DR. MARY C. THEROUX MD
NPI 1750441853
Anesthesiology - Pediatric Anesthesiology in Wilmington, DE
About Dr. Mary C. Theroux Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARY C. THEROUX MD (NPI 1750441853) is an individual pediatric anesthesiology provider in Wilmington, Delaware, licensed in Delaware (C10003285) and active in the NPI registry since December 2006. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 9
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Mary C. Theroux Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Mary Theroux reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Wilmington, DE 19803
- Reassigned Medicare billing, Delaware enrollment
- 526 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 19803 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
WILMINGTON, DE 19803
WILMINGTON, DE 19803
WILMINGTON, DE 19803
WILMINGTON, DE 19803
WILMINGTON, DE 19803
WILMINGTON, DE 19803
WILMINGTON, DE 19803
WILMINGTON, DE 19803
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 Theroux's NPI number?
The NPI number for Mary Theroux is 1750441853. It was assigned to this individual provider in the NPPES registry on December 11, 2006.
Where is Mary Theroux located?
Mary Theroux practices at A.I. Dupont Hospital For Children 1600 Rockland Road, Wilmington, DE 19803. The listed phone number is (302) 651-4000.
What is Mary Theroux's specialty?
The primary specialty registered for this NPI is Anesthesiology, specializing in Pediatric Anesthesiology, with taxonomy code 207LP3000X.
Is Mary Theroux enrolled in Medicare?
Yes. Mary Theroux is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Mary Theroux's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Theroux reassigns Medicare benefits to The Nemours Foundation (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 Theroux's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Theroux accept?
Health plans from Oscar Health list Mary Theroux as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Mary Theroux was last updated on September 3, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 years 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.
# Dr. Mary C. Theroux, MD · NPI 1750441853
Pediatric Anesthesiology physician in Wilmington, Delaware. Individual provider, active in the CMS NPPES registry since December 11, 2006.
## Identity
- **NPI:** 1750441853 (Entity type: Individual)
- **Enumerated:** December 11, 2006
- **Primary specialty:** Anesthesiology - Pediatric Anesthesiology · taxonomy 207LP3000X
- **State license:** C10003285 (Delaware)
- **Sole proprietor:** No
## Practice location
- **Address:** A.I. DUPONT HOSPITAL FOR CHILDREN, 1600 ROCKLAND ROAD, Wilmington, DE 19803-3607
- **Phone:** (302) 651-4000 · **Fax:** (302) 651-4945
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** The Nemours Foundation (NPI 1366594699, Wilmington, DE), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 3, 2011
- **Other identifiers:** Medicaid 001217513 (PA); Medicaid Q03285 (SC); Medicare UPIN F49278; and 6 more
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Source: [NPI Profile](https://npiprofile.com/npi/1750441853) · Data from the CMS NPPES public registry.