CHEN CHEN MD
NPI 1255710109
Pediatrics in Palo Alto, CA
About Chen Chen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHEN CHEN MD (NPI 1255710109) is an individual pediatrics provider in Palo Alto, California, licensed in California (A153861) and active in the NPI registry since May 2015. She is enrolled in Medicare PECOS and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Chen Chen Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Chen Chen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Palo Alto, CA 94304
- Reassigned Medicare billing, California enrollment
- 3,617 clinicians in this Medicare group
Gaithersburg, MD 20879
- Reassigned Medicare billing, District of Columbia enrollment
- 2,492 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 94304 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 Chen Chen's NPI number?
The NPI number for Chen Chen is 1255710109. It was assigned to this individual provider in the NPPES registry on May 26, 2015.
Where is Chen Chen located?
Chen Chen practices at 725 Welch Rd, Palo Alto, CA 94304. The listed phone number is (650) 497-8000.
What is Chen Chen's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Chen Chen enrolled in Medicare?
Yes. Chen Chen is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Chen Chen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Chen Chen reassigns Medicare benefits to 2 organizations: Lpch Medical Group Div Of Lucile (Palo Alto, CA) and Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (Gaithersburg, MD). 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 Chen 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 Chen Chen was last updated on April 10, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Chen Chen, MD · NPI 1255710109
Pediatrics physician in Palo Alto, California. Individual provider, active in the CMS NPPES registry since May 26, 2015.
## Identity
- **NPI:** 1255710109 (Entity type: Individual)
- **Enumerated:** May 26, 2015
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** A153861 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 725 WELCH RD, Palo Alto, CA 94304-1601
- **Phone:** (650) 497-8000
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Lpch Medical Group Div Of Lucile (NPI 1417907940, Palo Alto, CA); Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (NPI 1831471713, Gaithersburg, MD) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 10, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1255710109) · Data from the CMS NPPES public registry.