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

Dr. Jeffrey M Warshauer, D.O.

Orthopaedic Surgery Physician in Mountainside, NJ · enumerated 2005.

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

National Provider Identifier

1558360222

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Registry record

Entity type Individual (Type 1)

Name Dr. Jeffrey M Warshauer

Credential D.O.

Sex Male

Practice address Mountainside, NJ, 07092

Phone (908) 364-7801

Fax (908) 222-2757

Enumeration date Jul 15, 2005

Last updated in NPPES Feb 12, 2026

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

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License MB55253 (NJ) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
6501001	Medicaid	NJ	-

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 the NPI number for Jeffrey Warshauer?

The National Provider Identifier (NPI) for Jeffrey Warshauer is 1558360222, a Type 1 (individual) record in the CMS NPPES registry.

Where does Jeffrey Warshauer practice?

The practice location on file with NPPES is in Mountainside, NJ. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Center for Ambulatory Surgery, LLC Ambulatory Surgical Clinic/Center · Mountainside, NJ NPI 1427049352 Crest Mountainside Physical Therapy, PA Physical Therapist · W. Mountainside, NJ NPI 1659616464

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-02-12.