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

Dr. John Martin, PHD

Individual provider Psychologist · NPI 1417921271

Dr. John Martin, PHD is a Psychologist in Naperville, Illinois. Licensed in Illinois. Registered with an NPI since 2006.

Licensed in
IL
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 →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

29 S Webster St Ste 220
Naperville, IL 60540-5356
Phone: (630) 355-9933
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X (IL)

Record details

NPI number1417921271
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedFebruary 16, 2006
Last updated in NPPESJuly 13, 2026
Mailing address29 S Webster St, Suite 220, Naperville, IL 60540-5356

Other providers in Naperville