RUBY HSU
NPI 1013445667
Nurse Practitioner - Family in San Francisco, CA
About Ruby Hsu NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RUBY HSU (NPI 1013445667) is an individual family provider in San Francisco, California, licensed in California (95005942) and active in the NPI registry since May 2017. 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)
Ruby Hsu is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
5Medicare enrollment records show Ruby Hsu reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Francisco, CA 94122
- Reassigned Medicare billing, California enrollment
- 5,544 clinicians in this Medicare group
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
- 2,112 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 761 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 1,159 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 94117 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 94117
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 Ruby Hsu's NPI number?
The NPI number for Ruby Hsu is 1013445667. It was assigned to this individual provider in the NPPES registry on May 26, 2017.
Where is Ruby Hsu located?
Ruby Hsu practices at 450 Stanyan St Fl 6, San Francisco, CA 94117. The listed phone number is (415) 680-4135.
What is Ruby Hsu's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Ruby Hsu enrolled in Medicare?
Yes. Ruby Hsu is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Ruby Hsu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ruby Hsu reassigns Medicare benefits to 5 organizations: Ucsf Medical Group Business Services (San Francisco, CA), University Of California San Francisco (San Francisco, CA), Regents Of The University Of California (San Francisco, CA), Ucsf Dept Of Surgery (San Francisco, CA) and Ucsf Pediatrics Associates (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 Ruby Hsu'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 Ruby Hsu was last updated on May 26, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Ruby Hsu · NPI 1013445667
Family physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since May 26, 2017.
## Identity
- **NPI:** 1013445667 (Entity type: Individual)
- **Enumerated:** May 26, 2017
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 95005942 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 450 STANYAN ST FL 6, San Francisco, CA 94117-1019
- **Phone:** (415) 680-4135
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Ucsf Medical Group Business Services (NPI 1477624104, San Francisco, CA); University Of California San Francisco (NPI 1164512851, San Francisco, CA); Regents Of The University Of California (NPI 1376613943, San Francisco, CA); Ucsf Dept Of Surgery (NPI 1477627537, San Francisco, CA); Ucsf Pediatrics Associates (NPI 1376614016, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 26, 2017
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Source: [NPI Profile](https://npiprofile.com/npi/1013445667) · Data from the CMS NPPES public registry.