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

Dr. Robert Frank Mannis, PHD

Individual provider Psychologist · NPI 1831224906

Dr. Robert Frank Mannis, PHD is a Psychologist in Frederick, Maryland. Practices as a sole proprietor. Licensed in Maryland.

Licensed in
MD
In the registry since
2007
Specialties on file
2
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

235 Wes Patrick St Robert F Mannis Phd
Frederick, MD 21701
Phone: (301) 662-4160
Fax: (301) 620-4344
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence 2233 (MD)
Psychologist Taxonomy 103T00000X · Licence 02233 (MD)

Record details

NPI number1831224906
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedFebruary 22, 2007
Last updated in NPPESOctober 31, 2011

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