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

Dr. John Nicholas Petrou, PHD

Individual provider Clinical Psychologist · NPI 1497244982

Dr. John Nicholas Petrou, PHD is a Clinical Psychologist in Quincy, Massachusetts. Licensed in Massachusetts. Registered with an NPI since 2018.

Licensed in
MA
In the registry since
2018
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

1 Dennis Ryan Pkwy
Quincy, MA 02169-5348
Phone: (617) 984-4282
Fax: (617) 472-9370
Show map & directions

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

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence 6480 (MA)

Record details

NPI number1497244982
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedMay 9, 2018
Last updated in NPPESMay 9, 2018

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