DR. REX A TAI MD
NPI 1811574908
Internal Medicine in New York, NY
About Dr. Rex A Tai Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. REX A TAI MD (NPI 1811574908) is an individual internal medicine provider in New York, New York, licensed in New York (329528) and active in the NPI registry since March 2021. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Rex A Tai Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Rex Tai reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
New York, NY 10035
- Reassigned Medicare billing, New York enrollment
- 1,615 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10035 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.
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 Rex Tai's NPI number?
The NPI number for Rex Tai is 1811574908. It was assigned to this individual provider in the NPPES registry on March 25, 2021.
Where is Rex Tai located?
Rex Tai practices at 1752 Park Ave, New York, NY 10035. The listed phone number is (646) 686-0334.
What is Rex Tai's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Rex Tai enrolled in Medicare?
Yes. Rex Tai is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Rex Tai's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Rex Tai reassigns Medicare benefits to New York City Health And Hospitals Corporation (New York, 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 Rex Tai's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Rex Tai was last updated on January 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.