Stefano Testa, MD
Medical Oncology Physician · Stanford, CA
Stefano Testa, MD is a medical oncology physician with a practice address in Stanford, California, and NPI 1801424437, issued on Mar 30, 2020. Check the license (California A207384, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Stefano Testa
- Credential
- MD
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- A207384 CA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Pasteur Dr, Stanford, CA 94305
- Phone
- (650) 723-4000
- Enumerated
- Mar 30, 2020
- Record last updated
- Jul 1, 2026
- Medicare enrollment
- Enrolled (PECOS I20260526003872); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 447 in California → Look up another NPI →
Also registered at 300 Pasteur Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Stefano Testa in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A207384Check 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 medical oncology physician in 2024
280 Medicare Part D claims for 72 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. 20 claims were for opioids.
Most prescribed
- Eliquis23 claims
- Abiraterone Acetate16 claims
- Xtandi15 claims
- Gabapentin13 claims
- Orgovyx13 claims
- Prednisone13 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.
Stefano Testa among 447 medical oncology physician records in California
Stefano Testa, MD is one of 447 medical oncology physician records with a practice address in California. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 96% of them.
- NPI issued2020 · 96% of these records are older, 1% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2018 · median 2004 among the 312 with a school on file
- Record last updated2026 · 41% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
82 medical oncology physician records list a practice address in Stanford
They are 82 of the 5,606 NPPES records with a practice address in Stanford, and 447 medical oncology physician records in California.
All 447 in California → Every provider in Stanford → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Priyamvadha Chakravarthi, M.D.Stanford, CA 943051437148061
- Gregory Heestand, M.D.Stanford, CA 943051770568867
- Haruka Itakura, M.D.Stanford, CA 943051669413449
- Howard Lee, MDStanford, CA 943051891702312
- Donald Lombardi, MDStanford, CA 943051053339788
- Min Lu, MDStanford, CA 943051568488526
- Pamela Munster, MDStanford, CA 943051619997145
- Mark Pegram, M.D.Stanford, CA 943051356361554
Common questions
What is Stefano Testa, MD's NPI number?
Stefano Testa, MD's National Provider Identifier (NPI) is 1801424437, issued on Mar 30, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Stefano Testa, MD located?
The NPPES record lists a practice address at 300 Pasteur Dr, Stanford, CA, 94305. Phone: (650) 723-4000. Providers update this record themselves, so call before visiting.
How can I verify Stefano Testa, MD's license?
NPPES lists California license number A207384, 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 Stefano Testa, MD prescribe under Medicare Part D?
In 2024, Stefano Testa, MD had 280 Medicare Part D claims for 72 beneficiaries; the average among medical oncology physician prescribers was 703. 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.