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

Dr. Mark B Siegert, PHD

Individual provider Clinical Psychologist · NPI 1609897966

Dr. Mark B Siegert, PHD is a Clinical Psychologist in Millburn, New Jersey. Licensed in New Jersey. Registered with an NPI since 2006.

Licensed in
NJ
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.

See every abbreviation used in this directory →

Practice location Address checks out

95 Main St Ste 201
Millburn, NJ 07041
Phone: (973) 258-0390
Fax: (973) 258-0371
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence 35S100266700 (NJ)

Record details

NPI number1609897966
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedJuly 22, 2006
Last updated in NPPESJuly 8, 2007
Mailing address95 Main St, Suite 201, Millburn, NJ 07041

Other providers in Millburn