychologist · Orange, CA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Young, PHD is a Clinical Psychologist provider in Orange, CA (NPI 1134220247).
Provider details
- NPI number
- 1134220247
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Male
- Sole proprietor
- Yes
- License
- PSY9978 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
- 2006-09-25
- Last updated
- 2021-01-28
- Certified
- 2021-01-28
Frequently asked questions
- What is William Young's NPI number?
- William Young's National Provider Identifier (NPI) is 1134220247, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Young's specialty?
- William Young is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is William Young located?
- William Young's practice location on file with NPPES is 594 N Glassell St, Orange, CA 92867-6748.
- What is William Young's phone number?
- The practice phone number listed in the NPPES registry for William Young is (714) 633-7247.
- Does William Young accept Medicare?
- William Young is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Young's NPI active?
- Yes — William Young's NPI (1134220247) is active in the NPPES registry as of the last update on 2021-01-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.