RUTH RUBIN, MD, MPH, A PROFESSIONAL CORPORATION
NPI 1275997660
Internal Medicine in San Rafael, CA
About Ruth Rubin, Md, Mph, A Professional Corporation NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RUTH RUBIN, MD, MPH, A PROFESSIONAL CORPORATION (NPI 1275997660) is a healthcare organization registered as an internal medicine in San Rafael, California and active in the NPI registry since April 2016. The organization lists Ruth Rubin, Chief Executive Officer, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
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)
Ruth Rubin, Md, Mph, A Professional Corporation is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to Ruth Rubin, MD, Mph, A Professional Corporation, which bills Medicare for the services this clinician delivers.
Clinician (1)
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 Ruth Rubin, MD, Mph, A Professional Corporation's NPI number?
The NPI number for Ruth Rubin, MD, Mph, A Professional Corporation is 1275997660. It was assigned to this organization in the NPPES registry on April 12, 2016.
Where is Ruth Rubin, MD, Mph, A Professional Corporation located?
Ruth Rubin, MD, Mph, A Professional Corporation is located at 1050 Northgate Dr Suite 100, San Rafael, CA 94903. The listed phone number is (415) 785-4246.
What is Ruth Rubin, MD, Mph, A Professional Corporation's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Ruth Rubin, MD, Mph, A Professional Corporation enrolled in Medicare?
Yes. Ruth Rubin, MD, Mph, A Professional Corporation is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Ruth Rubin, MD, Mph, A Professional Corporation?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Ruth Rubin, MD, Mph, A Professional Corporation. 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Ruth Rubin, MD, Mph, A Professional Corporation was last updated on April 13, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Ruth Rubin, Md, Mph, A Professional Corporation · NPI 1275997660
Internal Medicine organization in San Rafael, California. Organization record, active in the CMS NPPES registry since April 12, 2016.
## Identity
- **NPI:** 1275997660 (Entity type: Organization)
- **Enumerated:** April 12, 2016
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **Organization subpart:** No
- **Authorized official:** Ruth Rubin, CHIEF EXECUTIVE OFFICER
## Practice location
- **Address:** 1050 NORTHGATE DR, SUITE 100, San Rafael, CA 94903-2526
- **Phone:** (415) 785-4246 · **Fax:** (415) 491-1411
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Internal Medicine) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 13, 2016
---
Source: [NPI Profile](https://npiprofile.com/npi/1275997660) · Data from the CMS NPPES public registry.