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

Individual provider Psychologist · NPI 1598837379

Caleb J Siefert, PHD is a Psychologist in Boston, Massachusetts. Licensed in Massachusetts. Registered with an NPI since 2006.

Licensed in
MA
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.

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Practice location Address checks out

55 Fruit Street Blk 11 MGH Psychiatry Service
Boston, MA 02114
Phone: (617) 724-9144
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence PSY8611 (MA)

Record details

NPI number1598837379
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedNovember 15, 2006
Last updated in NPPESJuly 8, 2007
Mailing addressPo Box 9142, Mass General Physicians Organization Inc, Charlestown, MA 02129-9142

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