NPPES file of Aug 9, 2026

Rachel Lauren Duffy, PSYD

Clinical Psychologist · Stamford, CT

Rachel Lauren Duffy, PSYD is a clinical psychologist with a practice address in Stamford, Connecticut, and NPI 1659954949, issued on May 4, 2021. Check the license (Connecticut 4002, as entered in NPPES) with the Connecticut board that licenses this profession; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1659954949
Name
Rachel Lauren Duffy
Credential
PSYD
Primary taxonomy
Clinical Psychologist 103TC0700X
License numbers
4002 CT
023840 NY
Self-reported in NPPES; status is on the state search
Practice location
230 High Ridge RD, Stamford, CT 06905
Phone
(703) 336-7831
Enumerated
May 4, 2021
Record last updated
May 4, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20250331000219); may accept Medicare assignment
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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Verify Rachel Lauren Duffy in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Connecticut board licenses this profession
    Search for license 4002
    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 Connecticut license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Psychological Health And Development Associates LLCWethersfield, CT

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Rachel Lauren Duffy among 1,114 clinical psychologist records in Connecticut

Rachel Lauren Duffy, PSYD is one of 1,114 clinical psychologist records with a practice address in Connecticut. 14% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 89% of them.

  • NPI issued2021 · 89% of these records are older, 7% newer
  • In a Medicare fileYes · 14% of these records are
  • In the CMS Doctors and Clinicians fileYes · 26% of these records are
  • Graduated2019 · median 2000 among the 294 with a school on file
  • Record last updated2021 · 72% 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 Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

36 clinical psychologist records list a practice address in Stamford

They are 36 of the 2,774 NPPES records with a practice address in Stamford, and 1,114 clinical psychologist records in Connecticut.

The 8 clinical psychologist records with the nearest ZIP codes

  1. Karen Alter-Reid, PH.D.Stamford, CT 069051871774471
  2. John Brundage, PH.D.Stamford, CT 069051417040908
  3. Keara Conway, PSY.D.Stamford, CT 069051790038206
  4. Andrew Grunebaum, PH.D.Stamford, CT 069051386782290
  5. David Israel, PSY.D.Stamford, CT 069051174674519
  6. Emily Krol, PSYDStamford, CT 069051932500915
  7. Ronald Naso, PH.D.Stamford, CT 069051750466074
  8. Mark Ostrowski, PSY.D.Stamford, CT 069051700022324

Common questions

What is Rachel Lauren Duffy, PSYD's NPI number?

Rachel Lauren Duffy, PSYD's National Provider Identifier (NPI) is 1659954949, issued on May 4, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Rachel Lauren Duffy, PSYD located?

The NPPES record lists a practice address at 230 High Ridge RD, Stamford, CT, 06905. Phone: (703) 336-7831. Providers update this record themselves, so call before visiting.

How can I verify Rachel Lauren Duffy, PSYD's license?

NPPES lists Connecticut license number 4002, as entered by the provider. Search the Connecticut 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. Medicare files from data.cms.gov. 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.