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

Mark Douglas Landis, PSYD

Individual provider Clinical Psychologist · NPI 1205265923

Mark Douglas Landis, PSYD is a Clinical Psychologist in Towson, Maryland. Licensed in Maryland. Registered with an NPI since 2013.

Licensed in
MD
In the registry since
2013
What do these letters mean?
PSYD — Doctor of Psychology
A doctoral psychologist trained primarily for clinical practice.

See every abbreviation used in this directory →

Practice location Address checks out

901 Dulaney Valley Rd Ste 129
Towson, MD 21204-2600
Phone: (888) 818-6595
Fax: (410) 832-5783
Show map & directions

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

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence 03548 (MD)

Record details

NPI number1205265923
Entity typeIndividual (Type 1)
GenderMale
Credentials PSYD
Sole proprietorNo
NPI enumeratedNovember 4, 2013
Last updated in NPPESNovember 4, 2013

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