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

Dr. Mark Robert Steward, PHD

Individual provider Adult Development & Aging Psychologist · NPI 1821152828

Dr. Mark Robert Steward, PHD is an Adult Development & Aging Psychologist in Newton Centre, Massachusetts. Practices as a sole proprietor. Licensed in Massachusetts.

Licensed in
MA
In the registry since
2006
Specialties on file
7
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

53 Langley Rd Ste 340D
Newton Centre, MA 02459-1913
Phone: (617) 484-7604
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Adult Development & Aging Psychologist (primary) Taxonomy 103TA0700X · Licence 4784 (MA)
Clinical Psychologist Taxonomy 103TC0700X · Licence 4784 (MA)
Clinical Child & Adolescent Psychologist Taxonomy 103TC2200X · Licence 4784 (MA)
Psychologist Taxonomy 103T00000X · Licence 4784 (MA)
Family Psychologist Taxonomy 103TF0000X · Licence 4784 (MA)
Group Psychotherapy Psychologist Taxonomy 103TP2701X · Licence 4784 (MA)
School Psychologist Taxonomy 103TS0200X · Licence 4784 (MA)

Record details

NPI number1821152828
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedDecember 21, 2006
Last updated in NPPESSeptember 11, 2025
Mailing address17 Edgemoor Rd, Belmont, MA 02478-3916