Leonardo Castillo, SLPA
NPI 1255609673 · Speech-Language Assistant · Whittier, CA
Leonardo Castillo, SLPA is a Speech-Language Assistant provider in Whittier, CA (NPI 1255609673).
Provider details
- NPI number
- 1255609673
- Entity type
- Individual
- Primary specialty
- Speech-Language AssistantSpeech, Language and Hearing Service Providers
- Credential
- SLPA
- Sex
- Male
- Sole proprietor
- Yes
- License
- 1842 (CA)
Specialties & taxonomies
Speech, Language and Hearing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 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
- 2011-12-13
- Last updated
- 2011-12-13
Frequently asked questions
- What is Leonardo Castillo's NPI number?
- Leonardo Castillo's National Provider Identifier (NPI) is 1255609673, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leonardo Castillo's specialty?
- Leonardo Castillo is listed in the NPPES registry with a primary specialty of Speech-Language Assistant (Speech, Language and Hearing Service Providers).
- Where is Leonardo Castillo located?
- Leonardo Castillo's practice location on file with NPPES is 12411 Slauson Ave, Whittier, CA 90606-2835.
- What is Leonardo Castillo's phone number?
- The practice phone number listed in the NPPES registry for Leonardo Castillo is (562) 693-5466.
- Is Leonardo Castillo's NPI active?
- Yes — Leonardo Castillo's NPI (1255609673) is active in the NPPES registry as of the last update on 2011-12-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.