NPPES file of Aug 9, 2026

Elham Vosoughi, M.D.

Hematology & Oncology Physician · San Mateo, CA

Elham Vosoughi, M.D. is a hematology & oncology physician with a practice address in San Mateo, California, and NPI 1134658669, issued on Jun 8, 2017. Check the license (California A164676, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1134658669
Name
Elham Vosoughi
Credential
M.D.
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License number
A164676 CA
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
Jun 8, 2017
Record last updated
Jul 7, 2023
Medicare enrollment
Enrolled (PECOS I20230907001498); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 218 DE Anza Blvd

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Kent Adler, M.D.Hematology & Oncology Physician1013074632
  2. Jennifer Brown, M.D.Hematology & Oncology Physician1740347350
  3. Ryan ChangMedical Oncology Physician1164985263
  4. Karen Chee, M.D.Hematology & Oncology Physician1487637310
  5. Shu Yi Chen, RPHPharmacist1902401250
  6. Bradley Ekstrand, M.D., PH.D.Hematology & Oncology Physician1528125135

Verify Elham Vosoughi in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A164676
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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64% fewer Medicare Part D claims than the average hematology & oncology physician in 2024

314 Medicare Part D claims for 88 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.

  1. Elham Vosoughi314
  2. Specialty average877

Most prescribed

  1. Anastrozole111 claims
  2. Letrozole19 claims
  3. Ondansetron Hcl19 claims
  4. Prochlorperazine Maleate15 claims
  5. Dexamethasone13 claims
  6. Tamoxifen Citrate13 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

  1. Ucsf Medical Group Business ServicesBurlingame, CA
  2. University OF California San FranciscoSan Francisco, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Elham Vosoughi among 1,583 hematology & oncology physician records in California

Elham Vosoughi, M.D. 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 2017, is newer than 89% of them.

  • NPI issued2017 · 89% of these records are older, 8% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 71% of these records are
  • Graduated2009 · median 2003 among the 1,124 with a school on file
  • Record last updated2023 · 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.

The 8 hematology & oncology physician records with the nearest ZIP codes

  1. Kent Adler, M.D.San Mateo, CA 944021013074632
  2. Jennifer Brown, M.D.San Mateo, CA 944021740347350
  3. Karen Chee, M.D.San Mateo, CA 944021487637310
  4. Robert Cohen, MDSan Mateo, CA 944021073034765
  5. Bradley Ekstrand, M.D., PH.D.San Mateo, CA 944021528125135
  6. Jelena Kao, MDSan Mateo, CA 944021932242062
  7. Sirisha Tummala, MDSan Mateo, CA 944021851755151
  8. Katrina FischerSan Mateo, CA 944011477972388

Common questions

What is Elham Vosoughi, M.D.'s NPI number?

Elham Vosoughi, M.D.'s National Provider Identifier (NPI) is 1134658669, issued on Jun 8, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Elham Vosoughi, M.D. 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 Elham Vosoughi, M.D.'s license?

NPPES lists California license number A164676, 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 Elham Vosoughi, M.D. prescribe under Medicare Part D?

In 2024, Elham Vosoughi, M.D. had 314 Medicare Part D claims for 88 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.