Gregory Joseph Gagnon, PHD
Clinical Psychologist · New York, NY
Gregory Joseph Gagnon, PHD is a clinical psychologist with a practice address in New York, New York, and NPI 1710640479, issued on Oct 20, 2021. Check the license (New York 024557, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gregory Joseph Gagnon
- Credential
- PHD
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- 024557 NY
Self-reported in NPPES; status is on the state search - Practice location
- 45 Rivington St FL 2, New York, NY 10002
- Phone
- (332) 243-1810
- Enumerated
- Oct 20, 2021
- Record last updated
- Aug 9, 2024
- Medicare enrollment
- Enrolled (PECOS I20231207001717); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 6,558 in New York → Look up another NPI →
Also registered at 45 Rivington St FL 2
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Xiaoxi Chen, LCSWClinical Social Worker1902619521
Verify Gregory Joseph Gagnon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this profession
Search for license 024557Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Icahn School OF Medicine AT Mount SinaiNew York, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory Joseph Gagnon among 6,558 clinical psychologist records in New York
Gregory Joseph Gagnon, PHD is one of 6,558 clinical psychologist records with a practice address in New York. 7% 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 87% of them.
- NPI issued2021 · 87% of these records are older, 10% newer
- In a Medicare fileYes · 7% of these records are
- In the CMS Doctors and Clinicians fileYes · 19% of these records are
- Graduated2020 · median 1996 among the 1,251 with a school on file
- Record last updated2024 · 73% 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 New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2,542 clinical psychologist records list a practice address in New York
They are 2,542 of the 98,468 NPPES records with a practice address in New York, and 6,558 clinical psychologist records in New York.
All 6,558 in New York → Every provider in New York → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Wendy Barron, PHDNew York, NY 100021245258367
- Laura Chin, PSYDNew York, NY 100021255572582
- Marcia ElliasNew York, NY 100021770529968
- Steven Giles, PH.D.New York, NY 100021336210350
- Hung-Yi Ho, PSYDNew York, NY 100021083945018
- Ka Wai Leung, PSY.D.New York, NY 100021841684537
- Kim Tuyen Nguyen, PSYDNew York, NY 100021508286774
- Joan Roth, PH.D.New York, NY 100021265489611
Common questions
What is Gregory Joseph Gagnon, PHD's NPI number?
Gregory Joseph Gagnon, PHD's National Provider Identifier (NPI) is 1710640479, issued on Oct 20, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Joseph Gagnon, PHD located?
The NPPES record lists a practice address at 45 Rivington St FL 2, New York, NY, 10002. Phone: (332) 243-1810. Providers update this record themselves, so call before visiting.
How can I verify Gregory Joseph Gagnon, PHD's license?
NPPES lists New York license number 024557, as entered by the provider. Search the New York 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.