William Warren
NPI 1427946367 · Student in an Organized Health Care Education/Training Program · Los Angeles, CA
William Warren is a Student in an Organized Health Care Education/Training Program provider in Los Angeles, CA (NPI 1427946367).
Provider details
- NPI number
- 1427946367
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Student, Health Care
- Behavior Technician106S00000X
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
Under 1 yr in 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
Mailing address
Registry dates
- Enumerated
- 2025-06-27
- Last updated
- 2026-03-26
- Certified
- 2026-03-26
Frequently asked questions
- What is William Warren's NPI number?
- William Warren's National Provider Identifier (NPI) is 1427946367, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Warren's specialty?
- William Warren is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is William Warren located?
- William Warren's practice location on file with NPPES is 4221 Wilshire Blvd Ste 300a, Los Angeles, CA 90010-3537.
- What is William Warren's phone number?
- The practice phone number listed in the NPPES registry for William Warren is (888) 428-3223.
- Is William Warren's NPI active?
- Yes — William Warren's NPI (1427946367) is active in the NPPES registry as of the last update on 2026-03-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.