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

Dr. Steven Mattis, PHD

Individual provider Psychologist · NPI 1285839324

Dr. Steven Mattis, PHD is a Psychologist in White Plains, New York. Licensed in New York. Registered with an NPI since 2007.

Licensed in
NY
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.

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Practice location Address checks out

34 S Broadway Ste 100
White Plains, NY 10601-4400
Phone: (914) 997-5151
Fax: (914) 997-0333
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence 003294-0 (NY)

Record details

NPI number1285839324
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedJune 19, 2007
Last updated in NPPESJuly 8, 2007

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