IOANNIS MANTZARIS M.D
NPI 1871865519
Legal Medicine in Bronx, NY
About Ioannis Mantzaris M.d NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
IOANNIS MANTZARIS M.D (NPI 1871865519) is an individual legal medicine provider in Bronx, New York and active in the NPI registry since January 2012. He is enrolled in Medicare PECOS, is affiliated with Montefiore Medical Center, and is a graduate of Other (2002).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Ioannis Mantzaris M.d is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Ioannis Mantzaris reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Bronx, NY 10467
- 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 2
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.
Montefiore Medical Center
Acute Care Hospitals · Bronx, NYMedicare 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.
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.
BRONX, NY 10467
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 Ioannis Mantzaris's NPI number?
The NPI number for Ioannis Mantzaris is 1871865519. It was assigned to this individual provider in the NPPES registry on January 26, 2012.
Where is Ioannis Mantzaris located?
Ioannis Mantzaris practices at 111 E 210th St, Bronx, NY 10467. The listed phone number is (718) 920-4826.
What is Ioannis Mantzaris's specialty?
The primary specialty registered for this NPI is Legal Medicine with taxonomy code 173000000X.
Is Ioannis Mantzaris enrolled in Medicare?
Yes. Ioannis Mantzaris is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Ioannis Mantzaris's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ioannis Mantzaris reassigns Medicare benefits to Montefiore Medical Center (Bronx, NY). The 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 Ioannis Mantzaris's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Ioannis Mantzaris affiliated with any hospitals?
According to CMS data, Ioannis Mantzaris is affiliated with Montefiore Medical Center.
When was this NPI record last updated?
The NPPES record for Ioannis Mantzaris was last updated on January 26, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.