Efren Monterroso
Social Worker · Sylmar, CA
Efren Monterroso is a social worker with a practice address in Sylmar, California, and NPI 1982002044, issued on Dec 5, 2014. Check the license with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Efren Monterroso
- Primary taxonomy
- Social Worker 104100000X
- Practice location
- 11300 Foothill Blvd Unit 78, Sylmar, CA 91342
- Phone
- (818) 899-4954
- Enumerated
- Dec 5, 2014
- Record last updated
- Dec 5, 2014 (not updated in 12 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest social worker records → All 10,332 in California → Look up another NPI →
Verify Efren Monterroso in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Efren Monterroso among 10,332 social worker records in California
Efren Monterroso is one of 10,332 social worker records with a practice address in California. 2% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2014, is newer than 32% of them.
- NPI issued2014 · 32% of these records are older, 65% newer
- In a Medicare fileNo · 2% of these records are
- In the CMS Doctors and Clinicians fileNo · 3% of these records are
- Record last updated2014 · 41% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 104100000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
17 social worker records list a practice address in Sylmar
They are 17 of the 1,454 NPPES records with a practice address in Sylmar, and 10,332 social worker records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 10,332 in California → Every provider in Sylmar → Social Worker nationwide →
The 8 social worker records with the nearest ZIP codes
- Aminadab AmaralSylmar, CA 913421578229910
- Nancy Batalas, LCSWSylmar, CA 913421922351253
- Vanessa FloresSylmar, CA 913421427797281
- Casey GlendenningSylmar, CA 913421770316556
- Yaritza Herrera-Renteria, ACSWSylmar, CA 913421871287078
- Diana LinaresSylmar, CA 913421750809703
- Shelina MirandaSylmar, CA 913421801224126
- Michelle OmisoreSylmar, CA 913421417735424
Common questions
What is Efren Monterroso's NPI number?
Efren Monterroso's National Provider Identifier (NPI) is 1982002044, issued on Dec 5, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Efren Monterroso located?
The NPPES record lists a practice address at 11300 Foothill Blvd Unit 78, Sylmar, CA, 91342. Phone: (818) 899-4954. Providers update this record themselves, so call before visiting.
How can I verify Efren Monterroso's license?
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.