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

Individual provider Clinical Psychologist · NPI 1033400247

Dr. John P Dennis, PHD is a Clinical Psychologist in Washington, District of Columbia. Works from 2 locations. Licensed in District of Columbia.

Licensed in
DC
In the registry since
2011
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

1729 21st St NW
Washington, DC 20009-1101
Phone: (215) 806-6442
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • Walter Reed Army Medical Center 6900 Georgia Ave Nw, Washington, DC 20307-0001 — (202) 782-6063

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence PSY1000747 (DC)

Record details

NPI number1033400247
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedApril 21, 2011
Last updated in NPPESMarch 12, 2019

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