DR. HAI SUN M.D.
NPI 1952507774
Neurological Surgery in New Brunswick, NJ
About Dr. Hai Sun M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. HAI SUN M.D. (NPI 1952507774) is an individual neurological surgery provider in New Brunswick, New Jersey, licensed in New Jersey (25MA10662700) and active in the NPI registry since June 2007. He is enrolled in Medicare PECOS, is affiliated with Robert Wood Johnson University Hospital, and maintains a secondary practice location in Shreveport.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Accepted Insurance
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
Dr. Hai Sun M.d. 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 Hai Sun reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New Brunswick, NJ 08901
- Reassigned Medicare billing, New Jersey enrollment
- 259 clinicians in this Medicare group
Newark, NJ 07103
- Reassigned Medicare billing, New Jersey enrollment
- 13 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
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.
Robert Wood Johnson University Hospital
Acute Care Hospitals · New Brunswick, NJPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 08901 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 11
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 Hai Sun's NPI number?
The NPI number for Hai Sun is 1952507774. It was assigned to this individual provider in the NPPES registry on June 27, 2007.
Where is Hai Sun located?
Hai Sun practices at 10 Plum St Fl 5, New Brunswick, NJ 08901. The listed phone number is (732) 235-6333.
What is Hai Sun's specialty?
The primary specialty registered for this NPI is Neurological Surgery with taxonomy code 207T00000X.
Is Hai Sun enrolled in Medicare?
Yes. Hai Sun 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 Hai Sun's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Hai Sun reassigns Medicare benefits to 2 organizations: Rutgers Health-Rwj Neurosurgery Faculty (New Brunswick, NJ) and University Physician Associates Of New Jersey Inc (Newark, 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 Hai Sun's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Hai Sun accept?
Health plans from Ambetter Health, Ambetter Health of Delaware and Oscar Health list Hai Sun as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Hai Sun affiliated with any hospitals?
According to CMS data, Hai Sun is affiliated with Robert Wood Johnson University Hospital.
When was this NPI record last updated?
The NPPES record for Hai Sun was last updated on July 23, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.