Maryanne E. Christoforou, RN MS
Registered Nurse · San Francisco, CA
Maryanne E. Christoforou, RN MS is a registered nurse with a practice address in San Francisco, California, and NPI 1235165762, issued on Jun 25, 2006. Check the license (California 569366, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Maryanne E. Christoforou
- Credential
- RN MS
- Primary taxonomy
- Registered Nurse 163W00000X
- License number
- 569366 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1600 Divisadero St, San Francisco, CA 94115
- Phone
- (415) 353-7128
- Enumerated
- Jun 25, 2006
- Record last updated
- Sep 4, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (415) 353-7093
- Medicaid ID
- 005693660 CA
- Entity
- Type 1 · individual
8 nearest registered nurse records → All 13,506 in California → Look up another NPI →
Also registered at 1600 Divisadero St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Maryanne E. Christoforou in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 569366Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
63% fewer Medicare Part D claims than the average registered nurse in 2024
254 Medicare Part D claims for 57 beneficiaries, against an average of 678 among the 694 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims.
Most prescribed
- Levothyroxine Sodium38 claims
- Tamsulosin Hcl27 claims
- Gabapentin23 claims
- Orgovyx21 claims
- Prednisone18 claims
- Abiraterone Acetate13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 74.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Maryanne E. Christoforou among 13,506 registered nurse records in California
Maryanne E. Christoforou, RN MS is one of 13,506 registered nurse records with a practice address in California. 3% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than under 1% of them.
- NPI issued2006 · under 1% of these records are older, 97% newer
- In a Medicare fileYes · 3% of these records are
- In the CMS Doctors and Clinicians fileNo · 1% of these records are
- Record last updated2008 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 163W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
625 registered nurse records list a practice address in San Francisco
They are 625 of the 38,143 NPPES records with a practice address in San Francisco, and 13,506 registered nurse records in California.
All 13,506 in California → Every provider in San Francisco → Registered Nurse nationwide →
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Common questions
What is Maryanne E. Christoforou, RN MS's NPI number?
Maryanne E. Christoforou, RN MS's National Provider Identifier (NPI) is 1235165762, issued on Jun 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Maryanne E. Christoforou, RN MS located?
The NPPES record lists a practice address at 1600 Divisadero St, San Francisco, CA, 94115. Phone: (415) 353-7128. Providers update this record themselves, so call before visiting.
How can I verify Maryanne E. Christoforou, RN MS's license?
NPPES lists California license number 569366, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Maryanne E. Christoforou, RN MS prescribe under Medicare Part D?
In 2024, Maryanne E. Christoforou, RN MS had 254 Medicare Part D claims for 57 beneficiaries; the average among registered nurse prescribers was 678. Part D covers Medicare prescriptions only.
What is Maryanne E. Christoforou, RN MS's MIPS final score?
The 2023 MIPS final score is 74.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.