WESTON WYNNE ERNST NP
NPI 1790399574
Nurse Practitioner - Acute Care in San Francisco, CA
About Weston Wynne Ernst Np NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WESTON WYNNE ERNST NP (NPI 1790399574) is an individual acute care provider in San Francisco, California, licensed in California (95015311) and active in the NPI registry since August 2020. He 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)
Weston Wynne Ernst Np is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
4Medicare enrollment records show Weston Ernst reassigns Medicare billing to 4 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
- 723 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 5,645 clinicians in this Medicare group
San Francisco, CA 94122
- Reassigned Medicare billing, California enrollment
- 5,544 clinicians in this Medicare group
San Francisco, CA 94117
- Reassigned Medicare billing, California enrollment
- 132 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 3
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 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.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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 Weston Ernst's NPI number?
The NPI number for Weston Ernst is 1790399574. It was assigned to this individual provider in the NPPES registry on August 31, 2020.
Where is Weston Ernst located?
Weston Ernst practices at 505 Parnassus Ave, San Francisco, CA 94143. The listed phone number is (415) 353-1007.
What is Weston Ernst's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Acute Care, with taxonomy code 363LA2100X.
Is Weston Ernst enrolled in Medicare?
Yes. Weston Ernst is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Weston Ernst's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Weston Ernst reassigns Medicare benefits to 4 organizations: University Anesthesia Medical Group (San Francisco, CA), University Of California San Francisco (San Francisco, CA), Ucsf Medical Group Business Services (San Francisco, CA) and Sutter Bay Hospitals (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 Weston Ernst'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 Weston Ernst was last updated on July 28, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Weston Wynne Ernst, NP · NPI 1790399574
Acute Care physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since August 31, 2020.
## Identity
- **NPI:** 1790399574 (Entity type: Individual)
- **Enumerated:** August 31, 2020
- **Primary specialty:** Nurse Practitioner - Acute Care · taxonomy 363LA2100X
- **State license:** 95015311 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 505 PARNASSUS AVE, San Francisco, CA 94143-2204
- **Phone:** (415) 353-1007
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): University Anesthesia Medical Group (NPI 1528137296, San Francisco, CA); University Of California San Francisco (NPI 1346329380, San Francisco, CA); Ucsf Medical Group Business Services (NPI 1477624104, San Francisco, CA); Sutter Bay Hospitals (NPI 1659439834, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 28, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1790399574) · Data from the CMS NPPES public registry.