XI ZHAI DO
NPI 1083148050
Family Medicine in Castro Valley, CA
About Xi Zhai Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
XI ZHAI DO (NPI 1083148050) is an individual family medicine provider in Castro Valley, California, licensed in California (17505) and active in the NPI registry since April 2017. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Xi Zhai Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
4Medicare enrollment records show Xi Zhai reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
South San Francisco, CA 94080
- Reassigned Medicare billing, California enrollment
- 304 clinicians in this Medicare group
Sacramento, CA 95816
- Reassigned Medicare billing, California enrollment
- 37 clinicians in this Medicare group
Glendale, CA 91214
- Reassigned Medicare billing, California enrollment
- 34 clinicians in this Medicare group
Los Angeles, CA 90025
- Reassigned Medicare billing, California enrollment
- 51 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 94546 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CASTRO VALLEY, CA 94546
CASTRO VALLEY, CA 94546
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 Zhai's NPI number?
The NPI number for Xi Zhai is 1083148050. It was assigned to this individual provider in the NPPES registry on April 17, 2017.
Where is Xi Zhai located?
Xi Zhai practices at 19845 Lake Chabot Rd Ste 205, Castro Valley, CA 94546. The listed phone number is (510) 582-6424.
What is Xi Zhai's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Xi Zhai enrolled in Medicare?
Yes. Xi Zhai is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Xi Zhai's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Xi Zhai reassigns Medicare benefits to 4 organizations: American Current Care Of California, A Medical Corporation (South San Francisco, CA), Skilled Biologics, Inc. (Sacramento, CA), Skilled Physicians Group (Glendale, CA) and Skilled Facility Health Care Solutions Inc (Los Angeles, 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 Xi Zhai'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 Zhai was last updated on March 6, 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 Zhai, DO · NPI 1083148050
Family Medicine physician in Castro Valley, California. Individual provider, active in the CMS NPPES registry since April 17, 2017.
## Identity
- **NPI:** 1083148050 (Entity type: Individual)
- **Enumerated:** April 17, 2017
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 17505 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 19845 LAKE CHABOT RD STE 205, Castro Valley, CA 94546-4055
- **Phone:** (510) 582-6424
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): American Current Care Of California, A Medical Corporation (NPI 1396294682, South San Francisco, CA); Skilled Biologics, Inc. (NPI 1376386763, Sacramento, CA); Skilled Physicians Group (NPI 1902444623, Glendale, CA); Skilled Facility Health Care Solutions Inc (NPI 1073763462, Los Angeles, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 6, 2022
---
Source: [NPI Profile](https://npiprofile.com/npi/1083148050) · Data from the CMS NPPES public registry.