Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Karen K Deasey MD

Dermatology Physician in Bryn Mawr, PA · enumerated 2006 · authorized official Karen Deasey, Owner.

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

National Provider Identifier

1528169026

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Registry record

Entity type Organization (Type 2)

Legal business name Karen K Deasey MD

Practice address 945 E Haverford Rd Ste 6, Bryn Mawr, PA, 19010

Phone (610) 525-1920

Fax (610) 525-8393

Enumeration date Sep 26, 2006

Last updated in NPPES Oct 21, 2020

Taxonomy & classification

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Karen Deasey

Title Owner

Phone (610) 525-1920

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

Where is Karen K Deasey MD located?

The practice location on file with NPPES is in Bryn Mawr, PA.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2020-10-21. Verify at npiregistry.cms.hhs.gov.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-10-21.