Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Martha Estrella, MPH, CHES

Counselor in Union City, CA · enumerated 2014.

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

National Provider Identifier

1679990485

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Martha Estrella

Credential MPH, CHES

Sex Female

Practice address 33255 9th St, Union City, CA, 94587

Phone (510) 471-5907

Fax (510) 471-0814

Enumeration date Mar 19, 2014

Last updated in NPPES Mar 19, 2014

Taxonomy & licenses

101Y00000X Counselor Behavioral Health & Social Service Providers · License CHES 394 (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 Martha Estrella?

Martha Estrella is registered in NPPES with the primary taxonomy of Counselor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-03-19.