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

Dr. Peter Richard Oconnor, PSY.D.

Clinical Psychologist in Acton, MA · enumerated 2006.

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

National Provider Identifier

1184603334

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Registry record

Entity type Individual (Type 1)

Name Dr. Peter Richard Oconnor

Credential PSY.D.

Sex Male

Practice address Acton, MA, 01720

Phone (781) 646-2670

Fax (781) 646-2670

Enumeration date Jan 14, 2006

Last updated in NPPES Oct 25, 2025

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

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 3742 (MA) Primary

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

Other identifiers

Identifier	Type	State	Issuer
0515751	Medicaid	MA	-
1184603334	Other	-	NPI

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

How do I verify Peter Oconnor's NPI record?

Cross-check NPI 1184603334 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1184603334 active?

Yes, as of the latest NPPES snapshot, NPI 1184603334 is active (record last updated 2025-10-25).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-25.