Xi Zhai, DO
Family Medicine Physician · Castro Valley, CA
Xi Zhai, DO is a family medicine physician with a practice address in Castro Valley, California, and NPI 1083148050, issued on Apr 17, 2017. Check the license (California 17505, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Xi Zhai
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 17505 CA
Self-reported in NPPES; status is on the state search - Practice location
- 19845 Lake Chabot RD Ste 205, Castro Valley, CA 94546
- Phone
- (510) 582-6424
- Enumerated
- Apr 17, 2017
- Record last updated
- Mar 6, 2022
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 19845 Lake Chabot RD Ste 205
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Christina Cu-Unjieng, PT, DPTPhysical Therapist1003214032
- Inna Lipkind, NPNurse Practitioner1407563331
- Rinku Shrivastava, M.D.Family Medicine Physician1225369119
- Parminder SidhuFamily Nurse Practitioner1225786049
Verify Xi Zhai in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 17505Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Xi Zhai among 17,133 family medicine physician records in California
Xi Zhai, DO is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 79% of them.
- NPI issued2017 · 79% of these records are older, 18% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2022 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
22 family medicine physician records list a practice address in Castro Valley
They are 22 of the 999 NPPES records with a practice address in Castro Valley, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Castro Valley → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Ahmad Ayoubi, M.D., M.SCastro Valley, CA 945461992926075
- Huong Dang, MDCastro Valley, CA 945461417390071
- Elmer Jason Grande, MDCastro Valley, CA 945461235323007
- Peter Hein, MDCastro Valley, CA 945461497803282
- Bhoomika Kamath, M.D.Castro Valley, CA 945461295991354
- Jaya Karnani, MDCastro Valley, CA 945461457309783
- Genevieve King, M. D.Castro Valley, CA 945461861561243
- Christopher Moore, MDCastro Valley, CA 945461437417029
Common questions
What is Xi Zhai, DO's NPI number?
Xi Zhai, DO's National Provider Identifier (NPI) is 1083148050, issued on Apr 17, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Xi Zhai, DO located?
The NPPES record lists a practice address at 19845 Lake Chabot RD Ste 205, Castro Valley, CA, 94546. Phone: (510) 582-6424. Providers update this record themselves, so call before visiting.
How can I verify Xi Zhai, DO's license?
NPPES lists California license number 17505, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Xi Zhai, DO's MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.