NPPES file of Aug 9, 2026

Isaac Greenberg, PH.D.

Clinical Psychologist · Arlington, MA

Isaac Greenberg, PH.D. is a clinical psychologist with a practice address in Arlington, Massachusetts, and NPI 1558366690, issued on Jun 16, 2005. Check the license (Massachusetts PY1628-PR, as entered in NPPES) with the Massachusetts board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1558366690
Name
Isaac Greenberg
Credential
PH.D.
Primary taxonomy
Clinical Psychologist 103TC0700X
License number
PY1628-PR MA
Self-reported in NPPES; status is on the state search
Practice location
94 Pleasant St, Arlington, MA 02476
Phone
(781) 862-9173
Enumerated
Jun 16, 2005
Record last updated
Jul 13, 2026
Medicaid ID
0504106 MA
Medicare enrollment
Enrolled (PECOS I20080523000216); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest clinical psychologist records → All 3,185 in Massachusetts → Look up another NPI →

Also registered at 94 Pleasant St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Deborah Armstrong, LICSWClinical Social Worker1467432641
  2. Faith Benton, PH.D.Clinical Psychologist1356315816
  3. Andrew Bush, M.D.Psychiatry Physician1720138845
  4. Mary Byrne, PHD, LICSWClinical Social Worker1780724377
  5. Christie Carlson, LICSWClinical Social Worker1649307968
  6. Ronna Casper, LICSWClinical Social Worker1093859324

Verify Isaac Greenberg in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
    Search for license PY1628-PR    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Massachusetts license search

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Isaac Greenberg among 3,185 clinical psychologist records in Massachusetts

Isaac Greenberg, PH.D. is one of 3,185 clinical psychologist records with a practice address in Massachusetts. 12% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 98% newer
  • In a Medicare fileNo · 12% of these records are
  • In the CMS Doctors and Clinicians fileYes · 24% of these records are
  • Graduated1972 · median 2000 among the 777 with a school on file
  • Record last updated2026 · 71% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103TC0700X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

72 clinical psychologist records list a practice address in Arlington

They are 72 of the 974 NPPES records with a practice address in Arlington, and 3,185 clinical psychologist records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 3,185 in Massachusetts → Every provider in Arlington → Clinical Psychologist nationwide →

The 8 clinical psychologist records with the nearest ZIP codes

  1. Faith Benton, PH.D.Arlington, MA 024761356315816
  2. Esme Blackburn, PH.D.Arlington, MA 024761427041144
  3. Robert Cummins, PH.D.Arlington, MA 024761720047715
  4. Neil Devins, PH.D/Arlington, MA 024761972562379
  5. Christopher Germer, PH.D.Arlington, MA 024761144212960
  6. Christopher Huvos, PSY.D.Arlington, MA 024761508865916
  7. Sharon Jacques, PH.D.Arlington, MA 024761447219407
  8. Virginia McCrae, PSY.D.Arlington, MA 024761255390647

Common questions

What is Isaac Greenberg, PH.D.'s NPI number?

Isaac Greenberg, PH.D.'s National Provider Identifier (NPI) is 1558366690, issued on Jun 16, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Isaac Greenberg, PH.D. located?

The NPPES record lists a practice address at 94 Pleasant St, Arlington, MA, 02476. Phone: (781) 862-9173. Providers update this record themselves, so call before visiting.

How can I verify Isaac Greenberg, PH.D.'s license?

NPPES lists Massachusetts license number PY1628-PR, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.