XI CHEN M.D.
NPI 1679991210
Psychiatry & Neurology - Child & Adolescent Psychiatry in San Rafael, CA
About Xi Chen M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
XI CHEN M.D. (NPI 1679991210) is an individual child & adolescent psychiatry provider in San Rafael, California, licensed in California (A139103) and active in the NPI registry since April 2014. She is enrolled in Medicare PECOS, maintains a secondary practice location in Boston, and is a graduate of University Of Massachusetts Medical School (2014).
NPPES Registry Identity
Specialties & Licenses 2
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 and accepts Medicare assignment
Xi Chen M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Xi Chen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Olympia, WA 98512
- Reassigned Medicare billing, Washington enrollment
- 4,383 clinicians in this Medicare group
Worcester, MA 01604
- Reassigned Medicare billing, Massachusetts enrollment
- 59 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 RAFAEL, CA 94901
SAN RAFAEL, CA 94901
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 Xi Chen's NPI number?
The NPI number for Xi Chen is 1679991210. It was assigned to this individual provider in the NPPES registry on April 1, 2014.
Where is Xi Chen located?
Xi Chen practices at 3230 Kerner Blvd, San Rafael, CA 94901. The listed phone number is (415) 473-6724.
What is Xi Chen's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Child & Adolescent Psychiatry, with taxonomy code 2084P0804X.
Is Xi Chen enrolled in Medicare?
Yes. Xi Chen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Xi Chen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Xi Chen reassigns Medicare benefits to 2 organizations: Multicare Health System (Olympia, WA) and The Commonwealth Of Massachusetts (Worcester, MA). 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 Xi 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 Xi Chen was last updated on April 12, 2022. 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.
# Xi Chen, M.D. · NPI 1679991210
Child & Adolescent Psychiatry physician in San Rafael, California. Individual provider, active in the CMS NPPES registry since April 1, 2014.
## Identity
- **NPI:** 1679991210 (Entity type: Individual)
- **Enumerated:** April 1, 2014
- **Primary specialty:** Psychiatry & Neurology - Child & Adolescent Psychiatry · taxonomy 2084P0804X
- **State license:** A139103 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 3230 KERNER BLVD, San Rafael, CA 94901-4840
- **Phone:** (415) 473-6724
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **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): Multicare Health System (NPI 1831609775, Olympia, WA); The Commonwealth Of Massachusetts (NPI 1275680456, Worcester, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Massachusetts Medical School, class of 2014
## Record status
- **NPPES last updated:** April 12, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1679991210) · Data from the CMS NPPES public registry.