NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Robert A Clark MD Medical Corporation

Ophthalmology Physician in Long Beach, CA · enumerated 2021 · authorized official Robert Clark, President.

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

National Provider Identifier

1295494961

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Robert A Clark MD Medical Corporation
Other name <Unavail>
Practice address 4401 Atlantic Ave Ste 410, Long Beach, CA, 90807
Fax (562) 459-3364
Enumeration date Dec 10, 2021
Last updated in NPPES Jul 29, 2022

Taxonomy & classification

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Robert Clark
Title President

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 type of organization is Robert A Clark MD Medical Corporation?
Robert A Clark MD Medical Corporation is registered in NPPES as a Ophthalmology Physician (its primary provider taxonomy).
What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-29.