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

Dr. Isaac Greenberg, PHD

Individual provider Clinical Psychologist · NPI 1558366690

Dr. Isaac Greenberg, PHD is a Clinical Psychologist in Arlington, Massachusetts. Qualified in 1972, 54 years ago. Accepts Medicare assignment and offers telehealth. Licensed in Massachusetts.

Years since qualifying
54
Licensed in
MA
In the registry since
2005
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

94 Pleasant St
Arlington, MA 02476-6535
Phone: (781) 862-9173
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence PY1628-PR (MA)

Record details

NPI number1558366690
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedJune 16, 2005
Last updated in NPPESJuly 13, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 1972 (54 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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