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ON SITE DERMATOLOGY OF WASHINGTON PLLC
NPI 1083135693
Dermatology in Seattle, WA

Active since July 05, 2017
600 STEWART ST STE 400, SEATTLE, WA 98101(877) 345-5300(561) 989-3665 Get Directions Write a Review

NPPES record last updated: June 22, 2022. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jan 23, 2019, Jul 5, 2017 (2 updates tracked since 2017).

About On Site Dermatology Of Washington Pllc NPPES

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

ON SITE DERMATOLOGY OF WASHINGTON PLLC (NPI 1083135693) is a healthcare organization registered as a dermatology in Seattle, Washington and active in the NPI registry since July 2017. The organization lists Adam Plotkin, Authorized Official, as its authorized official.

NPPES Registry Identity

NPI1083135693
Entity TypeOrganization
Primary Taxonomy207N00000X
Legal Business NameON SITE DERMATOLOGY OF WASHINGTON PLLC
Location Address600 STEWART ST STE 400Seattle, WA 98101-1217
Mailing Address4700 Exchange Ct Ste 110Boca Raton, FL 33431-4450 · (561) 314-2000 · Fax (561) 431-2821
Phone(877) 345-5300
Fax(561) 989-3665
Organization SubpartNo
Authorized OfficialAdam PlotkinAuthorized Official · (561) 314-2000
Enumeration DateJuly 5, 2017
Last NPPES UpdateJune 22, 20222 updates tracked since enumeration
NPPES CertifiedJune 22, 2022
✔ NPI 1083135693 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.
600 STEWART ST STE 400, Seattle, WA 98101
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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

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Premera Blue Cross Blue Shield of Alaska.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)

On Site Dermatology Of Washington Pllc 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 On Site Dermatology Of Washington PLLC, which bills Medicare for the services they deliver. They are listed nearest first.

Clinicians, nearest first (2)

Animesh Sinha, M.D
Dermatology
NPI 1285733014
10 UNION SQ E SUITE 3C
New York, NY 10003
(212) 844-8800
✔ PECOS2,408 mi
Adam Plotkin, MD
Dermatology
NPI 1306896105
5210 LINTON BLVD SUITE 307
Delray Beach, FL 33484
(561) 499-0660
✔ PECOS✔ Accepts Medicare2,705 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 On Site Dermatology Of Washington PLLC's NPI number?

The NPI number for On Site Dermatology Of Washington PLLC is 1083135693. It was assigned to this organization in the NPPES registry on July 5, 2017.

Where is On Site Dermatology Of Washington PLLC located?

On Site Dermatology Of Washington PLLC is located at 600 Stewart St Ste 400, Seattle, WA 98101. The listed phone number is (877) 345-5300.

What is On Site Dermatology Of Washington PLLC's specialty?

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

Is On Site Dermatology Of Washington PLLC enrolled in Medicare?

Yes. On Site Dermatology Of Washington PLLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through On Site Dermatology Of Washington PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians, all in Dermatology, reassign their Medicare billing to On Site Dermatology Of Washington PLLC. 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 On Site Dermatology Of Washington PLLC accept?

Health plans from Premera Blue Cross Blue Shield of Alaska list On Site Dermatology Of Washington PLLC 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 On Site Dermatology Of Washington PLLC was last updated on June 22, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.