Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Katherine Vaughn Fielder,Ph.D. L.L.C.

Psychologist in Phoenix, AZ · enumerated 2007 · authorized official Katherine Fielder, Owner.

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

National Provider Identifier

1720274640

Verified

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Registry record

Entity type Organization (Type 2)

Legal business name Katherine Vaughn Fielder,Ph.D. L.L.C.

Practice address 1702 E Highland Ave Ste 404, Phoenix, AZ, 85016

Phone (602) 604-9440

Fax (602) 604-9600

Enumeration date Sep 25, 2007

Last updated in NPPES Oct 16, 2007

Taxonomy & classification

103T00000X Psychologist Behavioral Health & Social Service Providers · License 3553 (AZ) Primary

Authorized official

Name Katherine Fielder

Title Owner

Phone (602) 604-9440

Other identifiers

Identifier	Type	State	Issuer
3553	Other	AZ	STATE LICENSE

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 a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

What type of organization is Katherine Vaughn Fielder,Ph.D. L.L.C.?

Katherine Vaughn Fielder,Ph.D. L.L.C. is registered in NPPES as a Psychologist (its primary provider taxonomy).

Providers at this address

Browse all →

Alicia A. Garcia,Ph.D.,L.L.C. Clinical Psychologist · Phoenix, AZ NPI 1265626097

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-16.