NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

William R Beyer Jr

Optometrist in Mercerville, NJ · enumerated 2014 · authorized official William Beyer, Owner.

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

National Provider Identifier

1417358268

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name William R Beyer Jr
Practice address 395 Highway 33, Mercerville, NJ, 08619
Enumeration date Sep 11, 2014
Last updated in NPPES Sep 11, 2014

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers Primary
207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians Secondary

Authorized official

Name William Beyer
Title Owner

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 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.
What type of organization is William R Beyer Jr?
William R Beyer Jr is registered in NPPES as a Optometrist (its primary provider taxonomy).

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-09-11.