JOSEPH GRIZZANTI DO
NPI 1932107554
Internal Medicine - Allergy & Immunology in Hawthorne, NJ
About Joseph Grizzanti Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOSEPH GRIZZANTI DO (NPI 1932107554) is an individual allergy & immunology provider in Hawthorne, New Jersey, licensed in New Jersey (33971) and active in the NPI registry since July 2005. He is enrolled in Medicare PECOS, is affiliated with Hackensack University Medical Center, and is a graduate of Philadelphia College Of Osteopathic Medicine (1976).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 5
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Joseph Grizzanti Do is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Joseph Grizzanti reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Paramus, NJ 07652
- Reassigned Medicare billing, New Jersey enrollment
- 833 clinicians in this Medicare group
Oradell, NJ 07649
- Reassigned Medicare billing, New Jersey enrollment
- 22 clinicians in this Medicare group
New York, NY 10025
- Reassigned Medicare billing, New York enrollment
- 5,251 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 15
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Hackensack University Medical Center
Acute Care Hospitals · Hackensack, NJValley Hospital
Acute Care Hospitals · Paramus, NJSt Joseph's University Medical Center Inc
Acute Care Hospitals · Paterson, NJPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 07506 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
Referred Medical Equipment & Supplies CMS DME claims 16
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
HAWTHORNE, NJ 07506
HAWTHORNE, NJ 07506
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Joseph Grizzanti's NPI number?
The NPI number for Joseph Grizzanti is 1932107554. It was assigned to this individual provider in the NPPES registry on July 8, 2005.
Where is Joseph Grizzanti located?
Joseph Grizzanti practices at 297 Lafayette Ave, Hawthorne, NJ 07506. The listed phone number is (973) 790-4111.
What is Joseph Grizzanti's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Allergy & Immunology, with taxonomy code 207RA0201X.
Is Joseph Grizzanti enrolled in Medicare?
Yes. Joseph Grizzanti is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Joseph Grizzanti's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Joseph Grizzanti reassigns Medicare benefits to 3 organizations: Valley Physician Services PC (Paramus, NJ), Sovereign Medical Group LLC (Oradell, NJ) and Montefiore Medical Center (New York, NY). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Joseph Grizzanti's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Joseph Grizzanti accept?
Health plans from Ambetter Health and Ambetter Health of Delaware list Joseph Grizzanti as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Joseph Grizzanti affiliated with any hospitals?
According to CMS data, Joseph Grizzanti is affiliated with Hackensack University Medical Center, Valley Hospital and St Joseph's University Medical Center Inc.
When was this NPI record last updated?
The NPPES record for Joseph Grizzanti was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.