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Dr. Mary S Leffell, PH.D.,ABMLI,ABHI

Specialist in Baltimore, MD · enumerated 2007 · practices at Johns Hopkins University.

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

National Provider Identifier

1013053867

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Registry record

Entity type Individual (Type 1)
Name Dr. Mary S Leffell
Credential PH.D.,ABMLI,ABHI
Sex Female
Practice address 2041 E Monument St, Baltimore, MD, 21205
Phone (410) 955-3600
Fax (410) 955-0431
Enumeration date Jan 29, 2007
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

174400000X Specialist Other Service Providers 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

Where does Mary Leffell practice?
The practice location on file with NPPES is in Baltimore, MD. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mary Leffell?
The National Provider Identifier (NPI) for Mary Leffell is 1013053867, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.