Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Primary Care Physicians of South Bay Medical Group Inc

Family Medicine Physician in National City, CA · enumerated 2010 · authorized official Carlos Castro, President.

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

National Provider Identifier

1003124363

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Registry record

Entity type Organization (Type 2)

Legal business name Primary Care Physicians of South Bay Medical Group Inc

Practice address 2340 E 8th St, Suite A, National City, CA, 91950

Phone (619) 267-9047

Fax (619) 267-7955

Enumeration date Sep 21, 2010

Last updated in NPPES Jun 29, 2011

Taxonomy & classification

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License A42911 (CA) Primary

Authorized official

Name Carlos Castro

Title President

Phone (619) 267-9047

Other identifiers

Identifier	Type	State	Issuer
A42911	Other	CA	THE MEDICAL BOARD OF CALIFORNIA

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

Who is the authorized official for Primary Care Physicians of South Bay Medical Group Inc?

NPPES lists Carlos Castro (President) as the authorized official for this organization.

What is the NPI number for Primary Care Physicians of South Bay Medical Group Inc?

The NPI for Primary Care Physicians of South Bay Medical Group Inc is 1003124363, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-06-29.