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THE DERMATOLOGY COLLECTIVE INC
NPI 1720723448
Dermatology in Glendora, CA

Active since April 28, 2022CLIA 05D2324670 · Certificate of Compliance
552 W FOOTHILL BLVD STE 202, GLENDORA, CA 91741(818) 795-8252 Get Directions Write a Review

NPPES record last updated: August 24, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 24, 2022, Aug 2, 2022, Jul 21, 2022 and 1 more (4 updates tracked since 2022).

About The Dermatology Collective Inc NPPES

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

THE DERMATOLOGY COLLECTIVE INC (NPI 1720723448) is a healthcare organization registered as a dermatology in Glendora, California and active in the NPI registry since April 2022. The organization holds a CLIA Certificate of Compliance certificate valid through May 28, 2027 and lists Christopher Tomassian, Owner, as its authorized official.

NPPES Registry Identity

NPI1720723448
Entity TypeOrganization
Primary Taxonomy207N00000X
Legal Business NameDERMATOLOGY COLLECTIVE INC
Location Address552 W FOOTHILL BLVD STE 202Glendora, CA 91741-2470
Mailing Address552 W Foothill Blvd Ste 202Glendora, CA 91741-2470 · (626) 240-2020
Phone(818) 795-8252
Organization SubpartNo
Authorized OfficialChristopher TomassianOwner · (626) 240-2020
Enumeration DateApril 28, 2022
Last NPPES UpdateAugust 24, 20224 updates tracked since enumeration
NPPES CertifiedAugust 24, 2022
✔ NPI 1720723448 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ 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.
Also ListedDermatology · Procedural DermatologyTaxonomy 207NS0135X
552 W FOOTHILL BLVD STE 202, Glendora, CA 91741
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Other Names 1

Other NameThe Dermatology Collective Inc

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 MULTIPLE 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)

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

Clinicians Billing Medicare Through This Organization

5

Medicare enrollment records show 5 clinicians reassign Medicare billing to The Dermatology Collective Inc, which bills Medicare for the services they deliver. Of these, 2 practice at this address. They are listed nearest first.

Clinicians, nearest first (5)

Christopher Tomassian, MD
Dermatology
NPI 1871097550
552 W FOOTHILL BLVD STE 202
Glendora, CA 91741
(818) 795-8252
✔ PECOS✔ Accepts MedicareSame address
Virginia Jones, MD
Dermatology
NPI 1205412251
552 W FOOTHILL BLVD STE 202
Glendora, CA 91741
(626) 240-2020
✔ PECOS✔ Accepts MedicareSame address
Marine Chilyan
Nurse Practitioner
NPI 1639959661
5260 RIVERTON AVE APT 3
North Hollywood, CA 91601
(818) 381-6777
✔ PECOS✔ Accepts Medicare28 mi
Bobak Hedayati, MD
Dermatology
NPI 1568090272
5010 CAMPUS DR # 140
Newport Beach, CA 92660
(949) 395-6221
✔ PECOS✔ Accepts Medicare32 mi
Mina Amin, MD
Dermatology
NPI 1417451196
11645 WILSHIRE BLVD STE 1080
Los Angeles, CA 90025
(310) 275-1170
✔ PECOS✔ Accepts Medicare34 mi

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 05D2324670

The Dermatology Collective · Glendora, CA
Active · expires May 28, 2027
CLIA Number05D2324670
Laboratory TypePhysician Office
Certificate Effective DateMay 29, 2025
Certificate Expiration DateMay 28, 2027
Laboratory DirectorChris Tomassian
Laboratory Phone(626) 240-2020
Laboratory LocationThe Dermatology Collective552 W Foothill Blvd Ste 202, Glendora, CA 91741
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 Dermatology Collective Inc's NPI number?

The NPI number for Dermatology Collective Inc is 1720723448. It was assigned to this organization in the NPPES registry on April 28, 2022. The provider is also known as The Dermatology Collective Inc.

Where is Dermatology Collective Inc located?

Dermatology Collective Inc is located at 552 W Foothill Blvd Ste 202, Glendora, CA 91741. The listed phone number is (818) 795-8252.

What is Dermatology Collective Inc's specialty?

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

Is Dermatology Collective Inc enrolled in Medicare?

Yes. Dermatology Collective Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Dermatology Collective Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 5 clinicians in 2 Medicare specialties reassign their Medicare billing to Dermatology Collective 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 Dermatology (4) and Nurse Practitioner (1). Of these, 2 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Dermatology Collective Inc hold a CLIA laboratory certificate?

Yes. A Certificate of Compliance (number 05D2324670) is associated with this NPI, valid through May 28, 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 Dermatology Collective Inc was last updated on August 24, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.