MADELEINE OSTER DNP, NP
NPI 1023654084
Nurse Practitioner in Stanford, CA
About Madeleine Oster Dnp, Np NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MADELEINE OSTER DNP, NP (NPI 1023654084) is an individual nurse practitioner in Stanford, California, licensed in California (95013926) and active in the NPI registry since November 2019. She is enrolled in Medicare PECOS and is a graduate of University Of Alabama School Of Medicine (2019).
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Madeleine Oster Dnp, Np is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Madeleine Oster reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Stanford, CA 94305
- Reassigned Medicare billing, California enrollment
- 4,258 clinicians in this Medicare group
Palo Alto, CA 94304
- Reassigned Medicare billing, California enrollment
- 3,617 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 11
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94305 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
STANFORD, CA 94305
STANFORD, CA 94305
STANFORD, CA 94305
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Madeleine Oster's NPI number?
The NPI number for Madeleine Oster is 1023654084. It was assigned to this individual provider in the NPPES registry on November 25, 2019.
Where is Madeleine Oster located?
Madeleine Oster practices at 300 Pasteur Dr, Stanford, CA 94305. The listed phone number is (650) 723-4000.
What is Madeleine Oster's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Madeleine Oster enrolled in Medicare?
Yes. Madeleine Oster is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Madeleine Oster's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Madeleine Oster reassigns Medicare benefits to 2 organizations: Stanford Health Care (Stanford, CA) and Lpch Medical Group Div Of Lucile (Palo Alto, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Madeleine Oster's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Madeleine Oster was last updated on December 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Madeleine Oster, DNP, NP · NPI 1023654084
Nurse Practitioner physician in Stanford, California. Individual provider, active in the CMS NPPES registry since November 25, 2019.
## Identity
- **NPI:** 1023654084 (Entity type: Individual)
- **Enumerated:** November 25, 2019
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** 95013926 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 PASTEUR DR, Stanford, CA 94305-2200
- **Phone:** (650) 723-4000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Stanford Health Care (NPI 1437292927, Stanford, CA); Lpch Medical Group Div Of Lucile (NPI 1417907940, Palo Alto, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Alabama School Of Medicine, class of 2019
## Record status
- **NPPES last updated:** December 30, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1023654084) · Data from the CMS NPPES public registry.