Michael Castro, RNFA
NPI 1316145261 · Registered Nurse First Assistant · Los Alamitos, CA
Michael Castro, RNFA is a Registered Nurse First Assistant provider in Los Alamitos, CA (NPI 1316145261).
Provider details
- NPI number
- 1316145261
- Entity type
- Individual
- Primary specialty
- Registered Nurse First AssistantNursing Service Providers
- Credential
- RNFA
- Sex
- Male
- Sole proprietor
- No
- License
- 545956 (CA)
Specialties & taxonomies
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
- 2007-07-03
- Last updated
- 2007-07-08
Frequently asked questions
- What is Michael Castro's NPI number?
- Michael Castro's National Provider Identifier (NPI) is 1316145261, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Castro's specialty?
- Michael Castro is listed in the NPPES registry with a primary specialty of Registered Nurse First Assistant (Nursing Service Providers).
- Where is Michael Castro located?
- Michael Castro's practice location on file with NPPES is 10921 Cherry St Ste 100, Los Alamitos, CA 90720-2473.
- What is Michael Castro's phone number?
- The practice phone number listed in the NPPES registry for Michael Castro is (562) 795-5600.
- Is Michael Castro's NPI active?
- Yes — Michael Castro's NPI (1316145261) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.