Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. D'Arcy Lyness, PHD

Psychologist in Wayne, PA · enumerated 2015.

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

National Provider Identifier

1174997464

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. D'Arcy Lyness

Credential PHD

Sex Female

Practice address Wayne, PA, 19087

Phone (610) 687-2929

Enumeration date Nov 24, 2015

Last updated in NPPES Nov 24, 2015

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

103TB0200X Cognitive & Behavioral Psychologist Behavioral Health & Social Service Providers · License PS009082L (PA) Secondary

103T00000X Psychologist Behavioral Health & Social Service Providers · License PS009082L (PA) Primary

103TC2200X Clinical Child & Adolescent Psychologist Behavioral Health & Social Service Providers · License PS009082L (PA) Secondary

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

What specialty is D'Arcy Lyness?

D'Arcy Lyness is registered in NPPES with the primary taxonomy of Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-11-24.