Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Mrs. Christine Erin O'Connor, NP

Individual provider Critical Care Medicine Registered Nurse · NPI 1164765921

Mrs. Christine Erin O'Connor, NP is a Nurse Practitioner in Norwalk, Connecticut. Qualified in 2015, 11 years ago. Practices with MSK Nassau, a 98-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Connecticut and New York.

Years since qualifying
11
Licensed in
CT, NY
In the registry since
2013
Specialties on file
3
What do these letters mean?
NP — Nurse Practitioner
An advanced practice nurse who can diagnose, treat and in most states prescribe.

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Practice location Address checks out

34 Maple St
Norwalk, CT 06850-3815
Phone: (203) 852-2000
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Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 240 E 38th St Fl 19, New York, NY 10016-2708 — (516) 884-8906
  • 240 E 38th St Fl 19, New York, NY 10016-2708 — (516) 884-8906
  • 1275 York Ave, New York, NY 10065 — (212) 639-2000

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 10409 (CT)
Critical Care Medicine Registered Nurse Taxonomy 163WC0200X · Licence 631315 (NY)
Family Nurse Practitioner Taxonomy 363LF0000X · Licence 339489 (NY)

Record details

NPI number1164765921
Entity typeIndividual (Type 1)
GenderFemale
Credentials NP
Sole proprietorYes
NPI enumeratedMarch 30, 2013
Last updated in NPPESMay 20, 2022
Certification dateMay 20, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2015 (11 years in practice)
Group practice Msk Nassau — 98 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients85
Services billed 192 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $1,315 57 payments · a meal or drink at a meeting or visit, not a fee
Travel and Lodging $830 2 payments · travel or lodging paid or reimbursed, such as to attend a conference
Consulting Fee $731 1 payment

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Norwalk Hospital Hospital · Norwalk, CT

Also affiliated with 1 hospital, which CMS identifies by certification number only.

Colleagues at MSK Nassau

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 98 clinicians in the practice; 12 are shown here.

Other providers in Norwalk