ANTONIO S DIAZ MD
NPI 1902879281
Internal Medicine in Bronx, NY
About Antonio S Diaz Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ANTONIO S DIAZ MD (NPI 1902879281) is an individual internal medicine provider in Bronx, New York, licensed in New York (196305) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS, is affiliated with Montefiore Medical Center, and is a graduate of Other (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 (PECOS)
Antonio S Diaz Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Antonio Diaz 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 7
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, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10461 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.
Referred Medical Equipment & Supplies CMS DME claims 5
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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BRONX, NY 10461
BRONX, NY 10461
BRONX, NY 10461
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 Antonio Diaz's NPI number?
The NPI number for Antonio Diaz is 1902879281. It was assigned to this individual provider in the NPPES registry on February 8, 2006.
Where is Antonio Diaz located?
Antonio Diaz practices at 1250 Waters Pl Suite 507, Bronx, NY 10461. The listed phone number is (718) 792-4500.
What is Antonio Diaz's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Antonio Diaz enrolled in Medicare?
Yes. Antonio Diaz is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Antonio Diaz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Antonio Diaz 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 Antonio Diaz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Antonio Diaz affiliated with any hospitals?
According to CMS data, Antonio Diaz is affiliated with Montefiore Medical Center.
When was this NPI record last updated?
The NPPES record for Antonio Diaz was last updated on November 9, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.