ANNE-MARIE LARSON NP
NPI 1881804888
Nurse Practitioner - Gerontology in San Francisco, CA
About Anne-marie Larson Np NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ANNE-MARIE LARSON NP (NPI 1881804888) is an individual gerontology provider in San Francisco, California, licensed in California (604572) and active in the NPI registry since May 2007. 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)
Anne-marie Larson Np is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Anne-marie Larson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 5,645 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 723 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
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 Anne-marie Larson's NPI number?
The NPI number for Anne-marie Larson is 1881804888. It was assigned to this individual provider in the NPPES registry on May 22, 2007.
Where is Anne-marie Larson located?
Anne-marie Larson practices at 1600 Divisadero St, San Francisco, CA 94115. The listed phone number is (415) 353-7764.
What is Anne-marie Larson's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Gerontology, with taxonomy code 363LG0600X.
Is Anne-marie Larson enrolled in Medicare?
Yes. Anne-marie Larson is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Anne-marie Larson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Anne-marie Larson reassigns Medicare benefits to 2 organizations: University Of California San Francisco (San Francisco, CA) and University Anesthesia Medical Group (San Francisco, 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 Anne-marie Larson'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 Anne-marie Larson was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Anne-Marie Larson, NP · NPI 1881804888
Gerontology physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since May 22, 2007.
## Identity
- **NPI:** 1881804888 (Entity type: Individual)
- **Enumerated:** May 22, 2007
- **Primary specialty:** Nurse Practitioner - Gerontology · taxonomy 363LG0600X
- **State license:** 604572 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1600 DIVISADERO ST, San Francisco, CA 94115-3010
- **Phone:** (415) 353-7764
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): University Of California San Francisco (NPI 1346329380, San Francisco, CA); University Anesthesia Medical Group (NPI 1528137296, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 8, 2007
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Source: [NPI Profile](https://npiprofile.com/npi/1881804888) · Data from the CMS NPPES public registry.