GUIFENG SUN M.D.
NPI 1255593026
Specialist in Riverside, CA
About Guifeng Sun M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GUIFENG SUN M.D. (NPI 1255593026) is an individual specialist in Riverside, California, licensed in California (A114413) and active in the NPI registry since July 2008. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Guifeng Sun M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Guifeng Sun reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Riverside, CA 92505
- Reassigned Medicare billing, California enrollment
- 5,228 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.
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.
RIVERSIDE, CA 92505
RIVERSIDE, CA 92505
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 Guifeng Sun's NPI number?
The NPI number for Guifeng Sun is 1255593026. It was assigned to this individual provider in the NPPES registry on July 2, 2008.
Where is Guifeng Sun located?
Guifeng Sun practices at 10800 Magnolia Ave, Riverside, CA 92505. The listed phone number is (915) 353-2000.
What is Guifeng Sun's specialty?
The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.
Is Guifeng Sun enrolled in Medicare?
Yes. Guifeng Sun is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Guifeng Sun's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Guifeng Sun reassigns Medicare benefits to Southern California Permanente Medical Group (Riverside, 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 Guifeng 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 Guifeng Sun was last updated on December 6, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Guifeng Sun, M.D. · NPI 1255593026
Specialist provider in Riverside, California. Individual provider, active in the CMS NPPES registry since July 2, 2008.
## Identity
- **NPI:** 1255593026 (Entity type: Individual)
- **Enumerated:** July 2, 2008
- **Primary specialty:** Specialist · taxonomy 174400000X
- **State license:** A114413 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 10800 MAGNOLIA AVE, Riverside, CA 92505-3043
- **Phone:** (915) 353-2000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Southern California Permanente Medical Group (NPI 1316979834, Riverside, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** December 6, 2021
---
Source: [NPI Profile](https://npiprofile.com/npi/1255593026) · Data from the CMS NPPES public registry.