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SEMLER DERMATOLOGY, INC
NPI 1093868820
Dermatology in Lansdowne, VA

Active since January 18, 2007CLIA 49D1031923 · Microscopy
19465 DEERFIELD AVENUE, SUITE 408, LANSDOWNE, VA 20176(703) 723-6568(703) 723-4298 Get Directions Write a Review

NPPES record last updated: June 23, 2016. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Semler Dermatology, Inc NPPES

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

SEMLER DERMATOLOGY, INC (NPI 1093868820) is a healthcare organization registered as a dermatology in Lansdowne, Virginia and active in the NPI registry since January 2007. The organization holds a CLIA Microscopy certificate valid through October 12, 2028 and lists Douglas C Semler, President, as its authorized official.

NPPES Registry Identity

NPI1093868820
Entity TypeOrganization
Primary Taxonomy207N00000X
Legal Business NameSEMLER DERMATOLOGY, INC
Location Address19465 DEERFIELD AVENUE, SUITE 408Lansdowne, VA 20176
Mailing Address19465 Deerfield Avenue, Suite 408Lansdowne, VA 20176 · (703) 723-6568 · Fax (703) 723-4298
Phone(703) 723-6568
Fax(703) 723-4298
Organization SubpartNo
Authorized OfficialDouglas C SemlerPresident · (703) 723-6568
Enumeration DateJanuary 18, 2007
Last NPPES UpdateJune 23, 2016
✔ NPI 1093868820 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.
19465 DEERFIELD AVENUE, Lansdowne, VA 20176
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Semler Dermatology, Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

2

Medicare enrollment records show 2 clinicians reassign Medicare billing to Semler Dermatology, Inc, which bills Medicare for the services they deliver. Of these, 1 practice at this address. They are listed nearest first.

Clinicians, nearest first (2)

Douglas Semler, MD
Dermatology
NPI 1467403600
19465 DEERFIELD AVENUE SUITE 408
Lansdowne, VA 20176
(703) 723-6568
✔ PECOS✔ Accepts MedicareSame address
Maher Alharthi, M.D.
Dermatology
NPI 1588154520
12 ST PAUL DR STE 104
Chambersburg, PA 17201
(717) 263-8463
✔ PECOS✔ Accepts Medicare60 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) 49D1031923

Semler Dermatology, Inc · Lansdowne, VA
Active · expires Oct 12, 2028
CLIA Number49D1031923
Laboratory TypePhysician Office
Certificate Effective DateOctober 13, 2026
Certificate Expiration DateOctober 12, 2028
Laboratory DirectorDouglas C. Semler
Laboratory Phone(703) 433-0500
Laboratory LocationSemler Dermatology, Inc19465 Deerfield Avenue - Suite 408, Lansdowne, VA 20176
CLIA data matches this NPI record on: Address Name
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 Semler Dermatology, Inc's NPI number?

The NPI number for Semler Dermatology, Inc is 1093868820. It was assigned to this organization in the NPPES registry on January 18, 2007.

Where is Semler Dermatology, Inc located?

Semler Dermatology, Inc is located at 19465 Deerfield Avenue Suite 408, Lansdowne, VA 20176. The listed phone number is (703) 723-6568.

What is Semler Dermatology, Inc's specialty?

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

Is Semler Dermatology, Inc enrolled in Medicare?

Yes. Semler Dermatology, Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Semler Dermatology, Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians, all in Dermatology, reassign their Medicare billing to Semler Dermatology, 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, 1 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Semler Dermatology, Inc hold a CLIA laboratory certificate?

Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 49D1031923) is associated with this NPI, valid through October 12, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Semler Dermatology, Inc was last updated on June 23, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 years 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.