JOHN FONTANETTA MD
NPI 1457380701
Emergency Medicine in Belleville, NJ
About John Fontanetta Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN FONTANETTA MD (NPI 1457380701) is an individual emergency medicine provider in Belleville, New Jersey, licensed in New Jersey (25MA05776900) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Clara Maass Medical Center, and is a graduate of Js Weill Medical College, Cornell University (1983).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
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
John Fontanetta Md 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
2Medicare enrollment records show John Fontanetta reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Livingston, NJ 07039
- Reassigned Medicare billing, New Jersey enrollment
- 1,913 clinicians in this Medicare group
Somerset, NJ 08873
- Reassigned Medicare billing, New Jersey enrollment
- 1,557 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 4
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Clara Maass Medical Center
Acute Care Hospitals · Belleville, NJPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 07109 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BELLEVILLE, NJ 07109
BELLEVILLE, NJ 07109
BELLEVILLE, NJ 07109
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 John Fontanetta's NPI number?
The NPI number for John Fontanetta is 1457380701. It was assigned to this individual provider in the NPPES registry on June 30, 2006.
Where is John Fontanetta located?
John Fontanetta practices at 1 Clara Maass Dr Clara Maass Medical Center (emergency Department), Belleville, NJ 07109. The listed phone number is (973) 450-2100.
What is John Fontanetta's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is John Fontanetta enrolled in Medicare?
Yes. John Fontanetta 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 John Fontanetta's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Fontanetta reassigns Medicare benefits to 2 organizations: Rwjbh Observation Associates LLC (Livingston, NJ) and Rwjbh Emergency Medicine Associates, LLC (Somerset, NJ). 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 John Fontanetta's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is John Fontanetta affiliated with any hospitals?
According to CMS data, John Fontanetta is affiliated with Clara Maass Medical Center.
When was this NPI record last updated?
The NPPES record for John Fontanetta was last updated on April 14, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years 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.
# John Fontanetta, MD · NPI 1457380701
Emergency Medicine physician in Belleville, New Jersey. Individual provider, active in the CMS NPPES registry since June 30, 2006.
## Identity
- **NPI:** 1457380701 (Entity type: Individual)
- **Enumerated:** June 30, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 25MA05776900 (New Jersey)
- **Sole proprietor:** No
## Practice location
- **Address:** 1 CLARA MAASS DR, CLARA MAASS MEDICAL CENTER (EMERGENCY DEPARTMENT), Belleville, NJ 07109-3550
- **Phone:** (973) 450-2100
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Rwjbh Observation Associates LLC (NPI 1760095806, Livingston, NJ); Rwjbh Emergency Medicine Associates, LLC (NPI 1912510041, Somerset, NJ) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Js Weill Medical College, Cornell University, class of 1983
## Record status
- **NPPES last updated:** April 14, 2008
- **Other identifiers:** Medicare PIN 005923 (NJ); Medicare UPIN A60886; Medicaid 7492006 (NJ)
---
Source: [NPI Profile](https://npiprofile.com/npi/1457380701) · Data from the CMS NPPES public registry.