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

Dr. Ana T O'Reilly, PSYD

Mental Health Counselor in Silver Spring, MD · enumerated 2008.

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

National Provider Identifier

1558512244

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Registry record

Entity type Individual (Type 1)

Name Dr. Ana T O'Reilly

Credential PSYD

Sex Female

Practice address Silver Spring, MD, 20910

Phone (301) 588-8881

Enumeration date Oct 1, 2008

Last updated in NPPES Oct 1, 2008

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

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers 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.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Ana O'Reilly's NPI record?

Cross-check NPI 1558512244 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1558512244 active?

Yes, as of the latest NPPES snapshot, NPI 1558512244 is active (record last updated 2008-10-01).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-10-01.