Madeleine Oster, DNP, NP
Nurse Practitioner · Stanford, CA
Madeleine Oster, DNP, NP is a nurse practitioner with a practice address in Stanford, California, and NPI 1023654084, issued on Nov 25, 2019. Check the license (California 95013926, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Madeleine Oster
- Credential
- DNP, NP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 95013926 CA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Pasteur Dr, Stanford, CA 94305
- Phone
- (650) 723-4000
- Enumerated
- Nov 25, 2019
- Record last updated
- Dec 30, 2025
- Medicare enrollment
- Enrolled (PECOS I20200522001168); accepts Medicare assignment
- Medical or professional school
- University Of Alabama School Of Medicine, 2019
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 8,223 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 Madeleine Oster in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 95013926Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
61% fewer Medicare Part D claims than the average nurse practitioner in 2024
432 Medicare Part D claims for 120 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 38% of claims.
Most prescribed
- Eliquis112 claims
- Metoprolol Succinate74 claims
- Flecainide Acetate47 claims
- Xarelto44 claims
- Amiodarone Hcl19 claims
- Diltiazem 24hr Er (Cd)19 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 76.5 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).
One hospital affiliation
- Stanford Health CareSan Jose, CA · Acute Care Hospitals5 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Madeleine Oster among 8,223 nurse practitioner records in California
Madeleine Oster, DNP, NP is one of 8,223 nurse practitioner records with a practice address in California. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 61% of them.
- NPI issued2019 · 61% of these records are older, 34% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 42% of these records are
- Graduated2019 · median 2017 among the 3,425 with a school on file
- Record last updated2025 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
572 nurse practitioner records list a practice address in Stanford
They are 572 of the 5,606 NPPES records with a practice address in Stanford, and 8,223 nurse practitioner records in California.
All 8,223 in California → Every provider in Stanford → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
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- Lizbeth Flores-Byrne, RN, NPStanford, CA 943051366496945
- Thea Hess, NPStanford, CA 943051124080502
- Miranda Kramer, RN, NPStanford, CA 943051821035122
- Kevin Letz, DNP, NPPalo Alto, CA 943051487617064
Common questions
What is Madeleine Oster, DNP, NP's NPI number?
Madeleine Oster, DNP, NP's National Provider Identifier (NPI) is 1023654084, issued on Nov 25, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Madeleine Oster, DNP, NP 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 Madeleine Oster, DNP, NP's license?
NPPES lists California license number 95013926, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Madeleine Oster, DNP, NP prescribe under Medicare Part D?
In 2024, Madeleine Oster, DNP, NP had 432 Medicare Part D claims for 120 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
What is Madeleine Oster, DNP, NP's MIPS final score?
The 2023 MIPS final score is 76.5 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.