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HILLSIDE DERMATOLOGY
NPI 1851174924
Dermatology in Torrance, CA

Active since August 14, 2023CLIA 05D2298819 · Certificate of Compliance
24520 HAWTHORNE BLVD STE 240, TORRANCE, CA 90505(310) 300-6206 Get Directions Write a Review

NPPES record last updated: October 10, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 10, 2023, Aug 14, 2023 (2 updates tracked since 2023).

About Hillside Dermatology NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

HILLSIDE DERMATOLOGY (NPI 1851174924) is a healthcare organization registered as a dermatology in Torrance, California and active in the NPI registry since August 2023. The organization holds a CLIA Certificate of Compliance certificate valid through April 6, 2028 and lists Albert Antonyan, Ceo, as its authorized official.

NPPES Registry Identity

NPI1851174924
Entity TypeOrganization
Primary Taxonomy207N00000X
Legal Business NameHILLSIDE DERMATOLOGY
Location Address24520 HAWTHORNE BLVD STE 240Torrance, CA 90505-6849
Mailing Address24520 Hawthorne Blvd Ste 240Torrance, CA 90505-6849 · (310) 300-6206
Phone(310) 300-6206
Organization SubpartNo
Authorized OfficialAlbert AntonyanCeo · (310) 300-6206
Enumeration DateAugust 14, 2023
Last NPPES UpdateOctober 10, 20232 updates tracked since enumeration
NPPES CertifiedOctober 10, 2023
✔ NPI 1851174924 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDermatologyAllopathic & Osteopathic Physicians
Taxonomy Code207N00000X
Definition
A dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The dermatologist has had additional training and experience in the diagnosis and treatment of skin cancers, melanomas, moles and other tumors of the skin, the management of contact dermatitis and other allergic and nonallergic skin disorders, and in the recognition of the skin manifestations of systemic (including internal malignancy) and infectious diseases. Dermatologists have special training in dermatopathology and in the surgical techniques used in dermatology. They also have expertise in the management of cosmetic disorders of the skin such as hair loss and scars and the skin changes associated with aging.
24520 HAWTHORNE BLVD STE 240, Torrance, CA 90505
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Hillside Dermatology is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

2

Medicare enrollment records show 2 clinicians reassign Medicare billing to Hillside Dermatology, which bills Medicare for the services they deliver. Of these, 2 practice at this address. They are listed nearest first.

Clinicians, nearest first (2)

Albert Antonyan, MD
Dermatology
NPI 1457770273
24520 HAWTHORNE BLVD STE 240
Torrance, CA 90505
(310) 300-6206
✔ PECOS✔ Accepts MedicareSame address
Holly Antonyan, N.P.
Nurse Practitioner
NPI 1144500398
24520 HAWTHORNE BLVD STE 240
Torrance, CA 90505
(310) 300-6206
✔ PECOS✔ Accepts MedicareSame address

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 Compliance 05D2298819

Hillside Dermatology Inc · Torrance, CA
Active · expires Apr 6, 2028
CLIA Number05D2298819
Laboratory TypePhysician Office
Certificate Effective DateApril 7, 2026
Certificate Expiration DateApril 6, 2028
Laboratory DirectorAlbert S. Antonyan
Laboratory Phone(310) 300-6206
Laboratory LocationHillside Dermatology Inc24520 Hawthorne Blvd Ste 240, Torrance, CA 90505
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory after an inspection that finds the laboratory to be in compliance with all applicable CLIA requirements.

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 Hillside Dermatology's NPI number?

The NPI number for Hillside Dermatology is 1851174924. It was assigned to this organization in the NPPES registry on August 14, 2023.

Where is Hillside Dermatology located?

Hillside Dermatology is located at 24520 Hawthorne Blvd Ste 240, Torrance, CA 90505. The listed phone number is (310) 300-6206.

What is Hillside Dermatology's specialty?

The primary specialty registered for this NPI is Dermatology with taxonomy code 207N00000X.

Is Hillside Dermatology enrolled in Medicare?

Yes. Hillside Dermatology is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Hillside Dermatology?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians reassign their Medicare billing to Hillside Dermatology, in Dermatology and Nurse Practitioner. 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Hillside Dermatology hold a CLIA laboratory certificate?

Yes. A Certificate of Compliance (number 05D2298819) is associated with this NPI, valid through April 6, 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 Hillside Dermatology was last updated on October 10, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.