Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Louis J. Arno M.D.

Q: What type of organization is Louis J. Arno M.D.?

Louis J. Arno M.D. is registered in NPPES as a Pulmonary Disease Physician (its primary provider taxonomy).

Pulmonary Disease Physician in Branchburg, NJ · enumerated 2019 · authorized official Louis Arno, Ceo.

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

National Provider Identifier

1558835199

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)

Legal business name Louis J. Arno M.D.

Practice address 3322 Route 22 Ste 605, Branchburg, NJ, 08876

Phone (908) 256-9782

Fax (908) 428-7529

Enumeration date Jan 16, 2019

Last updated in NPPES Jan 16, 2019

Taxonomy & classification

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Louis Arno

Title Ceo

Phone (908) 256-9782

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 Louis J. Arno M.D.?

Louis J. Arno M.D. is registered in NPPES as a Pulmonary Disease 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 →

Louis Arno Pulmonary Disease Physician · Branchburg, NJ NPI 1720185978

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-01-16.