NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Sergio Alberto Marron, LCSW

Clinical Social Worker in Atwater, CA · enumerated 2013.

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

National Provider Identifier

1184058471

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Mr. Sergio Alberto Marron
Credential LCSW
Sex Male
Practice address 3605 Hospital Rd, Atwater, CA, 95301
Phone (209) 381-2000
Enumeration date Aug 22, 2013
Last updated in NPPES Jul 24, 2019

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 87188 (CA) Primary
LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

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

Where does Sergio Marron practice?
The practice location on file with NPPES is in Atwater, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Sergio Marron?
The National Provider Identifier (NPI) for Sergio Marron is 1184058471, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-07-24.