HANG SIK BYUN MD
NPI 1073544565
Neurological Surgery in Elmhurst, NY
About Hang Sik Byun Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
HANG SIK BYUN MD (NPI 1073544565) is an individual neurological surgery provider in Elmhurst, New York, licensed in New York (1111711) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.
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)
Hang Sik Byun Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Hang Byun reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Elmhurst, NY 11373
- Reassigned Medicare billing, New York enrollment
- 836 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 11373 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.
ELMHURST, NY 11373
ELMHURST, NY 11373
ELMHURST, NY 11373
QUEENS, NY 11373
ELMHURST, NY 11373
ELMHURST, NY 11373
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 Hang Byun's NPI number?
The NPI number for Hang Byun is 1073544565. It was assigned to this individual provider in the NPPES registry on July 5, 2006.
Where is Hang Byun located?
Hang Byun practices at 79-01 Broadway Room A1-9, Elmhurst, NY 11373. The listed phone number is (718) 334-4952.
What is Hang Byun's specialty?
The primary specialty registered for this NPI is Neurological Surgery with taxonomy code 207T00000X.
Is Hang Byun enrolled in Medicare?
Yes. Hang Byun is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Hang Byun's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Hang Byun reassigns Medicare benefits to Icahn School Of Medicine At Mount Sinai (Elmhurst, 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 Hang Byun'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 Hang Byun was last updated on October 19, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.