DR. SHELLY XIAOLEI XING GAMMON MD
NPI 1477799344
Internal Medicine in Moreno Valley, CA
About Dr. Shelly Xiaolei Xing Gammon Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SHELLY XIAOLEI XING GAMMON MD (NPI 1477799344) is an individual internal medicine provider in Moreno Valley, California, licensed in California (A96907) and active in the NPI registry since December 2008. She is enrolled in Medicare PECOS and is a graduate of University Of California, Geffen School Of Medicine (2009).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
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. Shelly Xiaolei Xing Gammon Md 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 Reassignment
Medicare enrollment records show Shelly Xing Gammon 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92555 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 9
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MORENO VALLEY, CA 92555
MORENO VALLEY, CA 92555
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 Shelly Xing Gammon's NPI number?
The NPI number for Shelly Xing Gammon is 1477799344. It was assigned to this individual provider in the NPPES registry on December 26, 2008. The provider is also known as Xiaolei Xing MD.
Where is Shelly Xing Gammon located?
Shelly Xing Gammon practices at 27200 Iris Ave, Moreno Valley, CA 92555. The listed phone number is (866) 984-7483.
What is Shelly Xing Gammon's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Shelly Xing Gammon enrolled in Medicare?
Yes. Shelly Xing Gammon 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 organization bills Medicare for Shelly Xing Gammon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Shelly Xing Gammon 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 Shelly Xing Gammon'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 Shelly Xing Gammon was last updated on December 14, 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.
# Dr. Shelly Xiaolei Xing Gammon, MD · NPI 1477799344
Internal Medicine physician in Moreno Valley, California. Individual provider, active in the CMS NPPES registry since December 26, 2008.
## Identity
- **NPI:** 1477799344 (Entity type: Individual)
- **Enumerated:** December 26, 2008
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** A96907 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 27200 IRIS AVE, Moreno Valley, CA 92555
- **Phone:** (866) 984-7483
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **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
- **Medical school:** University Of California, Geffen School Of Medicine, class of 2009
## Record status
- **NPPES last updated:** December 14, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1477799344) · Data from the CMS NPPES public registry.