LAKESIDE MEDICAL ORGANIZATION, A MEDICAL GROUP INC.
NPI 1831426642
Internal Medicine in West Hills, CA
About Lakeside Medical Organization, A Medical Group Inc. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LAKESIDE MEDICAL ORGANIZATION, A MEDICAL GROUP INC. (NPI 1831426642) is a healthcare organization registered as an internal medicine in West Hills, California and active in the NPI registry since November 2009. The organization holds a CLIA Waiver certificate valid through May 7, 2028 and lists Jessica Arce-gomez, Credentialing Supervisor, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 15
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)
Lakeside Medical Organization, A Medical Group Inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
204Medicare enrollment records show 204 clinicians reassign Medicare billing to Lakeside Medical Organization, A Medical Group Inc., which bills Medicare for the services they deliver. Of these, 34 practice within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 21
Nearest to this location (20)
See all 204Reseda, CA 91335
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 05D2304199
Lakeside Medical Organization, A Medical Group, In · West Hills, 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 Lakeside Medical Organization, A Medical Group Inc.'s NPI number?
The NPI number for Lakeside Medical Organization, A Medical Group Inc. is 1831426642. It was assigned to this organization in the NPPES registry on November 16, 2009.
Where is Lakeside Medical Organization, A Medical Group Inc. located?
Lakeside Medical Organization, A Medical Group Inc. is located at 8501 Fallbrook Ave Ste 300, West Hills, CA 91304. The listed phone number is (818) 654-3400.
What is Lakeside Medical Organization, A Medical Group Inc.'s specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Lakeside Medical Organization, A Medical Group Inc. enrolled in Medicare?
Yes. Lakeside Medical Organization, A Medical Group Inc. is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Lakeside Medical Organization, A Medical Group Inc.?
According to the CMS Revalidation Reassignment List (October 2026 release), 204 clinicians in 21 Medicare specialties reassign their Medicare billing to Lakeside Medical Organization, A 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 Nurse Practitioner (47), Family Practice (44) and Internal Medicine (43). Of these, 34 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Does Lakeside Medical Organization, A Medical Group Inc. hold a CLIA laboratory certificate?
Yes. A Certificate of Waiver (number 05D2304199) is associated with this NPI, valid through May 7, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.
When was this NPI record last updated?
The NPPES record for Lakeside Medical Organization, A Medical Group Inc. was last updated on September 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Lakeside Medical Organization, A Medical Group Inc. · NPI 1831426642
Internal Medicine organization in West Hills, California. Organization record, active in the CMS NPPES registry since November 16, 2009.
## Identity
- **NPI:** 1831426642 (Entity type: Organization)
- **Enumerated:** November 16, 2009
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **Organization subpart:** No
- **Authorized official:** Jessica Arce-Gomez, CREDENTIALING SUPERVISOR
## Practice location
- **Address:** 8501 FALLBROOK AVE STE 300, West Hills, CA 91304-3269
- **Phone:** (818) 654-3400 · **Fax:** (818) 933-0525
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 204 clinicians in 21 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (47), Family Practice (44), Internal Medicine (43); 34 practice within 10 miles; [full list](https://npiprofile.com/npi/1831426642/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 3, 2026
- **CLIA laboratory certificates:** 1 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1831426642) · Data from the CMS NPPES public registry.