MARK AMSTER DERM
NPI 1265098032
Dermatology in Mashpee, MA

Active since May 16, 2019
800 FALMOUTH RD STE 101B, MASHPEE, MA 02649(617) 783-7100 Get Directions Write a Review

NPPES record last updated: December 4, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 4, 2025, Jun 16, 2020, Sep 20, 2019 and 1 more (4 updates tracked since 2019).

About Mark Amster Derm NPPES

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

MARK AMSTER DERM (NPI 1265098032) is a healthcare organization registered as a dermatology in Mashpee, Massachusetts and active in the NPI registry since May 2019. The organization maintains 2 additional practice locations and lists Mark S Amster, Authorized Group Official, as its authorized official.

NPPES Registry Identity

NPI1265098032
Entity TypeOrganization
Primary Taxonomy207N00000X
Legal Business NameMARK AMSTER DERM
Location Address800 FALMOUTH RD STE 101BMashpee, MA 02649-3352
Mailing AddressPo Box 590129Newton Center, MA 02459-0002 · (617) 783-7100
Organization SubpartNo
Authorized OfficialMark S AmsterAuthorized Group Official · (617) 783-7100
Enumeration DateMay 16, 2019
Last NPPES UpdateDecember 4, 20254 updates tracked since enumeration
NPPES CertifiedDecember 4, 2025
✔ NPI 1265098032 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.
800 FALMOUTH RD STE 101B, Mashpee, MA 02649

Secondary Practice Locations 2

Location 1800 Falmouth Rd Ste 101BMashpee, MA 02649-3348 · Phone (617) 762-7100
Location 2280 Washington St Ste 212Brighton, MA 02135-3511 · Phone (617) 783-7100 · Fax (617) 783-7104

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

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)

Mark Amster Derm is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

3

Medicare enrollment records show 3 clinicians reassign Medicare billing to Mark Amster Derm, which bills Medicare for the services they deliver. They are listed nearest first.

Clinicians, nearest first (3)

Dermatology
NPI 1518947068
280 WASHINGTON ST SUITE 212
Brighton, MA 02135
(617) 783-7100
✔ PECOS✔ Accepts Medicare61 mi
Dermatology
NPI 1104995133
280 WASHINGTON ST SUITE 212
Brighton, MA 02135
(617) 783-7100
✔ PECOS✔ Accepts Medicare61 mi
Pathology
NPI 1184600017
32 ROCKPORT RD
Weston, MA 02493
(617) 254-7284
✔ PECOS✔ Accepts Medicare65 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Mark Amster Derm's NPI number?

The NPI number for Mark Amster Derm is 1265098032. It was assigned to this organization in the NPPES registry on May 16, 2019.

Where is Mark Amster Derm located?

Mark Amster Derm is located at 800 Falmouth Rd Ste 101B, Mashpee, MA 02649. The listed phone number is (617) 783-7100.

What is Mark Amster Derm's specialty?

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

Is Mark Amster Derm enrolled in Medicare?

Yes. Mark Amster Derm is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Mark Amster Derm?

According to the CMS Revalidation Reassignment List (October 2026 release), 3 clinicians reassign their Medicare billing to Mark Amster Derm, in Dermatology and Pathology. 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Mark Amster Derm accept?

Health plans from Anthem Blue Cross and Blue Shield list Mark Amster Derm 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 Mark Amster Derm was last updated on December 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.