Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

LAKESIDE MEDICAL ORGANIZATION, A MEDICAL GROUP INC.
NPI 1831426642
Internal Medicine in West Hills, CA

Q: 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.

Active since November 16, 2009CLIA 05D2304199 · Waiver

8501 FALLBROOK AVE STE 300, WEST HILLS, CA 91304(818) 654-3400(818) 933-0525 Get Directions Write a Review

NPPES record last updated: September 3, 2026. Verified against the NPPES registry weekly; last sync: September 20, 2026.

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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

NPI1831426642

Entity TypeOrganization

Primary Taxonomy207R00000X

Legal Business NameLAKESIDE MEDICAL ORGANIZATION, A MEDICAL GROUP INC.

Location Address8501 FALLBROOK AVE STE 300West Hills, CA 91304-3269

Mailing Address8501 Fallbrook Ave Ste 300West Hills, CA 91304-3269 · (818) 654-3400 · Fax (818) 933-0525

Phone(818) 654-3400

Fax(818) 933-0525

Organization SubpartNo

Authorized OfficialJessica Arce-gomezCredentialing Supervisor · (818) 654-3400

Enumeration DateNovember 16, 2009

Last NPPES UpdateSeptember 3, 2026

NPPES CertifiedSeptember 3, 2026

✔ NPI 1831426642 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 15

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Also ListedDermatologyTaxonomy 207N00000X

Also ListedFamily MedicineTaxonomy 207Q00000X

Also ListedInternal Medicine · Cardiovascular DiseaseTaxonomy 207RC0000X

Also ListedInternal Medicine · Endocrinology, Diabetes & MetabolismTaxonomy 207RE0101X

Also ListedInternal Medicine · GastroenterologyTaxonomy 207RG0100X

Also ListedInternal Medicine · RheumatologyTaxonomy 207RR0500X

Also ListedObstetrics & GynecologyTaxonomy 207V00000X

Also ListedPediatricsTaxonomy 208000000X

Also ListedPhysical Medicine & RehabilitationTaxonomy 208100000X

Also ListedRadiology · Body ImagingTaxonomy 2085B0100X

Also ListedSurgeryTaxonomy 208600000X

Also ListedUrologyTaxonomy 208800000X

Also ListedPodiatristTaxonomy 213E00000X

Also ListedClinic/Center · Urgent CareTaxonomy 261QU0200X

8501 FALLBROOK AVE STE 300, West Hills, CA 91304

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Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

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, CA

Active · expires May 7, 2028

CLIA Number05D2304199

Laboratory TypePhysician Office

Certificate Effective DateMay 8, 2026

Certificate Expiration DateMay 7, 2028

Laboratory DirectorDenise Hom

Laboratory Phone(818) 595-3580

Laboratory LocationLakeside Medical Organization, A Medical Group, In7325 Medical Center Dr, Ste 101, West Hills, CA 91307

CLIA data matches this NPI record on: Name

This certificate is issued to a laboratory to perform only waived tests.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ALLEN YOUSIF

Pharmacist

8501 FALLBROOK AVE STE 300
WEST HILLS, CA 91304

Los Angeles County (818) 654-3400

REGAL MEDICAL GROUP, INC.

Internal Medicine

8501 FALLBROOK AVE STE 300
WEST HILLS, CA 91304

Los Angeles County (818) 654-3400

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 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.

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 24 days 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.