MS. MARYANNE E. CHRISTOFOROU RN MS
NPI 1235165762
Registered Nurse in San Francisco, CA
About Ms. Maryanne E. Christoforou Rn Ms NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. MARYANNE E. CHRISTOFOROU RN MS (NPI 1235165762) is an individual registered nurse in San Francisco, California, licensed in California (569366) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Ms. Maryanne E. Christoforou Rn Ms is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Maryanne Christoforou 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 94143
- Reassigned Medicare billing, California enrollment
- 2,112 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 5,645 clinicians in this Medicare group
San Francisco, CA 94122
- Reassigned Medicare billing, California enrollment
- 5,544 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.
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.
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 Maryanne Christoforou's NPI number?
The NPI number for Maryanne Christoforou is 1235165762. It was assigned to this individual provider in the NPPES registry on June 25, 2006. The provider is also known as Ms. Maryanne Hall-Purgat Rn Ms.
Where is Maryanne Christoforou located?
Maryanne Christoforou practices at 1600 Divisadero St, San Francisco, CA 94115. The listed phone number is (415) 353-7128.
What is Maryanne Christoforou's specialty?
The primary specialty registered for this NPI is Registered Nurse with taxonomy code 163W00000X.
Is Maryanne Christoforou enrolled in Medicare?
Yes. Maryanne Christoforou is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Maryanne Christoforou's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Maryanne Christoforou reassigns Medicare benefits to 3 organizations: Regents Of The University Of California (San Francisco, CA), University Of California San Francisco (San Francisco, CA) and Ucsf Medical Group Business Services (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 Maryanne Christoforou'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 Maryanne Christoforou was last updated on September 4, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Ms. Maryanne E. Christoforou, RN MS · NPI 1235165762
Registered Nurse provider in San Francisco, California. Individual provider, active in the CMS NPPES registry since June 25, 2006.
## Identity
- **NPI:** 1235165762 (Entity type: Individual)
- **Enumerated:** June 25, 2006
- **Primary specialty:** Registered Nurse · taxonomy 163W00000X
- **State license:** 569366 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1600 DIVISADERO ST, San Francisco, CA 94115-3010
- **Phone:** (415) 353-7128 · **Fax:** (415) 353-7093
## 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): Regents Of The University Of California (NPI 1235322348, San Francisco, CA); University Of California San Francisco (NPI 1346329380, San Francisco, CA); Ucsf Medical Group Business Services (NPI 1477624104, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 4, 2008
- **Other identifiers:** Medicare PIN 005693660 (CA); Medicare UPIN Q43676 (CA); Medicaid 005693660 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1235165762) · Data from the CMS NPPES public registry.