SIERRA MEDICAL GROUP
NPI 1780832972
Clinic/Center - Multi-Specialty in Lancaster, CA
About Sierra Medical Group NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SIERRA MEDICAL GROUP (NPI 1780832972) is a healthcare organization registered as a multi-specialty in Lancaster, California and active in the NPI registry since September 2008. The organization lists Charles Lim, Medical Director, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 8
Other Names 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)
Sierra Medical Group is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
13Medicare enrollment records show 13 clinicians reassign Medicare billing to Sierra Medical Group, which bills Medicare for the services they deliver. Of these, 2 practice at this address and 6 within 10 miles. They are listed nearest first.
Clinicians by Medicare Specialty 5
Clinicians, nearest first (13)
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 Sierra Medical Group Holding Company, Inc.'s NPI number?
The NPI number for Sierra Medical Group Holding Company, Inc. is 1780832972. It was assigned to this organization in the NPPES registry on September 3, 2008. The provider is doing business as Sierra Medical Group.
Where is Sierra Medical Group Holding Company, Inc. located?
Sierra Medical Group Holding Company, Inc. is located at 44469 10th St W, Lancaster, CA 93534. The listed phone number is (818) 654-3463.
What is Sierra Medical Group Holding Company, Inc.'s specialty?
The primary specialty registered for this NPI is Clinic/Center, specializing in Multi-Specialty, with taxonomy code 261QM1300X.
Is Sierra Medical Group Holding Company, Inc. enrolled in Medicare?
Yes. Sierra Medical Group Holding Company, Inc. is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Sierra Medical Group Holding Company, Inc.?
According to the CMS Revalidation Reassignment List (October 2026 release), 13 clinicians in 5 Medicare specialties reassign their Medicare billing to Sierra Medical Group Holding Company, 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 Internal Medicine (4), Family Practice (3) and General Practice (3). Of these, 2 practice at this address and 6 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 Sierra Medical Group Holding Company, Inc. was last updated on November 18, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.
# Sierra Medical Group · NPI 1780832972
Multi-Specialty organization in Lancaster, California. Organization record, active in the CMS NPPES registry since September 3, 2008.
## Identity
- **NPI:** 1780832972 (Entity type: Organization)
- **Enumerated:** September 3, 2008
- **Primary specialty:** Clinic/Center - Multi-Specialty · taxonomy 261QM1300X
- **Legal business name:** Sierra Medical Group Holding Company, Inc.
- **Organization subpart:** No
- **Authorized official:** Charles Lim, MEDICAL DIRECTOR
## Practice location
- **Address:** 44469 10TH ST W, Lancaster, CA 93534-3324
- **Phone:** (818) 654-3463 · **Fax:** (818) 654-3460
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 13 clinicians in 5 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Internal Medicine (4), Family Practice (3), General Practice (3); 2 practice at this address and 6 within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** November 18, 2009
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Source: [NPI Profile](https://npiprofile.com/npi/1780832972) · Data from the CMS NPPES public registry.