NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Keystone Dermatology Partners, LLC

Dermatology Physician in King of Prussia, PA · enumerated 2017 · authorized official Clifford Perlis, President.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1801329552

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Keystone Dermatology Partners, LLC
Practice address 216 Mall Blvd Ste 101, King of Prussia, PA, 19406
Phone (215) 390-1449
Fax (215) 390-1449
Enumeration date Apr 10, 2017
Last updated in NPPES Apr 10, 2017

Taxonomy & classification

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Clifford Perlis
Title President
Phone (215) 356-6942

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Keystone Dermatology Partners, LLC?
The NPI for Keystone Dermatology Partners, LLC is 1801329552, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Keystone Dermatology Partners, LLC?
NPPES lists Clifford Perlis (President) as the authorized official for this organization.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-04-10.