STEVEN YI SUN M.D.
NPI 1467831131
Pediatrics in Irvine, CA
About Steven Yi Sun M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
STEVEN YI SUN M.D. (NPI 1467831131) is an individual pediatrics provider in Irvine, California, licensed in California (A145936) and active in the NPI registry since May 2015. He is enrolled in Medicare PECOS and maintains a secondary practice location in Newport Beach.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Steven Yi Sun M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Steven Sun reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Mission Viejo, CA 92691
- Reassigned Medicare billing, California enrollment
- 1,699 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 92618 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
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 Steven Sun's NPI number?
The NPI number for Steven Sun is 1467831131. It was assigned to this individual provider in the NPPES registry on May 27, 2015.
Where is Steven Sun located?
Steven Sun practices at 22 Odyssey Ste 230, Irvine, CA 92618. The listed phone number is (949) 336-1112.
What is Steven Sun's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Steven Sun enrolled in Medicare?
Yes. Steven Sun is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Steven Sun's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Steven Sun reassigns Medicare benefits to Providence Medical Foundation (Mission Viejo, CA). 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 Steven Sun'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 Steven Sun was last updated on May 18, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.