NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Clifton Saunders Otto, MD

Ophthalmology Physician in Honolulu, HI · enumerated 2005.

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

National Provider Identifier

1538164322

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Clifton Saunders Otto
Credential MD
Sex Male
Practice address 1620 Ala Moana Blvd, Ste 500, Honolulu, HI, 96815
Phone (808) 955-0255
Fax (808) 955-4155
Enumeration date Jun 17, 2005
Last updated in NPPES Apr 14, 2014

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License MD12486 (HI) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
593534 Medicaid HI -

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

How do I verify Clifton Otto's NPI record?
Cross-check NPI 1538164322 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1538164322 active?
Yes, as of the latest NPPES snapshot, NPI 1538164322 is active (record last updated 2014-04-14).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-04-14.