FIONA CHEN
NPI 1225615677
Student in an Organized Health Care Education/Training Program in San Francisco, CA
About Fiona Chen NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
FIONA CHEN (NPI 1225615677) is an individual student in an organized health care education/training program in San Francisco, California and active in the NPI registry since March 2021. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Fiona Chen is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Fiona Chen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Francisco, CA 94117
- Reassigned Medicare billing, California enrollment
- 2,323 clinicians in this Medicare group
San Francisco, CA 94116
- Reassigned Medicare billing, California enrollment
- 20,078 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.
SAN FRANCISCO, CA 94143
SAN FRANCISCO, CA 94143
SAN FRANCISCO, CA 94143
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 Fiona Chen's NPI number?
The NPI number for Fiona Chen is 1225615677. It was assigned to this individual provider in the NPPES registry on March 24, 2021.
Where is Fiona Chen located?
Fiona Chen practices at 505 Parnassus Ave Rm M24, San Francisco, CA 94143. The listed phone number is (415) 353-1529.
What is Fiona Chen's specialty?
The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.
Is Fiona Chen enrolled in Medicare?
Yes. Fiona Chen is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Fiona Chen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Fiona Chen reassigns Medicare benefits to 2 organizations: Cep America - California (San Francisco, CA) and Permanente Medical Group Inc (San Francisco, CA). 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 Fiona Chen'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 Fiona Chen was last updated on October 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months 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.