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GERALDINE UY CHEN MD
NPI 1306027834
Pediatrics in Arcadia, CA

Active since November 27, 2007PECOS Enrolled
520 WORKMAN AVE, ARCADIA, CA 91007(626) 446-8904 Get Directions Write a Review

NPPES record last updated: December 6, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Geraldine Uy Chen Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GERALDINE UY CHEN MD (NPI 1306027834) is an individual pediatrics provider in Arcadia, California, licensed in California (A106526) and active in the NPI registry since November 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1306027834
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameGERALDINE UY CHENCredential: MD
Location Address520 WORKMAN AVEArcadia, CA 91007-8455
Mailing Address520 Workman AveArcadia, CA 91007-8455 · (626) 446-8904
Phone(626) 446-8904
Sole ProprietorNo
Enumeration DateNovember 27, 2007
Last NPPES UpdateDecember 6, 2021
✔ NPI 1306027834 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in CA · A106526
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
520 WORKMAN AVE, Arcadia, CA 91007
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Geraldine Uy Chen Md 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 Reassignment

Medicare enrollment records show Geraldine Chen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Southern California Permanente Medical Group
2.5 mi
Health Maintenance Organization
3600 ROSEMEAD BLVD
Rosemead, CA 91770
  • Reassigned Medicare billing, California enrollment
  • 13,921 clinicians in this Medicare group
NPI 1942787114 (877) 608-0044

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 91007 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Geraldine Chen's NPI number?

The NPI number for Geraldine Chen is 1306027834. It was assigned to this individual provider in the NPPES registry on November 27, 2007.

Where is Geraldine Chen located?

Geraldine Chen practices at 520 Workman Ave, Arcadia, CA 91007. The listed phone number is (626) 446-8904.

What is Geraldine Chen's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Geraldine Chen enrolled in Medicare?

Yes. Geraldine Chen is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Geraldine Chen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Geraldine Chen reassigns Medicare benefits to Southern California Permanente Medical Group (Rosemead, 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 Geraldine 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 Geraldine Chen 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.