Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Matthew D Epstein, MD

Sleep Medicine (Internal Medicine) Physician in Cedar Knolls, NJ · enumerated 2005.

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

National Provider Identifier

1922000793

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Registry record

Entity type Individual (Type 1)

Name Matthew D Epstein

Credential MD

Sex Male

Practice address 8 Saddle Rd, First Floor, Cedar Knolls, NJ, 07927

Phone (973) 267-9393

Fax (973) 540-0472

Enumeration date Aug 11, 2005

Last updated in NPPES Feb 26, 2018

Taxonomy & licenses

207RS0012X Sleep Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 25MA06940100 (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
P1856058	Other	NJ	OXFORD INS.
5711542	Other	NJ	AETNA INS.
137679	Other	NJ	CHN INS.
0994157003	Other	NJ	CIGNA INS.
290011815	Other	NJ	RAILROAD MEDICARE
222233003	Other	NJ	HORIZON BC
6V9771	Other	NJ	EMPIRE HEALTH

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 1922000793 active?

Yes, as of the latest NPPES snapshot, NPI 1922000793 is active (record last updated 2018-02-26).

How do I verify Matthew Epstein's NPI record?

Cross-check NPI 1922000793 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-02-26.