NPI Portal NPI Lookup & Verification

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

Dr. Hans Soo Boysen III, D.C.

Chiropractor in Winnetka, CA · enumerated 2007 · practices at Robert W Rigg Jr. MD.

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

National Provider Identifier

1043364177

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Hans Soo Boysen III
Credential D.C.
Sex Male
Practice address Winnetka, CA, 91306
Phone (818) 709-5700
Enumeration date Jan 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

111N00000X Chiropractor Chiropractic Providers · License DC21646 (CA) Primary
DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC 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 Hans Boysen practice?
The practice location on file with NPPES is in Winnetka, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Hans Boysen?
The National Provider Identifier (NPI) for Hans Boysen is 1043364177, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

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