MARK STEWART AMSTER, MD — NPI 1518947068 (Board-Certified Dermatologist (Skin, Hair & Nail Medical/Surgical Specialist) in BRIGHTON, MA)

CMS-1500 Box 24J / 33a • NPI

1518947068

Type 1 Individual Rendering/Ordering

HIPAA NUCC Taxonomy • CMS Code

207N00000X (CMS 07)

Board-Certified Dermatologist (Skin, Hair & Nail Medical/Surgical Specialist)

Box 32 Service Location & ZIP+4

280 WASHINGTON ST, SUITE 212, BRIGHTON, MA, 02135-3511

✓ 9-Digit EDI 837 ZIP+4 (02135-3511)

Practice Phone & Referral Fax

(617) 783-7100

Direct NPPES Verification Line

✓ HHS OIG LEIE Sanction Screening — VERIFIED CLEAR: NPI 1518947068 (MARK STEWART AMSTER, MD) has 0 active federal exclusions across all 84,224 HHS OIG LEIE sanction records (Database Verified: 2026-11-11).

CMS Medicare Order & Referring PECOS Eligibility

This practitioner does not currently appear in the CMS individual Order & Referring PECOS file (may practice in pediatrics, commercial-only networks, or hospital-employed settings).

Official CMS NPPES Credential & Practice Profile

10-Digit NPI Number	`1518947068` (NPI-1 Individual Practitioner)
Provider / Legal Name	MARK STEWART AMSTER, MD
Plain-English Specialty	Board-Certified Dermatologist (Skin, Hair & Nail Medical/Surgical Specialist) NUCC Code: `207N00000X` (Dermatology)
Certifying / Licensing Body	American Board of Dermatology (ABD)
Practice Location Address	280 WASHINGTON ST, SUITE 212, BRIGHTON, MA, 02135-3511
Practice Telephone / Fax	Tel: (617) 783-7100
Administrative Mailing Address	18 WHISPERING LN, NATICK, MA, 01760-5883
Enumeration & Last Sync	Enumerated: 2006-01-19 \| CMS Record Updated: 2026-07-13

Clinic Location, Accessibility & Directions

📍 Practice Location & Patient Access

280 WASHINGTON ST, SUITE 212, BRIGHTON, MA, 02135-3511

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Plain-English Taxonomy & CMS Crosswalk (207N00000X)

What Does Taxonomy Code 207N00000X Mean?

In the HIPAA National Uniform Claim Committee (NUCC) classification, code 207N00000X translates to:
"Board-Certified Dermatologist (Skin, Hair & Nail Medical/Surgical Specialist)"

CMS-1500 Medicare Specialty Crosswalk: CMS Code 07 (Physician/Dermatology)
Certifying / Accrediting Authority: American Board of Dermatology (ABD)
Clinical Scope: Changing moles, skin rashes, severe acne, eczema, psoriasis, fungal infections, hair loss, or skin cancer checks.

Specialty Clinical Procedures & Therapeutic Classes

Standard Scope of Care (MARK STEWART AMSTER, MD)

Typical CPT / Diagnostic Procedures:

Full-Body Dermoscopy & Skin Cancer Screening
Shave, Punch & Excisional Skin Biopsy (CPT 11102–11107)
Cryotherapy Destruction of Actinic Keratoses & Viral Warts (CPT 17000)

Common Therapeutic Classes:

Topical Corticosteroids (Triamcinolone, Clobetasol) & Calcineurin Inhibitors
Topical & Oral Retinoids (Tretinoin, Adapalene, Isotretinoin)
Doxycycline, Minocycline & Antifungals (Terbinafine, Ketoconazole)

All Registered NUCC Taxonomies & State Licenses

Taxonomy Code & Plain-English Description	State License & Primary Status
`207N00000X` — Dermatology Plain English: Board-Certified Dermatologist (Skin, Hair & Nail Medical/Surgical Specialist)	State: MA \| License: `70448` \| Primary: Yes (Primary)

Medical Billing, RCM & Hospital Credentialing Teams:

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MARK STEWART AMSTER, MD (NPI #1518947068)