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

Mrs. Lesley Jane Masuda

Addiction (Substance Use Disorder) Counselor in Santa Barbara, CA · enumerated 2007.

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

National Provider Identifier

1598891715

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mrs. Lesley Jane Masuda

Sex Female

Practice address Santa Barbara, CA, 93101

Phone (805) 564-6057

Fax (805) 963-8849

Enumeration date Feb 23, 2007

Last updated in NPPES Jul 8, 2007

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

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) 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

Is NPI 1598891715 active?

Yes, as of the latest NPPES snapshot, NPI 1598891715 is active (record last updated 2007-07-08).

How do I verify Lesley Masuda's NPI record?

Cross-check NPI 1598891715 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

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