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

Dr. Patrick O'Connor, PSY.D.

Clinical Psychologist in Yarmouth, ME · enumerated 2014.

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

National Provider Identifier

1144640046

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Registry record

Entity type Individual (Type 1)

Name Dr. Patrick O'Connor

Credential PSY.D.

Sex Male

Practice address Yarmouth, ME, 04096

Phone (207) 205-9735

Enumeration date Apr 18, 2014

Last updated in NPPES Aug 30, 2022

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

Taxonomy & licenses

103TC2200X Clinical Child & Adolescent Psychologist Behavioral Health & Social Service Providers · License PS1477 (ME) Secondary

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License PS1477 (ME) Primary

PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice. About the PSYD 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.

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Frequently asked questions

How do I verify Patrick O'Connor's NPI record?

Cross-check NPI 1144640046 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1144640046 active?

Yes, as of the latest NPPES snapshot, NPI 1144640046 is active (record last updated 2022-08-30).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-08-30.