DR. JOHN M. LOISELLE MD
NPI 1619069598
Emergency Medicine - Pediatric Emergency Medicine in Wilmington, DE
About Dr. John M. Loiselle Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN M. LOISELLE MD (NPI 1619069598) is an individual pediatric emergency medicine provider in Wilmington, Delaware, licensed in Delaware (C10005581) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 10
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. John M. Loiselle Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show John Loiselle 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 John Loiselle's NPI number?
The NPI number for John Loiselle is 1619069598. It was assigned to this individual provider in the NPPES registry on September 29, 2006.
Where is John Loiselle located?
John Loiselle practices at A.I. Dupont Hospital For Children 1600 Rockland Road, Wilmington, DE 19803. The listed phone number is (302) 651-4000.
What is John Loiselle's specialty?
The primary specialty registered for this NPI is Emergency Medicine, specializing in Pediatric Emergency Medicine, with taxonomy code 207PP0204X.
Is John Loiselle enrolled in Medicare?
Yes. John Loiselle is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for John Loiselle's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Loiselle 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 John Loiselle'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 John Loiselle was last updated on September 29, 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. John M. Loiselle, MD · NPI 1619069598
Pediatric Emergency Medicine physician in Wilmington, Delaware. Individual provider, active in the CMS NPPES registry since September 29, 2006.
## Identity
- **NPI:** 1619069598 (Entity type: Individual)
- **Enumerated:** September 29, 2006
- **Primary specialty:** Emergency Medicine - Pediatric Emergency Medicine · taxonomy 207PP0204X
- **State license:** C10005581 (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 29, 2011
- **Other identifiers:** Medicaid 5319307 (NJ); Medicaid 1372256 (NY); Medicaid 10105358 (VA); and 7 more
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Source: [NPI Profile](https://npiprofile.com/npi/1619069598) · Data from the CMS NPPES public registry.