NPPES file of Aug 9, 2026

Katherine Marie Pfeiffer, CNS, NP

Psychiatric/Mental Health Nurse Practitioner · New Haven, CT

Katherine Marie Pfeiffer, CNS, NP is a psychiatric/mental health nurse practitioner with a practice address in New Haven, Connecticut, and NPI 1356676423, issued on Oct 7, 2009. Check the license (Connecticut 13222, 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
1356676423
Name
Katherine Marie Pfeiffer
Credential
CNS, NP
Primary taxonomy
Psychiatric/Mental Health Nurse Practitioner 363LP0808X
License number
13222 CT
Self-reported in NPPES; status is on the state search
Practice location
437 Orange St, New Haven, CT 06511
Phone
(203) 909-6370
Enumerated
Oct 7, 2009
Record last updated
May 9, 2025
Medicare enrollment
Enrolled (PECOS I20250331000228); may accept Medicare assignment
Telehealth
Offers telehealth (CMS)
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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8 nearest psychiatric/mental health nurse practitioner records → All 1,108 in Connecticut → Look up another NPI →

Also registered at 437 Orange St

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

  1. Goetti Francois, APRNPsychiatric/Mental Health Nurse Practitioner1194493841
  2. Michele Ryan, LCSWClinical Social Worker1417913757
  3. Jonathon Samburg, D.D.S.General Practice Dentistry1093816506

Verify Katherine Marie Pfeiffer 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 13222    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. Integral Health LLCNew Haven, CT

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

Katherine Marie Pfeiffer among 1,108 psychiatric/mental health nurse practitioner records in Connecticut

Katherine Marie Pfeiffer, CNS, NP is one of 1,108 psychiatric/mental health nurse practitioner records with a practice address in Connecticut. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 20% of them.

  • NPI issued2009 · 20% of these records are older, 77% newer
  • In a Medicare fileYes · 70% of these records are
  • In the CMS Doctors and Clinicians fileYes · 51% of these records are
  • Graduated2021 · median 2020 among the 566 with a school on file
  • Record last updated2025 · 38% 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 Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

88 psychiatric/mental health nurse practitioner records list a practice address in New Haven

They are 88 of the 9,793 NPPES records with a practice address in New Haven, and 1,108 psychiatric/mental health nurse practitioner records in Connecticut.

All 1,108 in Connecticut → Every provider in New Haven → Psychiatric/Mental Health Nurse Practitioner nationwide →

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

  1. Andrea Adimando, APRNNew Haven, CT 065111801936448
  2. Meredith Barone, APRNNew Haven, CT 065111669981940
  3. Marissa Bayerl, APRNNew Haven, CT 065111972958429
  4. Jessika Brasseaux, APRN, PMHNP-BCNew Haven, CT 065111346611852
  5. Maura Fischer, APRNNew Haven, CT 065111871738104
  6. Janet Gillis-ToffoloNew Haven, CT 065111972629475
  7. Jin Ju LeeNew Haven, CT 065111649675513
  8. Jodi McLaughlin, APRNNew Haven, CT 065111518197573

Common questions

What is Katherine Marie Pfeiffer, CNS, NP's NPI number?

Katherine Marie Pfeiffer, CNS, NP's National Provider Identifier (NPI) is 1356676423, issued on Oct 7, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Katherine Marie Pfeiffer, CNS, NP located?

The NPPES record lists a practice address at 437 Orange St, New Haven, CT, 06511. Phone: (203) 909-6370. Providers update this record themselves, so call before visiting.

How can I verify Katherine Marie Pfeiffer, CNS, NP's license?

NPPES lists Connecticut license number 13222, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.