ELLEN C.L. CHEN MD
NPI 1356463319
Pediatrics in Berkeley, CA
About Ellen C.l. Chen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ELLEN C.L. CHEN MD (NPI 1356463319) is an individual pediatrics provider in Berkeley, California, licensed in California (A79824) and active in the NPI registry since April 2007. She is enrolled in Medicare PECOS and maintains a secondary practice location in Oakland.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Ellen C.l. Chen Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Ellen Chen reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Oakland, CA 94607
- Reassigned Medicare billing, California enrollment
- 130 clinicians in this Medicare group
Orinda, CA 94563
- Reassigned Medicare billing, California enrollment
- 4,479 clinicians in this Medicare group
San Francisco, CA 94111
- Reassigned Medicare billing, California enrollment
- 304 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 94704 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Ellen Chen's NPI number?
The NPI number for Ellen Chen is 1356463319. It was assigned to this individual provider in the NPPES registry on April 3, 2007.
Where is Ellen Chen located?
Ellen Chen practices at 2500 Milvia St, Berkeley, CA 94704. The listed phone number is (510) 204-5514.
What is Ellen Chen's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Ellen Chen enrolled in Medicare?
Yes. Ellen Chen is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Ellen Chen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ellen Chen reassigns Medicare benefits to 3 organizations: Asian Health Services (Oakland, CA), Sutter Bay Medical Foundation (Orinda, CA) and American Current Care Of California, A Medical Corporation (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 Ellen 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 Ellen Chen was last updated on September 8, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 56 days 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.
# Ellen C.l. Chen, MD · NPI 1356463319
Pediatrics physician in Berkeley, California. Individual provider, active in the CMS NPPES registry since April 3, 2007.
## Identity
- **NPI:** 1356463319 (Entity type: Individual)
- **Enumerated:** April 3, 2007
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** A79824 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 2500 MILVIA ST, Berkeley, CA 94704-2636
- **Phone:** (510) 204-5514 · **Fax:** (510) 204-5515
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Asian Health Services (NPI 1689744179, Oakland, CA); Sutter Bay Medical Foundation (NPI 1366898538, Orinda, CA); American Current Care Of California, A Medical Corporation (NPI 1932491685, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 8, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1356463319) · Data from the CMS NPPES public registry.