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HOLLY GENNARO MD
NPI 1811637515
Dermatology in Westford, MA

Active since March 30, 2022PECOS Enrolled
133 LITTLETON RD STE 205206, WESTFORD, MA 01886(978) 692-9978(978) 589-6835 Get Directions Write a Review

NPPES record last updated: September 4, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Sep 4, 2026, Jul 15, 2026 (2 updates tracked since 2026).

About Holly Gennaro Md NPPES

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

HOLLY GENNARO MD (NPI 1811637515) is an individual dermatology provider in Westford, Massachusetts, licensed in Massachusetts (1027267) and active in the NPI registry since March 2022. She is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1811637515
Entity TypeIndividualFemale
Primary Taxonomy207N00000X
Provider Legal NameHOLLY GENNAROCredential: MD
Location Address133 LITTLETON RD STE 205206Westford, MA 01886-3115
Mailing Address526 Main St Ste 302Acton, MA 01720-3310 · (978) 371-7010 · Fax (978) 371-0522
Phone(978) 692-9978
Fax(978) 589-6835
Sole ProprietorNo
Enumeration DateMarch 30, 2022
Last NPPES UpdateSeptember 4, 20262 updates tracked since enumeration
NPPES CertifiedSeptember 4, 2026
✔ NPI 1811637515 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyDermatologyAllopathic & Osteopathic Physicians
Taxonomy Code207N00000X
License✔ Licensed in MA · 1027267
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 ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
133 LITTLETON RD STE 205206, Westford, MA 01886
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Other Names 1

Former Name (1)Holly Neale Md

Secondary Practice Locations 2

Location 186 Baker Avenue Ext Ste 100Concord, MA 01742-2132 · Phone (978) 371-7010 · Fax (978) 287-4268
Location 254 Baker Avenue Ext Ste 305&306Concord, MA 01742-2137 · Phone (978) 371-7010 · Fax (978) 287-4268

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, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Holly Gennaro Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01886 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$97.64 typical visit price
range $63.72 – $189.86
Typical copayment $24.41 (range $15.93 – $47.46)
Most-billed visit code 99203
Established Patient
$78.84 typical visit price
range $21.07 – $155.29
Typical copayment $19.71 (range $5.26 – $38.82)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Holly Gennaro's NPI number?

The NPI number for Holly Gennaro is 1811637515. It was assigned to this individual provider in the NPPES registry on March 30, 2022. The provider is also known as Holly Neale MD.

Where is Holly Gennaro located?

Holly Gennaro practices at 133 Littleton Rd Ste 205206, Westford, MA 01886. The listed phone number is (978) 692-9978.

What is Holly Gennaro's specialty?

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

Is Holly Gennaro enrolled in Medicare?

Yes. Holly Gennaro is registered in the Medicare PECOS enrollment system.

What insurance does Holly Gennaro accept?

Health plans from Anthem Blue Cross and Blue Shield list Holly Gennaro 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 Holly Gennaro was last updated on September 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.