GRACE ERIN OPPENHEIM NP
NPI 1013355411
Nurse Practitioner in Stanford, CA
About Grace Erin Oppenheim Np NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GRACE ERIN OPPENHEIM NP (NPI 1013355411) is an individual nurse practitioner in Stanford, California, licensed in California (95032250) and active in the NPI registry since June 2013. She is enrolled in Medicare PECOS, maintains a secondary practice location in Redmond, and is a graduate of Other (2012).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 1
Accepted Insurance
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
Grace Erin Oppenheim 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
4Medicare enrollment records show Grace Oppenheim reassigns Medicare billing to 4 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
Mill Creek, WA 98012
- Reassigned Medicare billing, Washington enrollment
- 705 clinicians in this Medicare group
Everett, WA 98201
- Reassigned Medicare billing, Washington enrollment
- 95 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 2
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.
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 Grace Oppenheim's NPI number?
The NPI number for Grace Oppenheim is 1013355411. It was assigned to this individual provider in the NPPES registry on June 6, 2013.
Where is Grace Oppenheim located?
Grace Oppenheim practices at 300 Pasteur Dr, Stanford, CA 94305. The listed phone number is (650) 723-4000.
What is Grace Oppenheim's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Grace Oppenheim enrolled in Medicare?
Yes. Grace Oppenheim 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 Grace Oppenheim's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Grace Oppenheim reassigns Medicare benefits to 4 organizations: Stanford Health Care (Stanford, CA), Lpch Medical Group Div Of Lucile (Palo Alto, CA), Providence Health & Services- Washington (Mill Creek, WA) and North Sound Emergency Medicine PC (Everett, WA). 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 Grace Oppenheim's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Grace Oppenheim accept?
Health plans from Premera Blue Cross Blue Shield of Alaska list Grace Oppenheim as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Grace Oppenheim was last updated on September 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Grace Erin Oppenheim, NP · NPI 1013355411
Nurse Practitioner physician in Stanford, California. Individual provider, active in the CMS NPPES registry since June 6, 2013.
## Identity
- **NPI:** 1013355411 (Entity type: Individual)
- **Enumerated:** June 6, 2013
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** 95032250 (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:** 4 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); Providence Health & Services- Washington (NPI 1790014504, Mill Creek, WA); North Sound Emergency Medicine PC (NPI 1114937919, Everett, WA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2012
## Record status
- **NPPES last updated:** September 19, 2025
- **Other identifiers:** Medicaid 102878949 (PA)
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Source: [NPI Profile](https://npiprofile.com/npi/1013355411) · Data from the CMS NPPES public registry.