Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Ashley Fonseca-Tweed, FNP-BC

Family Nurse Practitioner in Grand Terrace, CA · enumerated 2023.

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

National Provider Identifier

1275316176

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Registry record

Entity type Individual (Type 1)

Name Dr. Ashley Fonseca-Tweed

Credential FNP-BC

Sex Female

Practice address 11980 Mount Vernon Ave, Grand Terrace, CA, 92313

Phone (909) 864-1097

Enumeration date Aug 15, 2023

Last updated in NPPES Feb 26, 2026

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 95025817 (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

What specialty is Ashley Fonseca-Tweed?

Ashley Fonseca-Tweed is registered in NPPES with the primary taxonomy of Family Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-02-26.