LINNEA NIERENBERG
NPI 1114506185
Emergency Medicine in Sacramento, CA
About Linnea Nierenberg NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LINNEA NIERENBERG (NPI 1114506185) is an individual emergency medicine provider in Sacramento, California, licensed in California (A194423) and active in the NPI registry since April 2021. She is enrolled in Medicare PECOS and is a graduate of Other (2021).
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 and accepts Medicare assignment
Linnea Nierenberg is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Linnea Nierenberg reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Sacramento, CA 95817
- Reassigned Medicare billing, California enrollment
- 2,570 clinicians in this Medicare group
Sacramento, CA 95817
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Regents Of The University Of California
- 918 clinicians in this Medicare group
Stockton, CA 95210
- Reassigned Medicare billing, California enrollment
- 20,078 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 95817 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.
SACRAMENTO, CA 95817
SACRAMENTO, CA 95817
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 Linnea Nierenberg's NPI number?
The NPI number for Linnea Nierenberg is 1114506185. It was assigned to this individual provider in the NPPES registry on April 6, 2021.
Where is Linnea Nierenberg located?
Linnea Nierenberg practices at 4301 X St, Sacramento, CA 95817. The listed phone number is (650) 723-6576.
What is Linnea Nierenberg's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Linnea Nierenberg enrolled in Medicare?
Yes. Linnea Nierenberg is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Linnea Nierenberg's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Linnea Nierenberg reassigns Medicare benefits to 3 organizations: Regents Of The Univ Of Ca (Sacramento, CA), Regents Of The University Of Ca (Sacramento, CA) and Permanente Medical Group Inc (Stockton, 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 Linnea Nierenberg'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 Linnea Nierenberg was last updated on August 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.
# Linnea Nierenberg · NPI 1114506185
Emergency Medicine physician in Sacramento, California. Individual provider, active in the CMS NPPES registry since April 6, 2021.
## Identity
- **NPI:** 1114506185 (Entity type: Individual)
- **Enumerated:** April 6, 2021
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** A194423 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 4301 X ST, Sacramento, CA 95817-2214
- **Phone:** (650) 723-6576
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Regents Of The Univ Of Ca (NPI 1013906973, Sacramento, CA); Regents Of The University Of Ca (NPI 1992930986, Sacramento, CA); Permanente Medical Group Inc (NPI 1548343510, Stockton, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2021
## Record status
- **NPPES last updated:** August 4, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1114506185) · Data from the CMS NPPES public registry.