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

Dr. Mark Louis Fisher, PHD

Individual provider Clinical Psychologist · NPI 1659457950

Dr. Mark Louis Fisher, PHD is a Clinical Psychologist in Severna Park, Maryland. Practices as a sole proprietor. Licensed in Maryland.

Licensed in
MD
In the registry since
2006
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

537 Ritchie Hwy Ste 1C
Severna Park, MD 21146-2930
Phone: (410) 315-7715
Fax: (410) 315-7541
Show map & directions

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

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence 2572 (MD)

Record details

NPI number1659457950
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedOctober 29, 2006
Last updated in NPPESJuly 8, 2007

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