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HILLSIDE DERMATOLOGY PC
NPI 1669126546
Dermatology in Agawam, MA

Active since February 09, 2022CLIA 22D2272383 · Waiver
200 SILVER STREET SUITE 106, AGAWAM, MA 01001(413) 341-5350(413) 341-5335 Get Directions Write a Review

NPPES record last updated: May 5, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 5, 2026, Jan 14, 2026, Dec 3, 2025 and 1 more (4 updates tracked since 2022).

About Hillside Dermatology Pc NPPES

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

HILLSIDE DERMATOLOGY PC (NPI 1669126546) is a healthcare organization registered as a dermatology in Agawam, Massachusetts and active in the NPI registry since February 2022. The organization holds a CLIA Waiver certificate valid through November 18, 2026 and lists Mark Skalski, President, as its authorized official.

NPPES Registry Identity

NPI1669126546
Entity TypeOrganization
Primary Taxonomy207N00000X
Legal Business NameHILLSIDE DERMATOLOGY PC
Location Address200 SILVER STREET SUITE 106Agawam, MA 01001-3065
Mailing Address200 Silver St Unit 106Agawam, MA 01001-3067 · (413) 341-5350 · Fax (413) 341-5335
Phone(413) 341-5350
Fax(413) 341-5335
Organization SubpartNo
Authorized OfficialMark SkalskiPresident · (413) 341-5350
Enumeration DateFebruary 9, 2022
Last NPPES UpdateMay 5, 20264 updates tracked since enumeration
NPPES CertifiedMay 5, 2026
✔ NPI 1669126546 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.
200 SILVER STREET SUITE 106, Agawam, MA 01001
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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

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

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 Pc 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 PC, which bills Medicare for the services they deliver. Of these, 1 practice at this address. They are listed nearest first.

Clinicians, nearest first (2)

Harmony Hopkins, NP
Nurse Practitioner
NPI 1922522895
200 SILVER ST UNIT 106
Agawam, MA 01001
(413) 341-5350
✔ PECOSSame address
Steven Franks, MD
Dermatology
NPI 1548251093
506 GROTON RD
Westford, MA 01886
(978) 399-0061
✔ PECOS73 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 Waiver 22D2272383

Hillside Dermatology PC · Agawam, MA
Active · expires Nov 18, 2026
CLIA Number22D2272383
Laboratory TypePhysician Office
Certificate Effective DateNovember 19, 2024
Certificate Expiration DateNovember 18, 2026
Laboratory DirectorSteven A. Franks
Laboratory Phone(413) 341-5350
Laboratory LocationHillside Dermatology PC200 Silver St Ste 106, Agawam, MA 01001
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

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 PC's NPI number?

The NPI number for Hillside Dermatology PC is 1669126546. It was assigned to this organization in the NPPES registry on February 9, 2022.

Where is Hillside Dermatology PC located?

Hillside Dermatology PC is located at 200 Silver Street Suite 106, Agawam, MA 01001. The listed phone number is (413) 341-5350.

What is Hillside Dermatology PC's specialty?

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

Is Hillside Dermatology PC enrolled in Medicare?

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

How many clinicians bill Medicare through Hillside Dermatology PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians reassign their Medicare billing to Hillside Dermatology PC, 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, 1 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Hillside Dermatology PC hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 22D2272383) is associated with this NPI, valid through November 18, 2026. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Hillside Dermatology PC accept?

Health plans from Anthem Blue Cross and Blue Shield list Hillside Dermatology PC as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Hillside Dermatology PC was last updated on May 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.