WESTERN SIERRA EMERGENCY PHYSICIANS MEDICAL GROUP INC
NPI 1881995272
Emergency Medicine in Lake Arrowhead, CA
About Western Sierra Emergency Physicians Medical Group Inc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WESTERN SIERRA EMERGENCY PHYSICIANS MEDICAL GROUP INC (NPI 1881995272) is a healthcare organization registered as an emergency medicine in Lake Arrowhead, California and active in the NPI registry since November 2010. The organization lists Steven P. Maron, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
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)
Western Sierra Emergency Physicians Medical Group Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
34Medicare enrollment records show 34 clinicians reassign Medicare billing to Western Sierra Emergency Physicians Medical Group Inc, which bills Medicare for the services they deliver. Of these, 1 practice within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 4
Nearest to this location (20)
See all 34Loma Linda, CA 92354
Loma Linda, CA 92354
Los Angeles, CA 90015
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 Western Sierra Emergency Physicians Medical Group Inc's NPI number?
The NPI number for Western Sierra Emergency Physicians Medical Group Inc is 1881995272. It was assigned to this organization in the NPPES registry on November 16, 2010.
Where is Western Sierra Emergency Physicians Medical Group Inc located?
Western Sierra Emergency Physicians Medical Group Inc is located at 29100 Hospital Road, Lake Arrowhead, CA 92352. The listed phone number is (855) 687-0618.
What is Western Sierra Emergency Physicians Medical Group Inc's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Western Sierra Emergency Physicians Medical Group Inc enrolled in Medicare?
Yes. Western Sierra Emergency Physicians Medical Group Inc is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Western Sierra Emergency Physicians Medical Group Inc?
According to the CMS Revalidation Reassignment List (October 2026 release), 34 clinicians in 4 Medicare specialties reassign their Medicare billing to Western Sierra Emergency Physicians Medical Group Inc. 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 Emergency Medicine (28), Family Practice (3) and Internal Medicine (2). Of these, 1 practice 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 Western Sierra Emergency Physicians Medical Group Inc was last updated on April 6, 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.
# Western Sierra Emergency Physicians Medical Group Inc · NPI 1881995272
Emergency Medicine organization in Lake Arrowhead, California. Organization record, active in the CMS NPPES registry since November 16, 2010.
## Identity
- **NPI:** 1881995272 (Entity type: Organization)
- **Enumerated:** November 16, 2010
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **Organization subpart:** No
- **Authorized official:** Steven Maron, PRESIDENT
## Practice location
- **Address:** 29100 HOSPITAL ROAD, Lake Arrowhead, CA 92352-9706
- **Phone:** (855) 687-0618
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 34 clinicians in 4 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Emergency Medicine (28), Family Practice (3), Internal Medicine (2); 1 practice within 10 miles; [full list](https://npiprofile.com/npi/1881995272/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 6, 2022
- **Other identifiers:** Medicaid 1881995272 (CA)
---
Source: [NPI Profile](https://npiprofile.com/npi/1881995272) · Data from the CMS NPPES public registry.