Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mercillina N Ajunwa

Assisted Living Facility in Winchester, CA · enumerated 2023.

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

National Provider Identifier

1255025342

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Registry record

Entity type Individual (Type 1)

Name Mercillina N Ajunwa

Sex Female

Practice address Winchester, CA, 92596

Phone (951) 775-7589

Enumeration date Jun 2, 2023

Last updated in NPPES Jun 12, 2023

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

163WH0200X Home Health Registered Nurse Nursing Service Providers · License 576971 (CA) Secondary

163WW0000X Wound Care Registered Nurse Nursing Service Providers · License 576971 (CA) Secondary

310400000X Assisted Living Facility Nursing & Custodial Care Facilities 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 is the NPI number for Mercillina Ajunwa?

The National Provider Identifier (NPI) for Mercillina Ajunwa is 1255025342, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mercillina Ajunwa practice?

The practice location on file with NPPES is in Winchester, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-06-12.