Elizabeth Mainzer Gagnon, PHD
Clinical Psychologist · Boston, MA
Elizabeth Mainzer Gagnon, PHD is a clinical psychologist with a practice address in Boston, Massachusetts, and NPI 1558414060, issued on Jan 19, 2007. Check the license (Massachusetts 8186, 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
- Elizabeth Mainzer Gagnon
- Credential
- PHD
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- 8186 MA
Self-reported in NPPES; status is on the state search - Practice location
- 77 Franklin St, Boston, MA 02110
- Phone
- (617) 451-0055
- Enumerated
- Jan 19, 2007
- Record last updated
- Sep 22, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (617) 451-0055
- Medicare enrollment
- Enrolled (PECOS I20040624000603); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 3,185 in Massachusetts → Look up another NPI →
Also registered at 77 Franklin St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Elizabeth Mainzer Gagnon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 8186Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Elizabeth Mainzer Gagnon among 3,185 clinical psychologist records in Massachusetts
Elizabeth Mainzer Gagnon, PHD 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 fileYes · 24% of these records are
- Graduated2002 · median 2000 among the 777 with a school on file
- Record last updated2016 · 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).
509 clinical psychologist records list a practice address in Boston
They are 509 of the 41,865 NPPES records with a practice address in Boston, 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 Boston → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Mary Anderson, PH.DBoston, MA 021101982853370
- Bonnie Andrews, MPH, PHDBoston, MA 021101134740954
- Patricia Arroyo, PH.D.Boston, MA 021101518014521
- Kajal Bhatt, PSY.D.Boston, MA 021101174011837
- Julie Cohen, PHDBoston, MA 021101730483157
- Laura Fasciano, PSYDBoston, MA 021101952798324
- Gabrielle Liverant, PH.D.Boston, MA 021101912197211
- Samantha Moshier, PHDBoston, MA 021101528555935
Common questions
What is Elizabeth Mainzer Gagnon, PHD's NPI number?
Elizabeth Mainzer Gagnon, PHD's National Provider Identifier (NPI) is 1558414060, issued on Jan 19, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Elizabeth Mainzer Gagnon, PHD located?
The NPPES record lists a practice address at 77 Franklin St, Boston, MA, 02110. Phone: (617) 451-0055. Providers update this record themselves, so call before visiting.
How can I verify Elizabeth Mainzer Gagnon, PHD's license?
NPPES lists Massachusetts license number 8186, 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.