Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Erwin J Oei, MD

Pulmonary Disease Physician in Summit, NJ · enumerated 2005.

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

National Provider Identifier

1659373421

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Registry record

Entity type Individual (Type 1)

Name Erwin J Oei

Credential MD

Sex Male

Practice address Summit, NJ, 07901

Phone (908) 934-0555

Enumeration date Aug 11, 2005

Last updated in NPPES Feb 3, 2017

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License 25MA07010700 (NJ) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
222233003	Other	NJ	HORIZON INS,
2974224	Other	NJ	AETNA INS
7VC204	Other	NJ	EMPIRE INS
163925	Other	NJ	CHN INS.
P2669917	Other	NJ	OXFORD INS.

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

Is NPI 1659373421 active?

Yes, as of the latest NPPES snapshot, NPI 1659373421 is active (record last updated 2017-02-03).

How do I verify Erwin Oei's NPI record?

Cross-check NPI 1659373421 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Federico Cerrone Sleep Medicine (Internal Medicine) Physician · Summit, NJ NPI 1184625220 Robert Restifo Pulmonary Disease Physician · Summit, NJ NPI 1760483804 Edward Dimitry Pulmonary Disease Physician · Summit, NJ NPI 1275534323 Louis Messano Physician Assistant · Summit, NJ NPI 1568463636 Frederic Scoopo Pulmonary Disease Physician · Summit, NJ NPI 1750382818 Robert Sussman Specialist · Summit, NJ NPI 1831190990 Jeffrey Nahmias Sleep Medicine (Internal Medicine) Physician · Summit, NJ NPI 1881654036 Pulmonary & Allergy Associates, PA Specialist · Summit, NJ NPI 1346280518

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-02-03.