DR. ERNEST J. RING MD
NPI 1184688434
Radiology - Vascular & Interventional Radiology in San Francisco, CA
About Dr. Ernest J. Ring Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ERNEST J. RING MD (NPI 1184688434) is an individual vascular & interventional radiology provider in San Francisco, California, licensed in California (C40234) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Ernest J. Ring Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Ernest Ring reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 5,645 clinicians in this Medicare group
San Francisco, CA 94110
- Reassigned Medicare billing, California enrollment
- 336 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 94143 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN FRANCISCO, CA 94143
SAN FRANCISCO, CA 94143
SAN FRANCISCO, CA 94143
SAN FRANCISCO, CA 94143
SAN FRANCISCO, CA 94143
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 Ernest Ring's NPI number?
The NPI number for Ernest Ring is 1184688434. It was assigned to this individual provider in the NPPES registry on April 13, 2006.
Where is Ernest Ring located?
Ernest Ring practices at 505 Parnassus Ave, San Francisco, CA 94143. The listed phone number is (415) 353-2760.
What is Ernest Ring's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Vascular & Interventional Radiology, with taxonomy code 2085R0204X.
Is Ernest Ring enrolled in Medicare?
Yes. Ernest Ring is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Ernest Ring's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ernest Ring reassigns Medicare benefits to 2 organizations: University Of California San Francisco (San Francisco, CA) and University Of California Sfgh Medical Group (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 Ernest Ring'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 Ernest Ring was last updated on August 3, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.
# Dr. Ernest J. Ring, MD · NPI 1184688434
Vascular & Interventional Radiology physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since April 13, 2006.
## Identity
- **NPI:** 1184688434 (Entity type: Individual)
- **Enumerated:** April 13, 2006
- **Primary specialty:** Radiology - Vascular & Interventional Radiology · taxonomy 2085R0204X
- **State license:** C40234 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 505 PARNASSUS AVE, San Francisco, CA 94143-2204
- **Phone:** (415) 353-2760 · **Fax:** (415) 353-2765
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): University Of California San Francisco (NPI 1346329380, San Francisco, CA); University Of California Sfgh Medical Group (NPI 1063487122, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 3, 2012
- **Other identifiers:** Medicare UPIN A37337 (CA); Medicare PIN 00C402340 (CA); Medicaid 00C402340 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1184688434) · Data from the CMS NPPES public registry.