NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Erin L Seymour, PA-C

Physician Assistant in Mesa, AZ · enumerated 2010 · practices at Aap Dermatology & Cosmetic Surgery, P.C..

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

National Provider Identifier

1942511555

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Erin L Seymour
Credential PA-C
Sex Female
Practice address 3940 E. University Dr., Mesa, AZ, 85205
Fax (480) 832-5501
Enumeration date Jun 29, 2010
Last updated in NPPES Nov 9, 2016

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA21007 (CA) Secondary
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 5689 (AZ) Primary

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 does Erin Seymour practice?
The practice location on file with NPPES is in Mesa, AZ. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Erin Seymour?
The National Provider Identifier (NPI) for Erin Seymour is 1942511555, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-11-09.