Jelena M. Kao, MD
Hematology & Oncology Physician · San Mateo, CA
Jelena M. Kao, MD is a hematology & oncology physician with a practice address in San Mateo, California, and NPI 1932242062, issued on Feb 15, 2007. Check the license (California A83980, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jelena M. Kao
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- A83980 CA
MD-24166 HI
Self-reported in NPPES; status is on the state search - Practice location
- 218 DE Anza Blvd, San Mateo, CA 94402
- Phone
- (650) 341-9131
- Enumerated
- Feb 15, 2007
- Record last updated
- Apr 29, 2025
- Fax
- (650) 341-9135
- Medicare enrollment
- Enrolled (PECOS I20120911000349); accepts Medicare assignment
- Medical or professional school
- Stanford University School Of Medicine, 2005
- 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 218 DE Anza Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kent Adler, M.D.Hematology & Oncology Physician1013074632
- Jennifer Brown, M.D.Hematology & Oncology Physician1740347350
- Ryan ChangMedical Oncology Physician1164985263
- Karen Chee, M.D.Hematology & Oncology Physician1487637310
- Shu Yi Chen, RPHPharmacist1902401250
- Bradley Ekstrand, M.D., PH.D.Hematology & Oncology Physician1528125135
Verify Jelena M. Kao in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A83980Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
60% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
348 Medicare Part D claims for 111 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 29% of claims.
Most prescribed
- Anastrozole60 claims
- Hydroxyurea58 claims
- Letrozole43 claims
- Eliquis30 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $54.60
2 payments; by number, the most common kind was food and beverage; the largest payer was Daiichi Sankyo Inc. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- John Muir Physician NetworkPleasant Hill, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jelena M. Kao among 1,583 hematology & oncology physician records in California
Jelena M. Kao, MD 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 2007, is newer than 46% of them.
- NPI issued2007 · 46% of these records are older, 40% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2005 · median 2003 among the 1,124 with a school on file
- Record last updated2025 · 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 San Mateo → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Kent Adler, M.D.San Mateo, CA 944021013074632
- Jennifer Brown, M.D.San Mateo, CA 944021740347350
- Karen Chee, M.D.San Mateo, CA 944021487637310
- Robert Cohen, MDSan Mateo, CA 944021073034765
- Bradley Ekstrand, M.D., PH.D.San Mateo, CA 944021528125135
- Sirisha Tummala, MDSan Mateo, CA 944021851755151
- Elham Vosoughi, M.D.San Mateo, CA 944021134658669
- Katrina FischerSan Mateo, CA 944011477972388
Common questions
What is Jelena M. Kao, MD's NPI number?
Jelena M. Kao, MD's National Provider Identifier (NPI) is 1932242062, issued on Feb 15, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Jelena M. Kao, MD located?
The NPPES record lists a practice address at 218 DE Anza Blvd, San Mateo, CA, 94402. Phone: (650) 341-9131. Providers update this record themselves, so call before visiting.
How can I verify Jelena M. Kao, MD's license?
NPPES lists California license number A83980, 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 Jelena M. Kao, MD prescribe under Medicare Part D?
In 2024, Jelena M. Kao, MD had 348 Medicare Part D claims for 111 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Jelena M. Kao, MD's MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.