BRENNA RAE NELSEN MD
NPI 1780260869
Anesthesiology in Stanford, CA
About Brenna Rae Nelsen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
BRENNA RAE NELSEN MD (NPI 1780260869) is an individual anesthesiology provider in Stanford, California, licensed in California (A181040) and active in the NPI registry since March 2021. She is enrolled in Medicare PECOS, maintains a secondary practice location in Oakland, and is a graduate of Harvard Medical School (2021).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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
Brenna Rae Nelsen Md 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
3Medicare enrollment records show Brenna Nelsen reassigns Medicare billing to 3 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
Burlingame, CA 94010
- Reassigned Medicare billing, California enrollment
- 115 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.
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 Brenna Nelsen's NPI number?
The NPI number for Brenna Nelsen is 1780260869. It was assigned to this individual provider in the NPPES registry on March 20, 2021.
Where is Brenna Nelsen located?
Brenna Nelsen practices at 300 Pasteur Dr, Stanford, CA 94305. The listed phone number is (650) 723-4000.
What is Brenna Nelsen's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Brenna Nelsen enrolled in Medicare?
Yes. Brenna Nelsen 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 Brenna Nelsen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Brenna Nelsen reassigns Medicare benefits to 3 organizations: Stanford Health Care (Stanford, CA), Lpch Medical Group Div Of Lucile (Palo Alto, CA) and Anesthesia Care Associates Medical Group Inc (Burlingame, 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 Brenna Nelsen'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 Brenna Nelsen was last updated on July 1, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.
# Brenna Rae Nelsen, MD · NPI 1780260869
Anesthesiology physician in Stanford, California. Individual provider, active in the CMS NPPES registry since March 20, 2021.
## Identity
- **NPI:** 1780260869 (Entity type: Individual)
- **Enumerated:** March 20, 2021
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** A181040 (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:** 3 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); Anesthesia Care Associates Medical Group Inc (NPI 1215985023, Burlingame, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Harvard Medical School, class of 2021
## Record status
- **NPPES last updated:** July 1, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1780260869) · Data from the CMS NPPES public registry.