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DR. NATHAN AMBROSIO ED.D. LCSW
NPI 1356132948
Social Worker - Clinical in Ontario, CA

Active since May 14, 2025
1101 S MILLIKEN AVE STE E, ONTARIO, CA 91761(949) 232-5402 Get Directions Write a Review

NPPES record last updated: May 14, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Nathan Ambrosio Ed.d. Lcsw NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. NATHAN AMBROSIO ED.D. LCSW (NPI 1356132948) is an individual clinical provider in Ontario, California, licensed in California (130095) and active in the NPI registry since May 2025.

NPPES Registry Identity

NPI1356132948
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameDR. NATHAN AMBROSIOCredential: ED.D. LCSW
Location Address1101 S MILLIKEN AVE STE EOntario, CA 91761-8112
Mailing Address3693 S Dulisse AveOntario, CA 91761-9103 · (949) 232-5402
Phone(949) 232-5402
Sole ProprietorYes
Enumeration DateMay 14, 2025
NPPES CertifiedMay 14, 2025
✔ NPI 1356132948 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in CA · 130095
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
1101 S MILLIKEN AVE STE E, Ontario, CA 91761
Open in Google Maps ↗

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

OWEN RILEY RENERT
Marriage & Family Therapist
1101 S MILLIKEN AVE STE E, #1088
ONTARIO, CA 91761
San Bernardino County (909) 480-1646
MORA HANNA DPT
Physical Therapist (Pediatrics)
1101 S MILLIKEN AVE STE E
ONTARIO, CA 91761
San Bernardino County (909) 815-4328

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Nathan Ambrosio's NPI number?

The NPI number for Nathan Ambrosio is 1356132948. It was assigned to this individual provider in the NPPES registry on May 14, 2025.

Where is Nathan Ambrosio located?

Nathan Ambrosio practices at 1101 S Milliken Ave Ste E, Ontario, CA 91761. The listed phone number is (949) 232-5402.

What is Nathan Ambrosio's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

When was this NPI record last updated?

The NPPES record for Nathan Ambrosio was last updated on May 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.