Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jeri S Masuda, RN

Registered Nurse in Napa, CA · enumerated 2007.

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

National Provider Identifier

1003957473

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Jeri S Masuda

Credential RN

Sex Female

Practice address 2344 Old Sonoma Rd, Bldg G, Napa, CA, 94559

Phone (707) 253-6033

Fax (707) 253-4880

Enumeration date Feb 9, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 284990 (CA) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN credential

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 Jeri Masuda?

Jeri Masuda is registered in NPPES with the primary taxonomy of Registered Nurse. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Steven Leeds Mental Health Counselor · Napa, CA NPI 1760546279 Ann Finlayson Community Health Registered Nurse · Napa, CA NPI 1922162569 Melissa Meade Mental Health Counselor · Napa, CA NPI 1629132568 Vernice Cooper Marriage & Family Therapist · Napa, CA NPI 1689731267 Veronica Ortiz Advanced Practice Midwife · Napa, CA NPI 1073670311 Sharon Mclaughlin Marriage & Family Therapist · Napa, CA NPI 1881751444 Sheila Cox Women's Health Nurse Practitioner · Napa, CA NPI 1033266226 Norma Carr Registered Nurse · Napa, CA NPI 1043367881

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.