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

Dr. Diane R Koslow, PHD

Individual provider Psychologist · NPI 1851500391

Dr. Diane R Koslow, PHD is a Psychologist in Rockville, Maryland. Practices as a sole proprietor. Licensed in Maryland.

Licensed in
MD
In the registry since
2007
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

6201 Executive Blvd
Rockville, MD 20852-3906
Phone: (301) 770-2847
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence 02135 (MD)

Record details

NPI number1851500391
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorYes
NPI enumeratedMay 22, 2007
Last updated in NPPESJuly 11, 2007

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