REGENTS OF THE UNIVERSITY OF CALIFORNIA
NPI 1235322348
Internal Medicine - Endocrinology, Diabetes & Metabolism in San Francisco, CA
About Regents Of The University Of California NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
REGENTS OF THE UNIVERSITY OF CALIFORNIA (NPI 1235322348), doing business as Ucsf Department Of Medicine, is a healthcare organization registered as an endocrinology, diabetes & metabolism in San Francisco, California and active in the NPI registry since August 2007. The organization lists David Rein, Coo, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Other Identifiers 1
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Regents Of The University Of California is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
2,103Medicare enrollment records show 2,103 clinicians reassign Medicare billing to Regents Of The University Of California, which bills Medicare for the services they deliver. Of these, 43 practice at this address and 1,385 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 54
Nearest to this location (20)
See all 2,103San Francisco, CA 94115
San Francisco, CA 94143
San Francisco, CA 94115
San Francisco, CA 94115
San Francisco, CA 94143
San Francisco, CA 94115
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Regents Of The University Of California's NPI number?
The NPI number for Regents Of The University Of California is 1235322348. It was assigned to this organization in the NPPES registry on August 22, 2007. The provider is doing business as UCSF Department of Medicine.
Where is Regents Of The University Of California located?
Regents Of The University Of California is located at 1600 Divisadero St, San Francisco, CA 94143. The listed phone number is (415) 353-9720.
What is Regents Of The University Of California's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.
Is Regents Of The University Of California enrolled in Medicare?
Yes. Regents Of The University Of California is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Regents Of The University Of California?
According to the CMS Revalidation Reassignment List (October 2026 release), 2,103 clinicians in 54 Medicare specialties reassign their Medicare billing to Regents Of The University Of California. A 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 the clinician's services. The largest specialties are Nurse Practitioner (558), Internal Medicine (330) and Hospitalist (234). Of these, 43 practice at this address and 1,385 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Regents Of The University Of California was last updated on April 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 months 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.
# Regents Of The University Of California · NPI 1235322348
Endocrinology, Diabetes & Metabolism organization in San Francisco, California. Organization record, active in the CMS NPPES registry since August 22, 2007.
## Identity
- **NPI:** 1235322348 (Entity type: Organization)
- **Enumerated:** August 22, 2007
- **Primary specialty:** Internal Medicine - Endocrinology, Diabetes & Metabolism · taxonomy 207RE0101X
- **Also known as:** UCSF Department of Medicine (Doing Business As)
- **Organization subpart:** Yes (part of Ucsf Medical Center)
- **Authorized official:** David Rein, COO
## Practice location
- **Address:** 1600 DIVISADERO ST, San Francisco, CA 94143-0120
- **Phone:** (415) 353-9720
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 2,103 clinicians in 54 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (558), Internal Medicine (330), Hospitalist (234); 43 practice at this address and 1,385 within 10 miles; [full list](https://npiprofile.com/npi/1235322348/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 16, 2025
- **Other identifiers:** Medicaid GR0084563 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1235322348) · Data from the CMS NPPES public registry.