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KATHERINE MARIE PFEIFFER CNS, NP
NPI 1356676423
Nurse Practitioner - Psychiatric/Mental Health in New Haven, CT

Active since October 07, 2009PECOS Enrolled
437 ORANGE ST, NEW HAVEN, CT 06511(203) 909-6370 Get Directions Write a Review

NPPES record last updated: August 11, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 11, 2026, May 9, 2025, Oct 25, 2022 (3 updates tracked since 2022).

About Katherine Marie Pfeiffer Cns, Np NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

KATHERINE MARIE PFEIFFER CNS, NP (NPI 1356676423) is an individual psychiatric/mental health provider in New Haven, Connecticut, licensed in Connecticut (13222) and active in the NPI registry since October 2009. She is enrolled in Medicare PECOS and is a graduate of Other (2021).

NPPES Registry Identity

NPI1356676423
Entity TypeIndividualFemale
Primary Taxonomy363LP0808X
Provider Legal NameKATHERINE MARIE PFEIFFERCredential: CNS, NP
Location Address437 ORANGE STNew Haven, CT 06511-6205
Mailing Address437 Orange StNew Haven, CT 06511-6205 · (203) 909-6370 · Fax (203) 909-6374
Phone(203) 909-6370
Sole ProprietorNo
Medical School CMSOtherGraduated 2021
Enumeration DateOctober 7, 2009
Last NPPES UpdateAugust 11, 20263 updates tracked since enumeration
NPPES CertifiedAugust 11, 2026
✔ NPI 1356676423 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
License✔ Licensed in CT · 13222
Also ListedClinical Nurse Specialist · Psychiatric/Mental Health, AdultTaxonomy 364SP0809X · License 13222 (CT)
437 ORANGE ST, New Haven, CT 06511
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Katherine Marie Pfeiffer Cns, Np is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID1850439829
PECOS Enrollment IDI20250331000228
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Katherine Pfeiffer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Integral Health, LLC
Same address
Psychiatry
437 ORANGE STREET
New Haven, CT 06511
  • Reassigned Medicare billing, Connecticut enrollment
  • 6 clinicians in this Medicare group
NPI 1427227321 (203) 909-6370

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06511 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$93.86 typical visit price
range $60.82 – $183.10
Typical copayment $23.46 (range $15.20 – $45.77)
Most-billed visit code 99203
Established Patient
$106.68 typical visit price
range $19.76 – $149.26
Typical copayment $26.67 (range $4.94 – $37.31)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 5

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. JONATHON LEE SAMBURG D.D.S.
Dentist (General Practice)
437 ORANGE ST
NEW HAVEN, CT 06511
South Central Connecticut Planning Region (203) 865-4843
GOETTI FRANCOIS APRN
Nurse Practitioner (Psychiatric/Mental Health)
437 ORANGE ST
NEW HAVEN, CT 06511
South Central Connecticut Planning Region (203) 543-8413
MICHELE DEVEREUX RYAN LCSW
Social Worker (Clinical)
437 ORANGE ST
NEW HAVEN, CT 06511
South Central Connecticut Planning Region (203) 215-0795
CATHERINE H FRANKEL LCSW
Social Worker (Clinical)
437 ORANGE ST
NEW HAVEN, CT 06511
South Central Connecticut Planning Region (203) 909-6370
DR. AMY LAURA CATALANO PSY D
Psychologist (Clinical)
437 ORANGE ST
NEW HAVEN, CT 06511
South Central Connecticut Planning Region (203) 909-6370

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Katherine Pfeiffer's NPI number?

The NPI number for Katherine Pfeiffer is 1356676423. It was assigned to this individual provider in the NPPES registry on October 7, 2009.

Where is Katherine Pfeiffer located?

Katherine Pfeiffer practices at 437 Orange St, New Haven, CT 06511. The listed phone number is (203) 909-6370.

What is Katherine Pfeiffer's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Is Katherine Pfeiffer enrolled in Medicare?

Yes. Katherine Pfeiffer is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Katherine Pfeiffer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Katherine Pfeiffer reassigns Medicare benefits to Integral Health, LLC (New Haven, CT). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Katherine Pfeiffer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Katherine Pfeiffer was last updated on August 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.