Irene Merwin, PSY.D.
Clinical Psychologist · Cambridge, MA
Irene Merwin, PSY.D. is a clinical psychologist with a practice address in Cambridge, Massachusetts, and NPI 1902944531, issued on Feb 3, 2007. Check the license (Massachusetts 3622, 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.
- Name
- Irene Merwin
- Credential
- PSY.D.
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- 3622 MA
Self-reported in NPPES; status is on the state search - Practice location
- 240 Concord Ave, Cambridge, MA 02138
- Phone
- (617) 731-9096
- Enumerated
- Feb 3, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 3,185 in Massachusetts → Look up another NPI →
Also registered at 240 Concord Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Irene Merwin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 3622Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Irene Merwin among 3,185 clinical psychologist records in Massachusetts
Irene Merwin, PSY.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 2007, is newer than 30% of them.
- NPI issued2007 · 30% of these records are older, 50% newer
- In a Medicare fileNo · 12% of these records are
- In the CMS Doctors and Clinicians fileNo · 24% of these records are
- Record last updated2007 · 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).
267 clinical psychologist records list a practice address in Cambridge
They are 267 of the 5,145 NPPES records with a practice address in Cambridge, 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 Cambridge → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Catherin Bohn, PSY.D.Cambridge, MA 021381396782546
- Matthew Jerram, PH.D.Cambridge, MA 021381871549980
- Lawrence Kron, PH.D.Cambridge, MA 021381497793111
- Judith Krulewitz, PH.D.Cambridge, MA 021381760473441
- Judith Livingston, PHDCambridge, MA 021381407846041
- Jason Mihalko, PSY.D.Cambridge, MA 021381811936180
- Ariel Phillips, ED.D.Cambridge, MA 021381154383057
- Carolyn Rieder, PH.D.Cambridge, MA 021381124074224
Common questions
What is Irene Merwin, PSY.D.'s NPI number?
Irene Merwin, PSY.D.'s National Provider Identifier (NPI) is 1902944531, issued on Feb 3, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Irene Merwin, PSY.D. located?
The NPPES record lists a practice address at 240 Concord Ave, Cambridge, MA, 02138. Phone: (617) 731-9096. Providers update this record themselves, so call before visiting.
How can I verify Irene Merwin, PSY.D.'s license?
NPPES lists Massachusetts license number 3622, 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.
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.