Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Mary M Leonard, PHD

Individual provider Clinical Psychologist · NPI 1134362908

Mary M Leonard, PHD is a Clinical Psychologist in Arnold, Maryland. Practices as a sole proprietor. Licensed in Maryland.

Licensed in
MD
In the registry since
2009
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

Practice location Address checks out

1509 Ritchie Hwy Ste F
Arnold, MD 21012-2742
Phone: (410) 757-2077
Fax: (410) 757-5184
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence 01090 (MD)

Record details

NPI number1134362908
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorYes
NPI enumeratedApril 9, 2009
Last updated in NPPESApril 9, 2009

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