NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Mark W Beyer LLC

Ophthalmology Physician in Mercerville, NJ · enumerated 2016 · authorized official Mark Beyer, Owner.

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

National Provider Identifier

1336597871

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Mark W Beyer LLC
Practice address 395 Highway 33, Mercerville, NJ, 08619
Phone (609) 981-7183
Enumeration date May 25, 2016
Last updated in NPPES May 25, 2016

Taxonomy & classification

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 25MB09428200 (NJ) Primary

Authorized official

Name Mark Beyer
Title Owner
Phone (609) 981-7183

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 Mark W Beyer LLC?
Mark W Beyer LLC 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 2016-05-25.