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

Ms. Margaret Kathleen Kimball, RN, BSN

Nursing Care Agency in San Jose, CA · enumerated 2023.

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

National Provider Identifier

1639953441

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Ms. Margaret Kathleen Kimball

Credential RN, BSN

Sex Female

Practice address San Jose, CA, 95135

Phone (650) 773-0372

Enumeration date Aug 22, 2023

Last updated in NPPES Aug 22, 2023

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

Taxonomy & licenses

364SF0001X Family Health Clinical Nurse Specialist Physician Assistants & Advanced Practice Nursing Providers · License 431825 (CA) Secondary

251J00000X Nursing Care Agency Agencies · License 431825 (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

Where does Margaret Kimball practice?

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

What is the NPI number for Margaret Kimball?

The National Provider Identifier (NPI) for Margaret Kimball is 1639953441, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-22.