NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Apex Retina Institute Incorporated

Retina Specialist (Ophthalmology) Physician in Long Beach, CA · enumerated 2023 · authorized official Darren Knight, Physician.

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

National Provider Identifier

1740995992

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Apex Retina Institute Incorporated
Practice address 2880 Atlantic Ave Ste 290, Long Beach, CA, 90806
Phone (562) 534-1777
Fax (562) 534-1772
Enumeration date Jan 20, 2023
Last updated in NPPES Jan 20, 2023

Taxonomy & classification

207WX0107X Retina Specialist (Ophthalmology) Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Darren Knight
Title Physician
Phone (562) 534-1777

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 is Apex Retina Institute Incorporated located?
The practice location on file with NPPES is in Long Beach, CA.
How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2023-01-20. Verify at npiregistry.cms.hhs.gov.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-01-20.