MRS. MIREEN QUIZON DELOS SANTOS N.P.
NPI 1538404629
Nurse Practitioner - Family in San Francisco, CA
About Mrs. Mireen Quizon Delos Santos N.p. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. MIREEN QUIZON DELOS SANTOS N.P. (NPI 1538404629) is an individual family provider in San Francisco, California, licensed in California (23777) and active in the NPI registry since November 2012. She is enrolled in Medicare PECOS and maintains a secondary practice location in San Francisco.
NPPES Registry Identity
Specialties & Licenses
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 (PECOS)
Mrs. Mireen Quizon Delos Santos N.p. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Mireen Delos Santos reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Orinda, CA 94563
- Reassigned Medicare billing, California enrollment
- 4,479 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
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94107 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 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN FRANCISCO, CA 94107
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 Mireen Delos Santos's NPI number?
The NPI number for Mireen Delos Santos is 1538404629. It was assigned to this individual provider in the NPPES registry on November 30, 2012.
Where is Mireen Delos Santos located?
Mireen Delos Santos practices at 240 King St Ste G2, San Francisco, CA 94107. The listed phone number is (800) 972-5547.
What is Mireen Delos Santos's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Mireen Delos Santos enrolled in Medicare?
Yes. Mireen Delos Santos is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Mireen Delos Santos's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mireen Delos Santos reassigns Medicare benefits to Sutter Bay Medical Foundation (Orinda, CA). The 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 Mireen Delos Santos'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 Mireen Delos Santos was last updated on May 29, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Mrs. Mireen Quizon Delos Santos, N.P. · NPI 1538404629
Family physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since November 30, 2012.
## Identity
- **NPI:** 1538404629 (Entity type: Individual)
- **Enumerated:** November 30, 2012
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 23777 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 240 KING ST STE G2, San Francisco, CA 94107-1702
- **Phone:** (800) 972-5547
## 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:** Sutter Bay Medical Foundation (NPI 1366898538, Orinda, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 29, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1538404629) · Data from the CMS NPPES public registry.