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

Dr. William Derry Heasley, PSYD

Individual provider Clinical Psychologist · NPI 1588728513

Dr. William Derry Heasley, PSYD is a Clinical Psychologist in Gloucester, Massachusetts. Practices as a sole proprietor. Licensed in Massachusetts.

Licensed in
MA
In the registry since
2006
What do these letters mean?
PSYD — Doctor of Psychology
A doctoral psychologist trained primarily for clinical practice.

See every abbreviation used in this directory →

Practice location Address checks out

85 Eastern Ave Ste 108
Gloucester, MA 01930-1869
Phone: (978) 282-8281
Fax: (978) 282-1143
Show map & directions

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

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence 7033 (MA)

Record details

NPI number1588728513
Entity typeIndividual (Type 1)
GenderMale
Credentials PSYD
Sole proprietorYes
NPI enumeratedDecember 21, 2006
Last updated in NPPESJune 20, 2013
Mailing address85 Eastern Ave, Suite 108, Gloucester, MA 01930-1869

Other providers in Gloucester