DR. ANDREW ELLEFSON M.D.
NPI 1972796225
Pediatrics in Wilmington, DE
About Dr. Andrew Ellefson M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ANDREW ELLEFSON M.D. (NPI 1972796225) is an individual pediatrics provider in Wilmington, Delaware, licensed in Delaware (C1-0008424) and active in the NPI registry since August 2007. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
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. Andrew Ellefson M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Andrew Ellefson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Wilmington, DE 19803
- Reassigned Medicare billing, Delaware enrollment
- 526 clinicians in this Medicare group
Dover, DE 19904
- Reassigned Medicare billing, Delaware enrollment
- Also billed through NPI 1356808208 (Delaware)
- 163 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
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 Andrew Ellefson's NPI number?
The NPI number for Andrew Ellefson is 1972796225. It was assigned to this individual provider in the NPPES registry on August 21, 2007.
Where is Andrew Ellefson located?
Andrew Ellefson practices at 1600 Rockland Rd, Wilmington, DE 19803. The listed phone number is (302) 651-4200.
What is Andrew Ellefson's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Andrew Ellefson enrolled in Medicare?
Yes. Andrew Ellefson is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Andrew Ellefson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Andrew Ellefson reassigns Medicare benefits to 2 organizations: The Nemours Foundation (Wilmington, DE) and Bayhealth Medical Center, Inc (Dover, DE). Each 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 Andrew Ellefson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Andrew Ellefson accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and AmeriHealth Caritas Next and 1 other insurer list Andrew Ellefson 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 Andrew Ellefson was last updated on August 17, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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. Andrew Ellefson, M.D. · NPI 1972796225
Pediatrics physician in Wilmington, Delaware. Individual provider, active in the CMS NPPES registry since August 21, 2007.
## Identity
- **NPI:** 1972796225 (Entity type: Individual)
- **Enumerated:** August 21, 2007
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** C1-0008424 (Delaware)
- **Sole proprietor:** No
## Practice location
- **Address:** 1600 ROCKLAND RD, Wilmington, DE 19803-3607
- **Phone:** (302) 651-4200 · **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:** 2 organizations under Medicare reassignment (form CMS-855R): The Nemours Foundation (NPI 1366594699, Wilmington, DE); Bayhealth Medical Center, Inc (NPI 1588456479, Dover, DE) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 17, 2014
- **Other identifiers:** Medicare PIN 352713ZAL7 (DE)
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Source: [NPI Profile](https://npiprofile.com/npi/1972796225) · Data from the CMS NPPES public registry.