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

Dr. Stefan Jadaszewski, PHD

Individual provider Counseling Psychologist · NPI 1922672856

Dr. Stefan Jadaszewski, PHD is a Counseling Psychologist in Waltham, Massachusetts. Registered with an NPI since 2021.

In the registry since
2021
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

763 Main St Apt 10
Waltham, MA 02451-0604
Phone: (603) 834-5313
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Counseling Psychologist (primary) Taxonomy 103TC1900X

Record details

NPI number1922672856
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedMay 15, 2021
Last updated in NPPESMay 15, 2021
Certification dateMay 15, 2021
Mailing address763 Main St Apt 10, Waltham, MA 02451-0604

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