Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Elizabeth Kathryn Lefler, PHD

Psychologist in Waterloo, IA · enumerated 2016.

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

National Provider Identifier

1720434517

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Registry record

Entity type Individual (Type 1)

Name Elizabeth Kathryn Lefler

Credential PHD

Sex Female

Practice address 2055 Kimball Ave Ste 101, Waterloo, IA, 50702

Phone (319) 272-2112

Fax (319) 272-2107

Enumeration date May 11, 2016

Last updated in NPPES May 11, 2016

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License 001177 (IA) Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

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

Is NPI 1720434517 active?

Yes, as of the latest NPPES snapshot, NPI 1720434517 is active (record last updated 2016-05-11).

How do I verify Elizabeth Lefler's NPI record?

Cross-check NPI 1720434517 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-05-11.