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

LEXINGTON-WALTHAM DERMATOLOGY GROUP INC
NPI 1255463972
Specialist in Lexington, MA

Active since March 09, 2007CLIA 22D1019451 · Microscopy
57 BEDFORD ST STE 201, LEXINGTON, MA 02420(781) 862-2322(781) 863-0927 Get Directions Write a Review

NPPES record last updated: October 7, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Oct 7, 2026, Feb 1, 2023, Aug 22, 2020 (3 updates tracked since 2020).

About Lexington-waltham Dermatology Group Inc NPPES

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

LEXINGTON-WALTHAM DERMATOLOGY GROUP INC (NPI 1255463972) is a healthcare organization registered as a specialist in Lexington, Massachusetts and active in the NPI registry since March 2007. The organization holds a CLIA Microscopy certificate valid through November 18, 2027 and lists Samuel D Goos, Managing Partner, as its authorized official.

NPPES Registry Identity

NPI1255463972
Entity TypeOrganization
Primary Taxonomy174400000X
Legal Business NameLEXINGTON-WALTHAM DERMATOLOGY GROUP INC
Location Address57 BEDFORD ST STE 201Lexington, MA 02420-4550
Mailing Address526 Main St Ste 302Acton, MA 01720-3310 · (978) 371-7010 · Fax (978) 371-0522
Phone(781) 862-2322
Fax(781) 863-0927
Organization SubpartNo
Authorized OfficialSamuel D GoosManaging Partner · (978) 371-7010
Enumeration DateMarch 9, 2007
Last NPPES UpdateOctober 7, 20263 updates tracked since enumeration
NPPES CertifiedOctober 7, 2026
✔ NPI 1255463972 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 5

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
Definition
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
Also ListedDermatologyTaxonomy 207N00000X
Also ListedDermatology · MOHS-Micrographic SurgeryTaxonomy 207ND0101X
Also ListedDermatology · DermatopathologyTaxonomy 207ND0900X
Also ListedPathology · Anatomic Pathology & Clinical PathologyTaxonomy 207ZP0102X
57 BEDFORD ST STE 201, Lexington, MA 02420
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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)

Lexington-waltham Dermatology Group Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

5

Medicare enrollment records show 5 clinicians reassign Medicare billing to Lexington-Waltham Dermatology Group Inc, which bills Medicare for the services they deliver. Of these, 3 practice at this address. They are listed nearest first.

Clinicians, nearest first (5)

Lisa Arbesfeld, MD
Dermatology
NPI 1548351679
57 BEDFORD ST STE 201
Lexington, MA 02420
(781) 862-2322
✔ PECOS✔ Accepts MedicareSame address
Marion Buchsbaum, MD
Dermatology
NPI 1730270851
57 BEDFORD ST STE 201
Lexington, MA 02420
(781) 862-2322
✔ PECOS✔ Accepts MedicareSame address
Jill Slater Freed, M.D.
Dermatology
NPI 1255389425
57 BEDFORD STREET LEXINGTON WALTHAM DERMATOLOGY
Lexington, MA 02420
(781) 862-2322
✔ PECOS✔ Accepts MedicareSame address
Stuart Arbesfeld, M.D.
Dermatology
NPI 1326123308
275 VARNUM AVE SUITE 107
Lowell, MA 01854
(978) 452-3888
✔ PECOS✔ Accepts Medicare14 mi
Eric Schmidgal, M.D.
Dermatology
NPI 1366854960
NAVAL MEDICAL CTR 34800 BOB WILSON DR.
San Diego, CA 92134
(619) 532-6400
✔ PECOS✔ Accepts Medicare2,574 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 for Provider-Performed Microscopy Procedures (PPMP) 22D1019451

Lexington-Waltham Dermatology Group PC · Lexington, MA
Active · expires Nov 18, 2027
CLIA Number22D1019451
Laboratory TypePhysician Office
Certificate Effective DateNovember 19, 2025
Certificate Expiration DateNovember 18, 2027
Laboratory DirectorLisa E. Arbesfeld
Laboratory Phone(781) 862-2322
Laboratory LocationLexington-Waltham Dermatology Group PC57 Bedford Street, Suite 201, Lexington, MA 02420
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform 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 Lexington-Waltham Dermatology Group Inc's NPI number?

The NPI number for Lexington-Waltham Dermatology Group Inc is 1255463972. It was assigned to this organization in the NPPES registry on March 9, 2007.

Where is Lexington-Waltham Dermatology Group Inc located?

Lexington-Waltham Dermatology Group Inc is located at 57 Bedford St Ste 201, Lexington, MA 02420. The listed phone number is (781) 862-2322.

What is Lexington-Waltham Dermatology Group Inc's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Lexington-Waltham Dermatology Group Inc enrolled in Medicare?

Yes. Lexington-Waltham Dermatology Group Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Lexington-Waltham Dermatology Group Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 5 clinicians, all in Dermatology, reassign their Medicare billing to Lexington-Waltham Dermatology Group Inc. 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, 3 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Lexington-Waltham Dermatology Group Inc hold a CLIA laboratory certificate?

Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 22D1019451) is associated with this NPI, valid through November 18, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Lexington-Waltham Dermatology Group Inc accept?

Health plans from Anthem Blue Cross and Blue Shield list Lexington-Waltham Dermatology Group Inc 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 Lexington-Waltham Dermatology Group Inc was last updated on October 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 33 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.