Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ernesto Guerrero II

Social Worker in Murrieta, CA · enumerated 2014.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1861807851

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Ernesto Guerrero II

Sex Male

Practice address 30755 Auld Rd, Murrieta, CA, 92563

Phone (951) 600-6750

Enumeration date Jun 27, 2014

Last updated in NPPES Jun 27, 2014

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License D8040680 (CA) Primary

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Ernesto Guerrero?

Ernesto Guerrero is registered in NPPES with the primary taxonomy of Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Theron Wells Psychiatry Physician · Murrieta, CA NPI 1801807086 Catherine Ramos Social Worker · Murrieta, CA NPI 1689087553 Sonji Brooks Case Manager/Care Coordinator · Murrieta, CA NPI 1437690815 Khristine Anthony Marriage & Family Therapist · Murrieta, CA NPI 1396391330 Mary Haroun Clinical Social Worker · Murrieta, CA NPI 1750906145 Shannon Matteson Mental Health Counselor · Murrieta, CA NPI 1508636218 Hoai-Truc Vu General Practice Registered Nurse · Murrieta, CA NPI 1982597589

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-06-27.