NPPES file of Aug 9, 2026

Sophia Montissol, RN

Psychiatric/Mental Health Nurse Practitioner · Cambridge, MA

Sophia Montissol, RN is a psychiatric/mental health nurse practitioner with a practice address in Cambridge, Massachusetts, and NPI 1821596149, issued on Feb 1, 2018. Check the license (Massachusetts 2305589, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1821596149
Name
Sophia Montissol
Credential
RN
Primary taxonomy
Psychiatric/Mental Health Nurse Practitioner 363LP0808X
License number
2305589 MA
Self-reported in NPPES; status is on the state search
Practice location
625 Mount Auburn St, Cambridge, MA 02138
Phone
(617) 223-7183
Enumerated
Feb 1, 2018
Record last updated
Jul 28, 2026
Medicare enrollment
Enrolled (PECOS I20191023000188); accepts 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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Also registered at 625 Mount Auburn St

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

  1. Nathalie Bloch, MDInternal Medicine Physician1730372103
  2. Claire Brickell, MDPsychiatry Physician1568621183
  3. Marybeth Ferrante, MDInternal Medicine Physician1194795781
  4. Mark Friedman, MDInternal Medicine Physician1760482921
  5. Joshua Hatcher-Mullins, NPPsychiatric/Mental Health Nurse Practitioner1407398142
  6. Mackenzie JordanClinical Psychologist1366089278

Verify Sophia Montissol 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 2305589
    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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38% more Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024

1,247 Medicare Part D claims for 118 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D. 91 claims were for opioids.

  1. Sophia Montissol1,247
  2. Specialty average906

Most prescribed

  1. Mirtazapine72 claims
  2. Eliquis64 claims
  3. Furosemide60 claims
  4. Trazodone Hcl50 claims
  5. Divalproex Sodium47 claims
  6. Tramadol Hcl45 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $26.48

1 payment: food and beverage; the largest payer was Neurocrine Biosciences, Inc. The 23,362 providers of this specialty with any payment received $1,027.77 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Sophia Montissol$26.48
  2. Specialty average$1,027.77

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Mount Auburn Professional Services IncCambridge, MA

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

Sophia Montissol among 2,169 psychiatric/mental health nurse practitioner records in Massachusetts

Sophia Montissol, RN is one of 2,169 psychiatric/mental health nurse practitioner records with a practice address in Massachusetts. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 35% of them.

  • NPI issued2018 · 35% of these records are older, 61% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated2018 · median 2021 among the 1,309 with a school on file
  • Record last updated2026 · 23% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Psychiatric/Mental Health Nurse Practitioner providers in Massachusetts

There are 2,169 psychiatric/mental health nurse practitioner records in Massachusetts.

The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes

  1. Julie Dunne, PMHNP-BCCambridge, MA 021381023426640
  2. Joshua Hatcher-Mullins, NPCambridge, MA 021381407398142
  3. Margaret Howes, FPMHNPCambridge, MA 021381245462191
  4. David Johnson, RN/NPCambridge, MA 021381821373671
  5. Kathryn Kahn, RN/NPCambridge, MA 021381821347865
  6. Katherine LeeCambridge, MA 021381699318931
  7. Colleen Madden, NPCambridge, MA 021381497005797
  8. Rebecca McCloskey, MSN, RN, PMHNP-BCCambridge, MA 021381689127631

Common questions

What is Sophia Montissol, RN's NPI number?

Sophia Montissol, RN's National Provider Identifier (NPI) is 1821596149, issued on Feb 1, 2018. An NPI identifies a provider in billing; it is not a license.

Where is Sophia Montissol, RN located?

The NPPES record lists a practice address at 625 Mount Auburn St, Cambridge, MA, 02138. Phone: (617) 223-7183. Providers update this record themselves, so call before visiting.

How can I verify Sophia Montissol, RN's license?

NPPES lists Massachusetts license number 2305589, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.

How much does Sophia Montissol, RN prescribe under Medicare Part D?

In 2024, Sophia Montissol, RN had 1,247 Medicare Part D claims for 118 beneficiaries; the average among psychiatric/mental health nurse practitioner prescribers was 906. Part D covers Medicare prescriptions 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.