MARY KATHERINE TROYER RN
NPI 1033064043
Registered Nurse - Critical Care Medicine in Dover, DE
About Mary Katherine Troyer Rn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY KATHERINE TROYER RN (NPI 1033064043) is an individual critical care medicine provider in Dover, Delaware, licensed in Delaware (L1-0052381) and active in the NPI registry since March 2026. She is a graduate of Other (2026).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mary Katherine Troyer Rn is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Mary Troyer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Wilmington, DE 19805
- Reassigned Medicare billing, Delaware enrollment
- 178 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Mary Troyer's NPI number?
The NPI number for Mary Troyer is 1033064043. It was assigned to this individual provider in the NPPES registry on March 4, 2026.
Where is Mary Troyer located?
Mary Troyer practices at 640 S State St, Dover, DE 19901. The listed phone number is (302) 674-4700.
What is Mary Troyer's specialty?
The primary specialty registered for this NPI is Registered Nurse, specializing in Critical Care Medicine, with taxonomy code 163WC0200X.
Is Mary Troyer enrolled in Medicare?
Yes. Mary Troyer is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Mary Troyer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Troyer reassigns Medicare benefits to Northstar Anesthesia Of Delaware, LLC (Wilmington, DE). 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 Mary Troyer'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 Mary Troyer was last updated on March 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Mary Katherine Troyer, RN · NPI 1033064043
Critical Care Medicine provider in Dover, Delaware. Individual provider, active in the CMS NPPES registry since March 4, 2026.
## Identity
- **NPI:** 1033064043 (Entity type: Individual)
- **Enumerated:** March 4, 2026
- **Primary specialty:** Registered Nurse - Critical Care Medicine · taxonomy 163WC0200X
- **State license:** L1-0052381 (Delaware)
- **Sole proprietor:** No
## Practice location
- **Address:** 640 S STATE ST, Dover, DE 19901-3530
- **Phone:** (302) 674-4700
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Bills Medicare through:** Northstar Anesthesia Of Delaware, LLC (NPI 1316544976, Wilmington, DE), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2026
## Record status
- **NPPES last updated:** March 4, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1033064043) · Data from the CMS NPPES public registry.