NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Margine D. Mejia-Ruiz

Mental Health Counselor in Belmont, CA · enumerated 2019.

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

National Provider Identifier

1427511831

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Margine D. Mejia-Ruiz
Sex Female
Practice address 300 Harbor Blvd Bldg E, Belmont, CA, 94002
Phone (650) 817-9070
Fax (650) 817-9074
Enumeration date Apr 11, 2019
Last updated in NPPES Apr 11, 2019

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers 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

Where does Margine Mejia-Ruiz practice?
The practice location on file with NPPES is in Belmont, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Margine Mejia-Ruiz?
The National Provider Identifier (NPI) for Margine Mejia-Ruiz is 1427511831, 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 2019-04-11.