WESTWOOD MEDICAL GROUP,INC.
NPI 1124104427
Internal Medicine - Rheumatology in Los Angeles, CA
About Westwood Medical Group,inc. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WESTWOOD MEDICAL GROUP,INC. (NPI 1124104427) is a healthcare organization registered as a rheumatology in Los Angeles, California and active in the NPI registry since October 2006. The organization holds a CLIA Waiver certificate valid through April 16, 2027 and lists Sonwoo Lee, Medical Director, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 2
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Westwood Medical Group,inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Revalidation Due Date
Revalidation due by November 30, 2026
Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.
Clinicians Billing Medicare Through This Organization
3Medicare enrollment records show 3 clinicians reassign Medicare billing to Westwood Medical Group,inc., which bills Medicare for the services they deliver. Of these, 2 practice at this address and 3 within 10 miles. They are listed nearest first.
Clinicians, nearest first (3)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
CLIA Laboratory Certificates CMS CLIA
Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.
Certificate of Waiver 05D1067350
Westwood Medical Group · Los Angeles, CAFrequently 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 Westwood Medical Group,inc.'s NPI number?
The NPI number for Westwood Medical Group,inc. is 1124104427. It was assigned to this organization in the NPPES registry on October 29, 2006.
Where is Westwood Medical Group,inc. located?
Westwood Medical Group,inc. is located at 505 S Virgil Ave Suite 208, Los Angeles, CA 90020. The listed phone number is (213) 739-0007.
What is Westwood Medical Group,inc.'s specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.
Is Westwood Medical Group,inc. enrolled in Medicare?
Yes. Westwood Medical Group,inc. is registered in the Medicare PECOS enrollment system.
When is Westwood Medical Group,inc.'s Medicare revalidation due?
According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (California, Clinic/Group Practice) is due for revalidation by November 30, 2026. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.
How many clinicians bill Medicare through Westwood Medical Group,inc.?
According to the CMS Revalidation Reassignment List (October 2026 release), 3 clinicians reassign their Medicare billing to Westwood Medical Group,inc., in Gastroenterology and Internal Medicine. 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. Of these, 2 practice at this address and 3 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Does Westwood Medical Group,inc. hold a CLIA laboratory certificate?
Yes. A Certificate of Waiver (number 05D1067350) is associated with this NPI, valid through April 16, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.
When was this NPI record last updated?
The NPPES record for Westwood Medical Group,inc. was last updated on May 20, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Westwood Medical Group,inc. · NPI 1124104427
Rheumatology organization in Los Angeles, California. Organization record, active in the CMS NPPES registry since October 29, 2006.
## Identity
- **NPI:** 1124104427 (Entity type: Organization)
- **Enumerated:** October 29, 2006
- **Primary specialty:** Internal Medicine - Rheumatology · taxonomy 207RR0500X
- **Organization subpart:** No
- **Authorized official:** Sonwoo Lee, MEDICAL DIRECTOR
## Practice location
- **Address:** 505 S VIRGIL AVE, SUITE 208, Los Angeles, CA 90020-1415
- **Phone:** (213) 739-0007 · **Fax:** (213) 739-0011
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** November 30, 2026 (Non-DME Part B, California, Clinic/Group Practice) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 3 clinicians in 2 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Internal Medicine (2), Gastroenterology (1); 2 practice at this address and 3 within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 20, 2014
- **CLIA laboratory certificates:** 1 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1124104427) · Data from the CMS NPPES public registry.