Regina Castillo
Registered Nurse · Thousand Oaks, CA
Regina Castillo is a registered nurse with a practice address in Thousand Oaks, California, and NPI 1043038664, issued on Oct 2, 2024. Check the license (California 776371, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Regina Castillo
- Primary taxonomy
- Registered Nurse 163W00000X
- License number
- 776371 CA
Self-reported in NPPES; status is on the state search - Practice location
- 125 W Thousand Oaks Blvd Ste 500, Thousand Oaks, CA 91360
- Phone
- (805) 777-3500
- Enumerated
- Oct 2, 2024
- Record last updated
- Oct 2, 2024
- Entity
- Type 1 · individual
Also registered at 125 W Thousand Oaks Blvd Ste 500
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Susan BroccoliAddiction (Substance Use Disorder) Counselor1548060197
- Hunter BurdonCommunity Health Worker1730865825
- Lauren Cook, R.N.Registered Nurse1306262399
Verify Regina Castillo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 776371Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Registered Nurse providers in California
There are 13,506 registered nurse records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 13,506 in California → Every provider in Thousand Oaks →
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Common questions
What is Regina Castillo's NPI number?
Regina Castillo's National Provider Identifier (NPI) is 1043038664, issued on Oct 2, 2024. An NPI identifies a provider in billing; it is not a license.
Where is Regina Castillo located?
The NPPES record lists a practice address at 125 W Thousand Oaks Blvd Ste 500, Thousand Oaks, CA, 91360. Phone: (805) 777-3500. Providers update this record themselves, so call before visiting.
How can I verify Regina Castillo's license?
NPPES lists California license number 776371, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.