SARA MARXMILLER NP
NPI 1871904326
Nurse Practitioner - Adult Health in San Francisco, CA
About Sara Marxmiller Np NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SARA MARXMILLER NP (NPI 1871904326) is an individual adult health provider in San Francisco, California, licensed in California (734243) and active in the NPI registry since May 2014. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Sara Marxmiller Np is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Sara Marxmiller reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Francisco, CA 94115
- Reassigned Medicare billing, California enrollment
- 1,573 clinicians in this Medicare group
San Francisco, CA 94110
- Reassigned Medicare billing, California enrollment
- 336 clinicians in this Medicare group
Sausalito, CA 94965
- Reassigned Medicare billing, California enrollment
- 7 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94115 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.
SAN FRANCISCO, CA 94115
SAN FRANCISCO, CA 94115
SAN FRANCISCO, CA 94115
SAN FRANCISCO, CA 94115
SAN FRANCISCO, CA 94115
SAN FRANCISCO, CA 94115
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 Sara Marxmiller's NPI number?
The NPI number for Sara Marxmiller is 1871904326. It was assigned to this individual provider in the NPPES registry on May 17, 2014.
Where is Sara Marxmiller located?
Sara Marxmiller practices at 2100 Webster St Suite 505, San Francisco, CA 94115. The listed phone number is (415) 923-3377.
What is Sara Marxmiller's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Adult Health, with taxonomy code 363LA2200X.
Is Sara Marxmiller enrolled in Medicare?
Yes. Sara Marxmiller is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Sara Marxmiller's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sara Marxmiller reassigns Medicare benefits to 3 organizations: City & County Of San Francisco (San Francisco, CA), University Of California Sfgh Medical Group (San Francisco, CA) and Southern Marin Dermatology, Inc. (Sausalito, 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 Sara Marxmiller'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 Sara Marxmiller was last updated on November 6, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 years 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.
# Sara Marxmiller, NP · NPI 1871904326
Adult Health physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since May 17, 2014.
## Identity
- **NPI:** 1871904326 (Entity type: Individual)
- **Enumerated:** May 17, 2014
- **Primary specialty:** Nurse Practitioner - Adult Health · taxonomy 363LA2200X
- **State license:** 734243 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 2100 WEBSTER ST, SUITE 505, San Francisco, CA 94115-2373
- **Phone:** (415) 923-3377
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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): City & County Of San Francisco (NPI 1932140795, San Francisco, CA); University Of California Sfgh Medical Group (NPI 1063487122, San Francisco, CA); Southern Marin Dermatology, Inc. (NPI 1487090924, Sausalito, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** November 6, 2015
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Source: [NPI Profile](https://npiprofile.com/npi/1871904326) · Data from the CMS NPPES public registry.