Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Joseph Grizzanti, DO

Allergy & Immunology (Internal Medicine) Physician in Hawthorne, NJ · enumerated 2005 · practices at Respiratory Health and Critical Care Associates, LLC.

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

National Provider Identifier

1932107554

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Registry record

Entity type Individual (Type 1)

Name Joseph Grizzanti

Credential DO

Sex Male

Practice address 297 Lafayette Ave, Hawthorne, NJ, 07506

Phone (973) 790-4111

Fax (973) 790-4330

Enumeration date Jul 8, 2005

Last updated in NPPES Jul 13, 2026

Taxonomy & licenses

207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians · License 33971 (NJ) Secondary

207RA0201X Allergy & Immunology (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 33971 (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
08492890004	Other	-	CIGNA
1207709	Medicaid	NJ	-
1K3901	Other	-	HEALTHNET
2189627	Other	-	AETNA
BS091	Other	-	OXFORD

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.

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Frequently asked questions

What specialty is Joseph Grizzanti?

Joseph Grizzanti is registered in NPPES with the primary taxonomy of Allergy & Immunology (Internal Medicine) Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

Browse all →

Respiratory Health and Critical Care Associates, LLC Specialist · Hawthorne, NJ NPI 1871557843 Omid Dardashti Cardiovascular Disease Physician · Hawthorne, NJ NPI 1639295686 Anthony Mangieri Medical Physician Assistant · Hawthorne, NJ NPI 1881838068

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