Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Allison Haders, MD

Emergency Medicine Physician in Elizabeth, NJ · enumerated 2008.

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

National Provider Identifier

1255595583

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Registry record

Entity type Individual (Type 1)

Name Allison Haders

Credential MD

Sex Female

Practice address 225 Williamson St, Emergency Department, Elizabeth, NJ, 07202

Phone (908) 994-5000

Fax (919) 425-0478

Enumeration date Jul 16, 2008

Last updated in NPPES Nov 17, 2009

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 25MA08422800 (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
25MA08422800	Other	NJ	MEDICAL LICENSE

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 1255595583 active?

Yes, as of the latest NPPES snapshot, NPI 1255595583 is active (record last updated 2009-11-17).

How do I verify Allison Haders's NPI record?

Cross-check NPI 1255595583 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 2009-11-17.