NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Andrew Keiichi Marshall, OD

Optometrist in Rancho Palos Verdes, CA · enumerated 2024.

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

National Provider Identifier

1598591216

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Andrew Keiichi Marshall
Credential OD
Sex Male
Practice address 28901 S Western Ave Ste 129, Rancho Palos Verdes, CA, 90275
Phone (310) 221-3676
Enumeration date Sep 10, 2024
Last updated in NPPES Sep 10, 2024

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 35840 (CA) Primary
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD 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

What is the NPI number for Andrew Marshall?
The National Provider Identifier (NPI) for Andrew Marshall is 1598591216, a Type 1 (individual) record in the CMS NPPES registry.
Where does Andrew Marshall practice?
The practice location on file with NPPES is in Rancho Palos Verdes, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-09-10.