Kun Xiao, MD MPH
Hematology & Oncology Physician · Castro Valley, CA
Kun Xiao, MD MPH is a hematology & oncology physician with a practice address in Castro Valley, California, and NPI 1710326889, issued on Jun 21, 2013. Check the license (California C203998, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Kun Xiao
- Credential
- MD MPH
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- C203998 CA
70244 WI
Self-reported in NPPES; status is on the state search - Practice location
- 20130 Lake Chabot RD Ste 307, Castro Valley, CA 94546
- Phone
- (510) 204-8383
- Enumerated
- Jun 21, 2013
- Record last updated
- Jul 22, 2026
- Fax
- (510) 506-7729
- Medicare enrollment
- Enrolled (PECOS I20190624000718); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →
Also registered at 20130 Lake Chabot RD Ste 307
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nitin TandanCardiovascular Disease Physician1346777026
Verify Kun Xiao in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C203998Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% more Medicare Part D claims than the average hematology & oncology physician in 2024
1,711 Medicare Part D claims for 245 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. 134 claims were for opioids.
Most prescribed
- Prednisone141 claims
- Anastrozole113 claims
- Acyclovir107 claims
- Abiraterone Acetate102 claims
- Prochlorperazine Maleate101 claims
- Eliquis70 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through 2 group practices
- Aurora Health Care Central, Inc.Sheboygan, WI
- Sutter Bay Medical FoundationCastro Valley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kun Xiao among 1,583 hematology & oncology physician records in California
Kun Xiao, MD MPH is one of 1,583 hematology & oncology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 79% of them.
- NPI issued2013 · 79% of these records are older, 19% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2010 · median 2003 among the 1,124 with a school on file
- Record last updated2026 · 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 207RH0003X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in California
There are 1,583 hematology & oncology physician records in California.
All 1,583 in California → Every provider in Castro Valley → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Suguna Chirla, M.DCastro Valley, CA 945461124105176
- Mahboub Noori, MDCastro Valley, CA 945461831695915
- Usha Sunkara, M.D,Castro Valley, CA 945461346267028
- Neha Desouza, MDHayward, CA 945451598109324
- Grant Goodman, MDHayward, CA 945451154495760
- Michael Jensen-Akula, MDHayward, CA 945451871671636
- Howard Kleckner, MDHayward, CA 945451386722148
- Qaiser Niaz, MDHayward, CA 945451528056389
Common questions
What is Kun Xiao, MD MPH's NPI number?
Kun Xiao, MD MPH's National Provider Identifier (NPI) is 1710326889, issued on Jun 21, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Kun Xiao, MD MPH located?
The NPPES record lists a practice address at 20130 Lake Chabot RD Ste 307, Castro Valley, CA, 94546. Phone: (510) 204-8383. Providers update this record themselves, so call before visiting.
How can I verify Kun Xiao, MD MPH's license?
NPPES lists California license number C203998, 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.
How much does Kun Xiao, MD MPH prescribe under Medicare Part D?
In 2024, Kun Xiao, MD MPH had 1,711 Medicare Part D claims for 245 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
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.