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

NEWTON WELLESLEY DERMATOLOGY ASSOCIATES
NPI 1326166596
Dermatology in Wellesley, MA

Active since March 27, 2007CLIA 22D0077881 · Certificate of Compliance
65 WALNUT ST, SUITE 520, WELLESLEY, MA 02481(781) 237-3500(781) 237-7867 Get Directions Write a Review

NPPES record last updated: October 23, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Newton Wellesley Dermatology Associates NPPES

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

NEWTON WELLESLEY DERMATOLOGY ASSOCIATES (NPI 1326166596) is a healthcare organization registered as a dermatology in Wellesley, Massachusetts and active in the NPI registry since March 2007. The organization holds a CLIA Certificate of Compliance certificate valid through December 20, 2026 and lists David Aghassi, Physician, as its authorized official.

NPPES Registry Identity

NPI1326166596
Entity TypeOrganization
Primary Taxonomy207N00000X
Legal Business NameNEWTON WELLESLEY DERMATOLOGY ASSOCIATES
Location Address65 WALNUT ST, SUITE 520Wellesley, MA 02481-2118
Mailing Address65 Walnut St, Suite 520Wellesley, MA 02481-2118 · (781) 237-3500 · Fax (781) 237-7867
Fax(781) 237-7867
Organization SubpartNo
Authorized OfficialDavid AghassiPhysician · (781) 237-3500
Enumeration DateMarch 27, 2007
Last NPPES UpdateOctober 23, 2026
NPPES CertifiedOctober 23, 2026
✔ NPI 1326166596 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyDermatologyAllopathic & Osteopathic Physicians
Taxonomy Code207N00000X
Licenses✔ Licensed in MA · 157066✔ Licensed in MA · 75461✔ Licensed in MA · 58820✔ Licensed in MA · 238807
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 ListedPhysician AssistantTaxonomy 363A00000X · License 2027 (MA), PA1800 (MA)
65 WALNUT ST, Wellesley, MA 02481

Accepted 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)

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

Clinicians Billing Medicare Through This Organization

8

Medicare enrollment records show 8 clinicians reassign Medicare billing to Newton Wellesley Dermatology Associates, which bills Medicare for the services they deliver. Of these, 6 practice at this address and 8 within 10 miles. They are listed nearest first.

Clinicians, nearest first (8)

Dermatology
NPI 1386602753
65 WALNUT ST STE 520
Wellesley, MA 02481
(781) 237-3500
✔ PECOSSame address
Dermatology
NPI 1326429721
65 WALNUT ST STE 520
Wellesley Hills, MA 02481
(781) 237-3500
✔ PECOS✔ Accepts MedicareSame address
Dermatology
NPI 1285698936
65 WALNUT STREET SUITE 520
Wellesley, MA 02481
(781) 237-3500
✔ PECOS✔ Accepts MedicareSame address
Dermatology
NPI 1548251127
65 WALNUT ST STE 520
Wellesley, MA 02481
(781) 237-3500
✔ PECOS✔ Accepts MedicareSame address
Dermatology
NPI 1073576575
65 WALNUT ST STE 520
Wellesley, MA 02481
(781) 237-3500
✔ PECOS✔ Accepts MedicareSame address
Dermatology
NPI 1447205190
65 WALNUT STREET STE 520 NEWTON WELLESLEY DERMATOLOGY ASSOCIATES
Wellesley Hills, MA 02481
(781) 237-3500
✔ PECOS✔ Accepts MedicareSame address
Pathology
NPI 1184600017
32 ROCKPORT RD
Weston, MA 02493
(617) 254-7284
✔ PECOS✔ Accepts Medicare3.1 mi
Dermatology
NPI 1548461973
221 LONGWOOD AVE
Boston, MA 02115
(617) 732-4918
✔ PECOS✔ Accepts Medicare7.8 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 22D0077881

Newton Wellesley Dermatology Associates PC · Wellesley, MA
Active · expires Dec 20, 2026
CLIA Number22D0077881
Laboratory TypePhysician Office
Certificate Effective DateDecember 21, 2024
Certificate Expiration DateDecember 20, 2026
Laboratory DirectorDaihung V. Do
Laboratory Phone(781) 237-3500
Laboratory LocationNewton Wellesley Dermatology Associates PC65 Walnut Street Suite 302, Wellesley, MA 02481
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 Newton Wellesley Dermatology Associates's NPI number?

The NPI number for Newton Wellesley Dermatology Associates is 1326166596. It was assigned to this organization in the NPPES registry on March 27, 2007.

Where is Newton Wellesley Dermatology Associates located?

Newton Wellesley Dermatology Associates is located at 65 Walnut St Suite 520, Wellesley, MA 02481. The listed phone number is (781) 237-3500.

What is Newton Wellesley Dermatology Associates's specialty?

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

Is Newton Wellesley Dermatology Associates enrolled in Medicare?

Yes. Newton Wellesley Dermatology Associates is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Newton Wellesley Dermatology Associates?

According to the CMS Revalidation Reassignment List (October 2026 release), 8 clinicians in 2 Medicare specialties reassign their Medicare billing to Newton Wellesley Dermatology Associates. 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 (7) and Pathology (1). Of these, 6 practice at this address and 8 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Newton Wellesley Dermatology Associates hold a CLIA laboratory certificate?

Yes. A Certificate of Compliance (number 22D0077881) is associated with this NPI, valid through December 20, 2026. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Newton Wellesley Dermatology Associates accept?

Health plans from Anthem Blue Cross and Blue Shield list Newton Wellesley Dermatology Associates 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 Newton Wellesley Dermatology Associates was last updated on October 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.