Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Eileen R Potocki Ratajczak, PHD

Psychologist in Baltimore, MD · enumerated 2005.

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

National Provider Identifier

1427039528

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Registry record

Entity type Individual (Type 1)

Name Eileen R Potocki Ratajczak

Credential PHD

Sex Female

Practice address 10 N Greene St, Baltimore, MD, 21201

Phone (410) 605-7000

Enumeration date Nov 7, 2005

Last updated in NPPES Jul 26, 2016

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License 03016 (MD) 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.

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Frequently asked questions

What is the NPI number for Eileen Potocki Ratajczak?

The National Provider Identifier (NPI) for Eileen Potocki Ratajczak is 1427039528, a Type 1 (individual) record in the CMS NPPES registry.

Where does Eileen Potocki Ratajczak practice?

The practice location on file with NPPES is in Baltimore, MD. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-07-26.