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

Matthew J Koterwas, FNP

Individual provider Family Nurse Practitioner · NPI 1376070854

Matthew J Koterwas, FNP is a Nurse Practitioner in New Castle, Delaware. Qualified in 2016, 10 years ago. Practices with Christiana Care Health Services Inc, a 1,481-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Delaware.

Years since qualifying
10
Licensed in
DE
In the registry since
2017
What do these letters mean?
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.

See every abbreviation used in this directory →

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Practice location Address checks out

239 Christiana Rd
New Castle, DE 19720-2907
Phone: (302) 327-7630
Fax: (302) 327-7635
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence LG-0001026 (DE)

Record details

NPI number1376070854
Entity typeIndividual (Type 1)
GenderMale
Credentials FNP
Sole proprietorNo
NPI enumeratedMay 16, 2017
Last updated in NPPESOctober 25, 2017

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2016 (10 years in practice)
Group practice Christiana Care Health Services Inc — 1481 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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 patients343
Services billed 681 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

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 $18 1 payment · a meal or drink at a meeting or visit, not a fee

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. Those with a page here are linked.

  • Christiana Hospital Hospital · Newark, DE · listed as Christiana Care Hospital
  • Christianacare Homehealth Home health agency · Wilmington, DE

Colleagues at Christiana Care Health Services Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1481 clinicians in the practice; 12 are shown here.

Other providers in New Castle