FIONA CHEN
NPI 1225615677
Student in an Organized Health Care Education/Training Program in San Francisco, CA

Active since March 24, 2021PECOS Enrolled
505 PARNASSUS AVE RM M24, SAN FRANCISCO, CA 94143(415) 353-1529 Get Directions Write a Review

NPPES record last updated: October 17, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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

NPI1225615677
Entity TypeIndividualFemale
Primary Taxonomy390200000X
Provider Legal NameFIONA CHEN
Location Address505 PARNASSUS AVE RM M24San Francisco, CA 94143-2204
Mailing Address505 Parnassus Ave Rm M24San Francisco, CA 94143-2204 · (415) 353-1529
Sole ProprietorNo
Enumeration DateMarch 24, 2021
Last NPPES UpdateOctober 17, 2025
NPPES CertifiedOctober 17, 2025
✔ NPI 1225615677 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Taxonomy Code390200000X
Definition
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
Also ListedEmergency MedicineTaxonomy 207P00000X · License A194561 (CA)
505 PARNASSUS AVE RM M24, San Francisco, CA 94143

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).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare 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.

Emergency Medicine
450 STANYAN STREET
San Francisco, CA 94117
  • Reassigned Medicare billing, California enrollment
  • 2,323 clinicians in this Medicare group
Internal Medicine
2238 GEARY
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.

Student in an Organized Health Care Education/Training Program
505 PARNASSUS AVE RM M24
SAN FRANCISCO, CA 94143
Emergency Medicine
505 PARNASSUS AVE RM M24
SAN FRANCISCO, CA 94143
Emergency Medicine
505 PARNASSUS AVE RM M24
SAN FRANCISCO, CA 94143
Emergency Medicine
505 PARNASSUS AVE RM M24
SAN FRANCISCO, CA 94143
Student in an Organized Health Care Education/Training Program
505 PARNASSUS AVE RM M24
SAN FRANCISCO, CA 94143
Student in an Organized Health Care Education/Training Program
505 PARNASSUS AVE RM M24
SAN FRANCISCO, CA 94143
Emergency Medicine
505 PARNASSUS AVE RM M24
SAN FRANCISCO, CA 94143
Emergency Medicine
505 PARNASSUS AVE RM M24
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.