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

Dr. Matthew Stephen Day, PHD

Individual provider Mental Health Counselor · NPI 1134325038

Dr. Matthew Stephen Day, PHD is a Mental Health Counselor in Brooklyn, New York. Practices as a sole proprietor. Licensed in New York.

Licensed in
NY
In the registry since
2007
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

33 Saint Johns Pl Unit 1
Brooklyn, NY 11217-3205
Phone: (917) 399-9263
Fax: (718) 997-5248
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

Mental Health Counselor (primary) Taxonomy 101YM0800X · Licence 003176 (NY)

Record details

NPI number1134325038
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedJune 26, 2007
Last updated in NPPESJuly 8, 2007

Other providers in Brooklyn